Hazard Plain Preview: automated baseline

LaSalle Parish, LA

Risk-assessment baseline packet

Unit
County area 22059
Release
2026-10
As of
2026-09-28
Storm Events data through
2026-06-30

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

A starting point for the plan's risk assessment (FEMA Local Mitigation Plan Review Tool, Element B). It does not replace local data or FEMA review. Section headings say which FEMA review item each table supports; whether an item is satisfied is decided by the plan and its reviewers.

Hazard Plain release 2026-10, as of 2026-09-28. Independent product; not a FEMA document.

Plan clock

Status
Approved, expires 2026-11-17
Plan
LaSalle Parish (FEMA plan 107665)
Approved
2021-11-18
Expires
2026-11-17
As of
2026-09-28
Days
50 days to expiry
Update underway
FEMA tracker shows a plan in review

What changed since your last plan (approved 2021-11-18)

New federal declarations
EM-3614-LA, EM-3638-LA (2 declaration rows; 2 counted incidents)
Storm Events records since approval
107 (data through 2026-06-30)
Repetitive loss now
FMA RL 15, SRL 29 (44 CFR 77.2); any definition: 68
Repeat-flood change
First release: no prior release to compare.

Sources

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)

Plan status for every jurisdiction listed in this county

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
LaSalle ParishCountyApproved, expires 2026-11-17LaSalle Parish (FEMA plan 107665)2021-11-182026-11-1750FEMA tracker shows a plan in review
Jena townTownApproved, expires 2026-11-17LaSalle Parish (FEMA plan 107665)2021-11-182026-11-1750FEMA tracker shows a plan in review
Olla townTownApproved, expires 2026-11-17LaSalle Parish (FEMA plan 107665)2021-11-182026-11-1750FEMA tracker shows a plan in review
Tullos townTownApproved, expires 2026-11-17LaSalle Parish (FEMA plan 107665)2021-11-182026-11-1750FEMA tracker shows a plan in review
Urania townTownApproved, expires 2026-11-17LaSalle Parish (FEMA plan 107665)2021-11-182026-11-1750FEMA tracker shows a plan in review

Plan 107665 also covers 1 other participant not listed on this page: Jena Band of Choctaw Indians.

Source

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

State plan status and tribal plans in this state: see the state page.

Supports B1-a: hazards

Hazards NRI does not cover: check locally

  • dam failure (incl. upstream dams)
  • levee failure
  • flash flood as its own subtype
  • ice jams
  • debris flows
  • erosion (riverine and coastal)
  • land subsidence and sinkholes
  • expansive soils

The 18 National Risk Index hazards, ranked by expected annual loss (EAL)

Rank by EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearEAL population equivalencestatistical value of life and injury, $13.7M per life, not property damageEAL total (see note)modeled dollars per yearStorm Events records since 1996countEvidence for an omissionNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1Inland FloodingVery LowVery Low$2,563,698$5,868$8,931$2,578,49735
2Heat WaveRelatively LowRelatively Low$39$12$618,733$618,78585
3TornadoRelatively LowRelatively Low$284,495$85$214,569$499,14918
4HurricaneRelatively LowRelatively Low$317,362$3,880$12,511$333,7527
5Strong WindRelatively LowRelatively Low$103,496$1,782$201,272$306,54988Includes 1 High Wind record and 2 Strong Wind records, event types the NRI definition of this hazard leaves out.
6Cold WaveVery LowRelatively Low$3,802$930$242,843$247,5746
7LightningRelatively LowRelatively Low$4,932$111,304$116,2361
8EarthquakeVery LowVery Low$75,266$33,768$109,034Not in Storm Events. Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
9HailVery LowVery Low$59,411$319$4,595$64,32548
10Ice StormRelatively LowRelatively Low$29,659$31,182$60,8422
11DroughtRelatively LowRelatively Low$31,051$31,05141
12Winter WeatherVery LowVery Low$8,418$5$914$9,33721
13WildfireVery LowVery Low$5,231$2$1,833$7,0660No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
14LandslideVery LowVery Low$183$34$2170No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
AvalancheNot ApplicableNot Applicable0NRI rates avalanche Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30).
Coastal FloodingNot ApplicableNot Applicable0NRI rates coastal flooding Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30).
TsunamiNot ApplicableNot Applicable0NRI rates tsunami Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
Volcanic ActivityNot ApplicableNot Applicable0NRI rates volcanic activity Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.

Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Check your state hazard mitigation plan's hazard list for this county; explain any hazard you drop.

