Hazard Plain Automated baseline

St. Louis County, MN

Risk-assessment baseline packet

County FIPS:
27137
Release:
2026-10
Data as of:
2026-09-30
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.

Hazard Plain release 2026-10, as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Expired on 2025-05-05. Plan: St. Louis County (FEMA plan 106429), approved 2020-05-06.

Since the plan was approved on 2020-05-06: 4 new hazard declarations (4 incidents) and 565 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Cold Wave ($50,630,840 a year), Inland Flooding ($49,768,466) and Lightning ($2,903,081).

The tables that follow are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); each heading says which item its tables support.

Plan clock

Status:
Expired on 2025-05-05
Plan:
St. Louis County (FEMA plan 106429)
Approved:
2020-05-06
Days since expiry:
513
Update underway:
none recorded in FEMA's plan tracker

Until a new plan is approved, FEMA mitigation project grants (HMGP, FMA) need a FEMA exception (44 CFR 201.6(a)(3)).

What changed since your last plan (approved 2020-05-06)

New federal declarations:
4 new hazard declarations (4 incidents): DR-4659-MN (Severe Storms, Straight-Line Winds, and Flooding), DR-4722-MN (Severe Storms and Flooding), DR-4797-MN (Severe Storms and Flooding), FM-5583-MN (Munger Shaw Fire)
Storm Events records since approval:
565 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 10
Repeat-flood change:
this release sets the baseline count.

Sources: 1, 2, 4, 6 (numbered list at the end)

Plan status for every jurisdiction listed in this county: 28 rows, in the section "Plan clock: Plan status for every jurisdiction listed in this county" on the following pages.

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

Plan clock

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryNotes
St. Louis CountyCountyExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513
Aurora cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Babbitt cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Biwabik cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-10-01
Brookston cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-10-01
Buhl cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-10-01
Chisholm cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-09-04
Cook cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-10-01
Duluth cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Ely cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Eveleth cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Floodwood cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-10-07
Gilbert cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Hermantown cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Hibbing cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Hoyt Lakes cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Iron Junction cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Kinney cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Leonidas cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513
McKinley cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Meadowlands cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513
Mountain Iron cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Orr cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-09-04
Proctor cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Rice Lake cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-09-04
Tower cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-09-04
Virginia cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28
Winton cityCityExpired on 2025-05-05St. Louis County (FEMA plan 106429)2020-05-062025-05-05-513this jurisdiction approved 2020-07-28

Supports FEMA checklist item B1-a: hazard identification

Hazards NRI does not cover (local data needed)

  • 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)

Sources: 5, 6

Rank by EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL total (see note)modeled dollars per yearStorm Events records, 1996 to 2026-06-30countWhy this hazard can be left outNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1Cold WaveVery HighVery High$11,468$52,235$50,567,137$50,630,840100Includes 2 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
2Inland FloodingRelatively ModerateRelatively Moderate$49,633,621$35$134,810$49,768,466113
3LightningVery HighVery High$101,136n/a$2,801,945$2,903,08126
4Heat WaveRelatively ModerateRelatively Moderate$787under $1$2,434,242$2,435,0294
5TornadoRelatively LowRelatively Moderate$949,535$166$1,280,093$2,229,79312
6Winter WeatherVery HighVery High$527,399$97$867,574$1,395,071241Includes 1 Sleet record (outside NRI's Winter Weather definition).
7HailRelatively ModerateRelatively Moderate$1,101,593$3,133$78,291$1,183,017450
8Strong WindRelatively ModerateRelatively Moderate$27,982$4,233$1,047,466$1,079,681533Includes 12 High Wind and 9 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
9WildfireRelatively LowRelatively Low$488,245$26$23,701$511,9715
10Ice StormRelatively ModerateRelatively Moderate$138,341n/a$29,757$168,09814
11DroughtRelatively LowRelatively Lown/a$88,863n/a$88,86367
12Coastal FloodingVery LowVery Low$8,000n/a$677$8,6780No recorded events in Storm Events since 1996 (data through 2026-06-30).
13EarthquakeVery LowVery Low$2,799n/a$571$3,370Storm Events does not record earthquakes.
14LandslideVery LowVery Low$2,026n/a$390$2,4160No recorded events in Storm Events since 1996 (data through 2026-06-30).
HurricaneNot ApplicableNot Applicable0NRI rates hurricane Not Applicable for this county, and no counted federal declaration for this county names it (EM-3242-MN names it but is not counted as a local occurrence; see B1-d).No recorded events in Storm Events since 1996 (data through 2026-06-30).
TsunamiInsufficient DataInsufficient Datan/an/an/an/a0No recorded events in Storm Events since 1996 (data through 2026-06-30).

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

NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.

Local data needed: state and local landslide and tsunami records (Storm Events records these hazards only in part).

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche and volcanic activity. That is the evidence for leaving them out of the plan.

The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.

Supports FEMA checklist item B1-b: hazard location

Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather.

Coastal Flooding and Inland Flooding: The 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.

Hazards that vary within the county: highest-rated census tracts

Source: 5

HazardHighest-rated census tractsNRI risk rating, score 0 to 100
Earthquaketract 3.02 (Very Low, 3.7); tract 124 (Very Low, 2.4); tract 121 (Very Low, 1.7)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 155.02 (Relatively Low, 92.5); tract 155.03 (Relatively Low, 89.2); tract 155.01 (Relatively Low, 88.4)
Tornadotract 121 (Relatively Low, 53.3); tract 124 (Relatively Low, 52.9); tract 3.02 (Relatively Low, 51.3)
Tsunamino tract has a National Risk Index rating for this hazard
Wildfiretract 154.01 (Relatively Moderate, 96.0); tract 155.01 (Relatively Moderate, 94.9); tract 155.02 (Relatively Moderate, 94.8)

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 3.02 is Census Tract 3.02). FEMA's Resilience Analysis and Planning Tool maps the National Risk Index for every tract: https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool

Supports FEMA checklist item B1-c: hazard extent

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

Sources: 6, 7

HazardScaleRecordscount and yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to jurisdictionsNote
Coastal Flood, Storm Surge/Tidenone in data (flood depth: FIRM)0Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill98 records, 1996 to 2026 (98 zone-level)1 day to 6 days (median 2 days); 66 with a recorded value6 consecutive days, 2013-12-28 to 2014-01-02, 1 direct death, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage2 records, 2011 (2 zone-level)No crop damage reported in 2 records.Countywide (zone-level records).
DroughtU.S. Drought Monitor scale (D0 to D4)67 records, 2006 to 2026 (67 zone-level)21 days to 456 days (median 167 days); 11 with a recorded value456 days (about 15.0 months), 2006-07-18 to 2007-10-16, a run of 17 consecutive Storm Events drought records, zone-levelCountywide (zone-level records).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)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)525 records, 1958 to 20260.75 in to 4.5 in (median 1 in); 525 with a recorded value4.5 in hail, 1989-08-03Hail, 1998-08-23, $50,000,000 property; crops not reported (1998 dollars)Event records naming jurisdictions in the plan: Duluth city (47 records), Hibbing city (16 records), Hermantown city (12 records), Chisholm city (11 records), Floodwood city (11 records), Orr city (7 records), Cook city (6 records), Proctor city (6 records), Mountain Iron city (5 records), Virginia city (5 records); and 13 more jurisdictions (see the Excel file).
Excessive Heat, Heatheat