Supports B1-b: location

Where each hazard occurs

HazardLocationCensus tracts ratedrated of all tracts
AvalancheCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 3
Coastal FloodingCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 3
Cold WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
DroughtAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.2 of 3
EarthquakeCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.3 of 3
HailAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
Heat WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
HurricaneCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.3 of 3
Ice StormAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
Inland FloodingThe FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.3 of 3
LandslideCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.3 of 3
LightningAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
Strong WindAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3
TornadoCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.3 of 3
TsunamiCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 3
Volcanic ActivityCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 3
WildfireCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.3 of 3
Winter WeatherAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.3 of 3

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

Supports B1-c: extent

Extent: scale, observed range and worst recorded event per hazard

HazardScaleRecordscount, yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to membersNote
Avalanchenone (count and damage)0Physical measure: in event narratives only; local data required.
Coastal Flood, Storm Surge/Tidenone in data (FIRM for depth)0Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill6, 2010 to 2026 (6 zone-level)2 days to 4 days (median 3 days); 6 with a recorded value4 consecutive days, 2026-01-24 to 2026-01-27, zone-levelCold/Wind Chill, 2010-01-07, $75,000 property; $0 crops, reported for the zone (2010 dollars)Zone-level records: applies countywide; national data do not locate these events within the county.Wind chill: in event narratives only; local data required.
Frost/Freeze (outside NRI Cold Wave definition)crop damage0Temperature: in event narratives only; local data required.
DroughtUS Drought Monitor D-scale41, 1998 to 2026 (41 zone-level)35 days to 340 days (median 77 days); 9 with a recorded value340 days (about 11.2 months), 2010-10-01 to 2011-09-05, a run of 12 consecutive Storm Events drought records, zone-levelZone-level records: applies countywide; national data do not locate these events within the county.Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
EarthquakeModified Mercalli (local data)0No Storm Events record; local data required (e.g., USGS).
Hailhail size (inches)63, 1974 to 20260.75 in to 2.75 in (median 1 in); 63 with a recorded value2.75 in hail, 1998-03-07; same size also recorded on 1998-03-07Event records naming member places: Jena town (21 records), Olla town (10 records), Tullos town (4 records), Urania town (3 records).
Excessive Heat, Heatheat index (narratives)85, 2011 to 2025 (85 zone-level)1 day to 94 days (median 5 days); 54 with a recorded value94 days, 2011-06-01 to 2011-09-02, from 4 records, 3 of them monthly summaries (a monthly summary record covers most or all of a month; it does not count days at wave conditions), zone-levelZone-level records: applies countywide; national data do not locate these events within the county.Heat index: in event narratives only; local data required.
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson7, 2005 to 2020 (7 zone-level)Strongest recorded (records with damage, a wind speed or direct casualties first, then storm type, category and wind): Tropical Storm record, 2008-09-01, $500,000 property; $0 crops, reported for the zone (2008 dollars); NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesZone-level records: applies countywide; national data do not locate these events within the county.Storm Events files every zone of a storm's episode under the storm's event type and category, so a Hurricane (Typhoon) record, especially an inland or remnant one, does not by itself mean hurricane-force winds here; read the damage and wind columns.
Ice StormSperry-Piltz (local data)2, 1997 to 1998 (2 zone-level)No damage reported in 2 records.Zone-level records: applies countywide; national data do not locate these events within the county.Ice thickness: in event narratives only; local data required.
Flash Flood, Flood, Lakeshore Flooddamage and flood days (FIRM for depth)35, 1999 to 2026No damage reported in 35 records.Event records naming member places: Jena town (12 records), Olla town (2 records), Tullos town (2 records).Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage can be $0 or blank even for a major flood, so the worst record here may not be the worst flood; compare FEMA Public Assistance by declaration in B1-d.
Debris Flownone (count and damage)0Physical measure: in event narratives only; local data required.
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)1, 2003 to 2003No damage or casualties reported in 1 records.Event records naming member places: Jena town (1 record).Storm Events lists lightning with damage or casualties; physical measure in event narratives only; local data required.
High Wind and Strong Wind (outside NRI Strong Wind definition)wind speed (kt and mph)3, 2002 to 2019 (3 zone-level)35 kt (40 mph) to 55 kt (63 mph) (median 35 kt (40 mph)); 3 with a recorded value55 kt (63 mph) estimated, High Wind, 2002-10-03; NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesStrong Wind, 2019-07-14, $500 property; $0 crops, reported for the zone (2019 dollars)Zone-level records: applies countywide; national data do not locate these events within the county.
Thunderstorm Windwind speed (kt and mph)125, 1969 to 202652 kt (60 mph) to 70 kt (81 mph) (median 53 kt (61 mph)); 86 with a recorded value70 kt (81 mph) estimated gust, Thunderstorm Wind, 2009-05-03; same speed and measurement basis also recorded on 2004-06-27Thunderstorm Wind, 2014-03-28, $250,000 property; $0 crops (2014 dollars)Event records naming member places: Jena town (52 records), Olla town (9 records), Urania town (4 records), Tullos town (1 record).
TornadoEnhanced Fujita (F before Feb 2007)25, 1950 to 2021F/EF0 to F/EF4 (median between F/EF1 and F/EF2); 24 with a recorded valueF4 tornado, 1953-12-03, 4.3 mi path length (records before 1996 may include the whole path; rating and listing come from the county where the tornado began), 300 yd wide, $2,500,000 property; crops not recorded (1953 dollars), 2 direct deaths, 15 direct injuriesTornado, 1983-05-19, $25,000,000 property; crops not recorded (1983 dollars)Event records naming member places: Jena town (2 records), Olla town (1 record), Tullos town (1 record).From 1996 on, tornado records are per-county segments and length is the path length within this county (NWS Instruction 10-1605); records before 1996 may give the whole path length, including the path outside this county, and before 1996 a tornado is listed once, under the county where it began, with the whole path's rating; counties farther along the path may not list it. Length is not used to rank tornadoes.
Tsunaminone (count and damage)0Physical measure: in event narratives only; local data required.
Volcanic Ash, Volcanic AshfallVolcanic Explosivity Index (local data)0Physical measure: in event narratives only; local data required.
Wildfireacres burned (local data)0Acres burned: in event narratives only; local data required.
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall local)21, 2006 to 2026 (21 zone-level)No damage reported in 21 records.Zone-level records: applies countywide; national data do not locate these events within the county.Snow depth: in event narratives only; local data required.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records are placed with NWS zone-county files, which exist from 2020 on; an earlier record is placed by its zone number in the nearest later file only when its zone name matches that file, records from zones NWS renumbered are placed by name or left out, and a record whose zone is in no known file is left out of every count, so counts before 2020 can be low. Some current zones are also missing from the NWS files, so recent counts can be low too.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

Supports B1-d: previous occurrences

Declaration rows
38
Counted incidents
28

Federal disaster declarations for this county

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2026-01-242026-01-23EM-3638-LAEmergencySEVERE WINTER STORMWinter Weathernone foundnew since last plan; within last 5 years
2024-09-102024-09-10EM-3614-LAEmergencyTROPICAL STORM FRANCINEHurricane (primary); also designated: Tornadonone foundnew since last plan; within last 5 years
2021-09-132021-09-12EM-3574-LAEmergencyTROPICAL STORM NICHOLASHurricanenone foundduring plan review, check whether your last plan included it
2021-08-292021-08-26DR-4611-LAMajor disasterHURRICANE IDAHurricanenone foundduring plan review, check whether your last plan included it
2021-08-272021-08-26EM-3568-LAEmergencyTROPICAL STORM IDAHurricanenone foundduring plan review, check whether your last plan included itsame incident as DR-4611
2021-03-092021-02-11DR-4590-LAMajor disasterSEVERE WINTER STORMSIce Storm$21,262.50during plan review, check whether your last plan included it
2021-02-182021-02-11EM-3556-LAEmergencySEVERE WINTER STORMIce Stormnone foundduring plan review, check whether your last plan included itsame incident as DR-4590
2020-10-272020-10-26EM-3549-LAEmergencyTROPICAL STORM ZETAHurricanenone found
2020-10-162020-10-06DR-4570-LAMajor disasterHURRICANE DELTAHurricane$4,389.05
2020-10-072020-10-06EM-3547-LAEmergencyHURRICANE DELTAHurricanenone foundsame incident as DR-4570
2020-09-142020-09-13EM-3543-LAEmergencyHURRICANE SALLYHurricanenone found
2020-08-282020-08-22DR-4559-LAMajor disasterHURRICANE LAURAHurricane$934,771.71
2020-08-232020-08-22EM-3538-LAEmergencyTROPICAL STORMS LAURA AND MARCOHurricanenone foundsame incident as DR-4559
2020-06-072020-06-05EM-3527-LAEmergencyTROPICAL STORM CRISTOBALHurricanenone found
2020-03-242020-01-20DR-4484-LAMajor disasterCOVID-19 PANDEMICNon-natural, not counted$90,249.28
2020-03-132020-01-20EM-3459-LAEmergencyCOVID-19Non-natural, not countednone foundsame incident as DR-4484
2016-03-132016-03-08DR-4263-LAMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$71,889
2012-08-292012-08-26DR-4080-LAMajor disasterHURRICANE ISAACHurricane$10,855.16
2011-08-182011-04-25DR-4015-LAMajor disasterFLOODINGInland Floodingnone found
2011-05-062011-04-25EM-3322-LAEmergencyFLOODINGInland Flooding$16,266.32same incident as DR-4015
2008-09-022008-09-01DR-1786-LAMajor disasterHURRICANE GUSTAVHurricane (primary); also designated: Inland Flooding$183,037.53
2008-08-292008-08-27EM-3289-LAEmergencyHURRICANE GUSTAVHurricanenone foundsame incident as DR-1786
2006-11-022006-10-16DR-1668-LAMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$96,572.05
2005-09-242005-09-23DR-1607-LAMajor disasterHURRICANE RITAHurricane$17,194.01
2005-09-212005-09-20EM-3260-LAEmergencyHURRICANE RITAHurricanenone foundsame incident as DR-1607
2005-08-292005-08-29DR-1603-LAMajor disasterHURRICANE KATRINAHurricane$116,952.05
2005-08-272005-08-26EM-3212-LAEmergencyHURRICANE KATRINAHurricanenone foundsame incident as DR-1603
2002-10-032002-10-01DR-1437-LAMajor disasterHURRICANE LILIHurricane$13,518.31
1991-05-031991-04-27DR-904-LAMajor disasterSEVERE STORMS, TORNADOES & FLOODINGInland Flooding; TornadoPA not declared for this county
1989-05-201989-05-04DR-829-LAMajor disasterSEVERE STORMS & FLOODINGInland FloodingPA not declared for this county
1987-11-301987-11-15DR-804-LAMajor disasterTORNADOES & FLOODINGTornado (primary); also designated: Inland FloodingPA not declared for this county
1983-01-111983-01-11DR-675-LAMajor disasterSEVERE STORMS AND FLOODINGInland Floodingnone found
1979-05-021979-05-02DR-584-LAMajor disasterSEVERE STORMS & FLOODINGInland FloodingPA not declared for this county
1977-02-221977-02-22EM-3031-LAEmergencyDROUGHT & FREEZINGWinter Weather (primary); also designated: Droughtnone found
1975-06-061975-06-06DR-470-LAMajor disasterHEAVY RAINS, TORNADOES & FLOODINGInland Flooding; Tornadonone found
1975-04-121975-04-12EM-3011-LAEmergencyHEAVY RAINS & FLOODINGInland FloodingPA not declared for this county
1974-02-231974-02-23DR-418-LAMajor disasterFLOODINGInland Floodingnone found
1973-04-271973-04-27DR-374-LAMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found

County Public Assistance: applicants the FEMA record places in this county, including any state agencies FEMA files there; statewide rows are listed on the state page; federal share obligated, nominal dollars.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Statewide declarations

DeclaredIncident beganFEMA numberTypeTitleMapped hazardFlagsNotes
1964-10-031964-10-03DR-178-LAMajor disasterHURRICANE HILDAHurricane (primary); also designated: Inland Flooding
1962-11-051962-11-05DR-139-LAMajor disasterCHLORINE BARGE ACCIDENTNon-natural, not counted
1958-05-201958-05-20DR-84-LAMajor disasterFLOODSInland Flooding
1957-05-161957-05-16DR-73-LAMajor disasterFLOODS & HURRICANEHurricane (primary); also designated: Inland Flooding
1956-10-041956-10-04DR-64-LAMajor disasterHURRICANEHurricane (primary); also designated: Inland Flooding
1953-05-291953-05-29DR-3-LAMajor disasterFLOODInland Flooding

FEMA recorded these with designated area Statewide and no county. Listed on every county page in the state; not counted with county rows.

Source

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

Previous occurrences by hazard, with explicit no-event rows

HazardStorm Events recordsfull periodSince plan approvalrecordsDuring plan reviewrecordsLast 5 yearsrecordsDeclared incidentsdistinct incidentsDeclared since approvaldistinct incidentsPeriodStatement
Avalanche0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Coastal Flooding0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave6313001996 to 2026-06-30
Drought4117017101996 to 2026-06-30
Earthquake000000No Storm Events record; local data required (e.g., USGS).
Hail63707001955 to 2026-06-30
Heat Wave8544744001996 to 2026-06-30
Hurricane70001311996 to 2026-06-30
Ice Storm2000101996 to 2026-06-30
Inland Flooding35110111301996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning1000001996 to 2026-06-30
Strong Wind12822223001955 to 2026-06-30Includes 1 High Wind record and 2 Strong Wind records, event types the NRI definition of this hazard leaves out.
Tornado25010411950 to 2026-06-30
Tsunami0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Volcanic Activity0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather21333211996 to 2026-06-30

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

Notable Storm Events records

DateEvent typeMagnitude or extentDamagenominal dollarsDirect deaths, injuriesindirect not countedLocationFlagsWhy listed
2026-01-24Cold/Wind Chill$0 property; $0 crops, reported for the zone (2026 dollars)0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesnew since last plan; within last 5 yearsB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2019-07-14Strong Wind35 kt (40 mph) estimated gust$500 property; $0 crops, reported for the zone (2019 dollars)0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesB1-c most damaging: High Wind and Strong Wind (outside NRI Strong Wind definition)
2014-03-28Thunderstorm Wind58 kt (67 mph) estimated gust$250,000 property; $0 crops (2014 dollars)0, 0JENAB1-c most damaging: Thunderstorm Wind
2011-06-01Excessive Heat$0 property; $0 crops, reported for the zone (2011 dollars)0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesB1-c worst recorded: Excessive Heat, Heat
2010-10-01Droughtproperty not reported; $0 crops, reported for the zone (2010 dollars)0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesB1-c worst recorded: Drought
2009-05-03Thunderstorm Wind70 kt (81 mph) estimated gust$50,000 property; $0 crops (2009 dollars)0, 0JENAB1-c worst recorded: Thunderstorm Wind
2008-09-01Tropical Storm$500,000 property; $0 crops, reported for the zone (2008 dollars)0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesB1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression
2004-11-23TornadoF3, 3 mi within this county, 300 yd wide$5,000,000 property; crops not reported (2004 dollars)1, 20OLLAdeaths or injuries recorded
2002-10-03High Wind55 kt (63 mph) estimateddamage not reported0, 0NWS zone LAZ022 (LA SALLE), zone-level: may include parts of neighboring countiesB1-c worst recorded: High Wind and Strong Wind (outside NRI Strong Wind definition)
1998-03-07Hail2.75 indamage not reported0, 0ROGERSB1-c worst recorded: Hail
1983-05-19TornadoF3, 7 mi path length (records before 1996 may include the whole path; rating and listing come from the county where the tornado began), 500 yd wide$25,000,000 property; crops not recorded (1983 dollars)0, 5location not recordeddeaths or injuries recorded
1953-12-03TornadoF4, 4.3 mi path length (records before 1996 may include the whole path; rating and listing come from the county where the tornado began), 300 yd wide$2,500,000 property; crops not recorded (1953 dollars)2, 15location not recordeddeaths or injuries recorded

The full list is in the XLSX file, sheet "B1-d Storm Events history" (414 rows).

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records are placed with NWS zone-county files, which exist from 2020 on; an earlier record is placed by its zone number in the nearest later file only when its zone name matches that file, records from zones NWS renumbered are placed by name or left out, and a record whose zone is in no known file is left out of every count, so counts before 2020 can be low. Some current zones are also missing from the NWS files, so recent counts can be low too.

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

State-declared emergencies are not in federal data. Add them from your state emergency management agency.

Tribal and special-area declarations in this state are listed on the state page.

Supports B1-e: probability

Probability: FEMA annualized frequency and descriptor per hazard

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
Avalancheevents per year1994 to 2023 (30 years)see B1-fNot Applicable in NRI for this county; no descriptor.
Coastal Floodingevents per year at a location (modeled)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Cold Wave0.579event-days per yearabout 0.579 days per yearLikelyevent-days in 5 of 30 years, 1996 to 2025 (16.7%)112005-11-12 to 2024-11-12 (19 years)countywideFrost/Freeze records are not counted in this descriptor: they record crop freezes, not cold waves.
Drought32.6event-days per yearabout 32.6 days per yearLikelyevent-days in 11 of 30 years, 1996 to 2025 (36.7%)9032000 to 2025 (25.25 years; D3 and D4 only)countywideNRI gives about 32.6 drought event-days a year here (its annualized frequency over 25.25 years; not its event count divided by the years), but Storm Events has a record in only 11 of 30 years. NRI counts from a different source that records far more events than Storm Events, so this descriptor reads much lower than NRI's frequency; read the two together.
Earthquake0.00124annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.124%not shownmodeledsee B1-fDescriptor not assigned: the NRI value is the chance at a location in the county, not how often the hazard affects the county, and Storm Events does not record earthquakes.
Hail2.54events per yearabout 2.54 per yearHighly likelyFEMA annualized frequency (modeled)96.0 (modeled)1986 to 2023 (38 years)countywide
Heat Wave21.6event-days per yearabout 21.6 days per yearLikelyevent-days in 12 of 30 years, 1996 to 2025 (40%)3492005-11-12 to 2024-11-12 (19 years)countywideNRI gives about 21.6 heat wave event-days a year here (its annualized frequency over 19 years; not its event count divided by the years), but Storm Events has a record in only 12 of 30 years. NRI counts from a different source that records far more events than Storm Events, so this descriptor reads much lower than NRI's frequency; read the two together.
Hurricane0.0689events per yearabout 1 in 15 yearsPossibleFEMA annualized frequency (modeled)221851 to 2024 (Atlantic)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are counted separately in B1-d and need not match.
Ice Storm0.937event-days per yearabout 0.937 days per yearPossibleevent-days in 2 of 30 years, 1996 to 2025 (6.67%)631946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding0.75event-days per yearabout 0.75 days per yearLikelyevent-days in 15 of 30 years, 1996 to 2025 (50%)211996 to 2023 (28 years)see B1-f
Landslide0.195events per year (modeled)about 1 in 5 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning72.4days per year with a strikeabout 72.4 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind2.67events per yearabout 2.67 per yearHighly likelyFEMA annualized frequency (modeled)1011986 to 2023 (38 years)countywide
Tornado0.513events per yearabout 0.51 per yearLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Tsunamiannual probability at the most exposed location (used in place of a county value)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Volcanic Activityannual probabilitynot shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Wildfire0.000421annual probability at a locationchance a given location in the county burns in a year: 0.0421%Storm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo Storm Events record of this hazard, 1996 to 2025; descriptor not assigned (the NRI value is the chance at a location in the county, not how often the hazard affects the county)
Winter Weather2.11event-days per yearabout 2.11 days per yearLikelyevent-days in 12 of 30 years, 1996 to 2025 (40%)402005-11-12 to 2024-11-12 (19 years)countywideNRI gives about 2.11 winter weather event-days a year here (its annualized frequency over 19 years; not its event count divided by the years), but Storm Events has a record in only 12 of 30 years. NRI counts from a different source that records far more events than Storm Events, so this descriptor reads much lower than NRI's frequency; read the two together.

FEMA annualized frequency (modeled) comes from the National Risk Index v1.20 (December 2025). It is not recorded events divided by years, and what it measures depends on the hazard. For most hazards it estimates how often the hazard affects this county each year: it counts events or event-days (drought, heat wave, cold wave, winter weather, ice storm and inland flooding are in days per year; lightning is the number of days per year with a recorded cloud-to-ground strike, from the NOAA Storm Prediction Center daily lightning climatology); it may count events in the surrounding area (hail, strong wind, tornado, hurricane and ice storm use a 49 km grid and buffers) and is averaged over the county's area; and some hazards use a minimum value for places with no recorded event. Earthquake, wildfire and coastal flooding are different: FEMA computes them for each census block and averages them over the county, so the value is the chance (for coastal flooding, the modeled number of floods per year) at a location in the county, which is lower than the chance that the hazard strikes somewhere in the county. Earthquake is the chance of at least minor-damage shaking (U.S. Geological Survey model); wildfire is the chance that a location burns in a large fire (U.S. Forest Service burn probability); coastal flooding comes from FEMA flood zones and NOAA high-tide flooding, so it can be above 1 where high-tide flooding is frequent. Tsunami is the value at the county's most exposed location, from recorded events and modeled return periods. For these four hazards the packet gives no "1 in N years" and takes the descriptor from Storm Events (none for earthquake) unless the value is 1 or more a year. Landslide is a U.S. Geological Survey modeled county rate spread by slope susceptibility. Volcanic activity is the chance that a volcano affecting the county erupts in a year. Drought counts only extreme and exceptional drought (D3 and D4). Source: FEMA, National Risk Index Technical Documentation v1.20, sections 5.2.2 (Table 5), 5.2.3, 7.4, 10.4, 16.5, 17.1, 17.3.1, 17.5, 20.3.1, 21.4, 22.4 and 6 to 23.

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Descriptor scale used in this packet (defined per unit)

UnitDescriptorDefinition
events per yearHighly likely1 or more per year
events per yearLikelyabout once in 1 to 10 years
events per yearPossibleabout once in 10 to 100 years
events per yearUnlikelyless than once in 100 years
annual probabilityLikely10% to under 100% chance in a given year
annual probabilityPossible1% to under 10% chance in a given year
annual probabilityUnlikelyunder 1% chance in a given year
event-days (share of years)Highly likelyevent-days recorded in 90% or more of years
event-days (share of years)Likelyevent-days recorded in 10% to under 90% of years
event-days (share of years)Possibleevent-days recorded in some years but under 10% of years
lightning strike-daysHighly likelycloud-to-ground strikes on 1 or more days per year

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Intensity bands: historical frequency (Storm Events)

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 202519300.633
Hail2.00 in+1996 to 20253300.1
Strong Wind (Thunderstorm Wind records)50-64 kt1996 to 202572302.4
Strong Wind (Thunderstorm Wind records)65 kt+1996 to 20258300.267
Strong Wind (Thunderstorm Wind records)unmeasured or below 50 kt1996 to 20250300
TornadoEF0-11996 to 20258300.267
TornadoEF2-31996 to 20259300.3
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20251300.0333

Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.

Source

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions.

Supports B1-f: variation across the planning area

Range of census tract risk within the county

HazardTractsrated of allRisk score minNRI score, 0 to 100MedianMaxTracts by ratingNote
Avalanche0 of 3Not Applicable 3
Coastal Flooding0 of 3Not Applicable 3
Cold Wave3 of 356.668.268.6Relatively Moderate 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Drought2 of 374.983.491.9Relatively Low 1, Very Low 1, No Rating 1National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range above mostly reflects where crop and livestock value is, not where buildings and people are. Confirm locally.
Earthquake3 of 342.060.363.7Relatively Low 3
Hail3 of 364.674.375.0Relatively Moderate 2, Relatively Low 1National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Heat Wave3 of 388.593.793.8Relatively High 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Hurricane3 of 376.479.781.5Relatively Moderate 2, Relatively Low 1
Ice Storm3 of 379.387.587.9Relatively Moderate 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Inland Flooding3 of 368.971.077.0Relatively Moderate 3
Landslide3 of 364.670.084.4Relatively Low 1, Very Low 2
Lightning3 of 381.390.691.8Relatively High 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Strong Wind3 of 386.493.195.3Relatively High 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Tornado3 of 363.376.276.6Relatively High 2, Relatively Moderate 1
Tsunami0 of 3Not Applicable 3
Volcanic Activity0 of 3Not Applicable 3
Wildfire3 of 365.976.577.3Relatively Low 2, Very Low 1
Winter Weather3 of 348.258.061.9Relatively Moderate 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.

Rated tracts only: No Rating (score 0.0), Not Applicable and Insufficient Data tracts are counted but not used for the minimum, median and maximum.

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

Per-member block (Starter, confirm locally)

MemberTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance matchedfederal share obligated, nominal dollarsEvent records naming this placeall years; since the member's planNotes
LaSalle ParishCountyApproved, expires 2026-11-17FMA RL 14, SRL 29; any 66none found0; 0
Jena townTownApproved, expires 2026-11-17FMA RL 1, SRL 0; any 2$132,311.0288; 11
Olla townTownApproved, expires 2026-11-17FMA RL 0, SRL 0; any 0$98,711.1322; 4
Tullos townTownApproved, expires 2026-11-17FMA RL 0, SRL 0; any 0$22,533.108; 1
Urania townTownApproved, expires 2026-11-17FMA RL 0, SRL 0; any 0$97,2007; 6

Member rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each member row, while the county table counts only its part in this county.

School districts and special districts get a plan clock row only.

Sources

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)

FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Supports B2-a and B2-b: assets and impacts

Local data required

County-level starter. The plan must describe impacts for each participant and its own assets.

  • Critical facilities and lifelines per hazard
  • A problem statement per participant per hazard
  • Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
  • Future assets

County-level starter: exposure, expected annual loss and damage since the plan

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearEAL population equivalencestatistical value of life and injury, $13.7M per life, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2021-11-18county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
AvalancheNot Applicable in NRI for this county
Coastal FloodingNot Applicable in NRI for this county
Cold Wave$2,432,968,049$2,062,93614,762$3,802$930$242,8430.000156%$0
Drought$288,909$31,05110.7% (agriculture)$0NRI has no building exposure for this hazard; agriculture shown
Earthquake$4,198,722,49214,791$75,266$33,7680.00179%
Hail$2,432,968,049$2,062,93614,762$59,411$319$4,5950.00244%$0
Heat Wave$2,432,968,049$2,062,93614,762$39$12$618,733under 0.0001%$0
Hurricane$2,432,968,049$2,062,93614,762$317,362$3,880$12,5110.013%none found (1 declaration)
Ice Storm$2,432,968,04914,762$29,659$31,1820.00122%
Inland Flooding$2,432,175,053$842,124692$2,563,698$5,868$8,931n/a (see note)$0NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b. EAL as % of exposure: n/a.
Landslide$17,187,847105$183$340.00106%
Lightning$2,432,968,04914,762$4,932$111,3040.000203%
Strong Wind$2,432,968,049$2,062,93614,762$103,496$1,782$201,2720.00425%$0
Tornado$2,432,968,049$2,062,93614,762$284,495$85$214,5690.0117%none found (1 declaration)
TsunamiNot Applicable in NRI for this county
Volcanic ActivityNot Applicable in NRI for this county
Wildfire$282,002,116$479,9802,802$5,231$2$1,8330.00185%
Winter Weather$2,432,968,049$2,062,93614,762$8,418$5$9140.000346%$0none found (1 declaration)

Totals since 2021-11-18 (Storm Events through 2026-06-30): 40 county-coded records, 40 with a damage value recorded (including $0), $0; 67 zone-level records, 67 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance on counted declarations none found (2 declarations, 0 with PA).

Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).

FEMA does not split Public Assistance by hazard. A declaration mapped to several hazards is listed under each of them with its full amount, so the per-hazard column must not be added up; the unit total counts each declaration once.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

Supports B2-a: context

County context

MeasureValue
Population14,762
Building value (total, not at risk)$2,432,968,049
Agriculture value (total, not at risk)$2,062,936
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$3,499,925
Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage)$1,482,490
Social vulnerability ratingRelatively Moderate
Community resilience ratingRelatively High
NRI versionDecember 2025

FEMA's all-hazard expected annual loss total adds buildings, agriculture and population equivalence; the two parts are shown separately so the property figure is not read as including the statistical value of life.

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)

Supports B2-c: repetitive loss

Repetitive loss in this county, both definitions

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)15Severe repetitive loss, FMA definition (44 CFR 77.2)29
Repetitive loss, NFIP insurance definition63Severe repetitive loss, NFIP insurance definition23

Your state NFIP coordinator's list may use the NFIP insurance definition, so its counts can be higher.

Repeat-flood properties: county and state-level rows

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total152963236862
LASALLE PARISH*142961236661
JENA, TOWN OF1020201
State level, not in this county: county not reported0040400

Repeat-flood properties by plan member (NFIP community)

MemberNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredpropertiesNote
LaSalle Parish220112142961236661
Jena town2203341020201
Olla town2203430000000
Tullos town2203500000000
Urania town2203970000000

Per-member types: XLSX sheet 'B2-c Members'.

Member rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each member row, while the county table counts only its part in this county.

County repeat-flood properties by occupancy group

Occupancy groupRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
single-family residential152962236762
2 to 4 unit residential0000000
other residential0000000
non-residential0010100
not reported0000000

Institutional properties cannot be separated in this data: FEMA's occupancy groups have no institutional class, so they fall in non-residential or other residential in the table by occupancy group.

FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites; OpenFEMA's fmaRl field description omits the Increased Cost of Compliance clause of 44 CFR 77.2(i). NFIP repetitive loss (FEMA insurance definition, nfipRl) is 2 or more claims over $1,000 in 10 years and can drop to false when a property is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured.

Your state NFIP coordinator's list may use the NFIP insurance definition, so its counts can be higher.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (as of 2026-08-02). No property is identified. County assignment is FEMA's geocode.

Counts may differ from your state NFIP coordinator's list, which is the source the Handbook names.

In this county 2 properties are FMA repetitive loss but not NFIP repetitive loss, and 50 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Every table above lists its own sources. The full list, for the plan's bibliography (FEMA review item A4-a):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
  5. FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
  6. NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
  7. NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty
  8. U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-28, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx

OpenFEMA disclaimer

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

Reuse, citation and corrections

Reuse and citation: Hazard Plain text and tables are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/); credit Hazard Plain and the release. The underlying federal data are public domain; OpenFEMA data are also subject to the OpenFEMA terms and conditions.

Cite this: Hazard Plain (2026). LaSalle Parish, LA: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-28; County area 22059). Preview: automated baseline. Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Corrections: to report an error, name the packet, the table and what your records show. Contact: to be added

Hazard Plain release 2026-10. As of 2026-09-28; Storm Events data through 2026-06-30. File hazard-plain_2026-10_LA_22059. Preview: automated baseline.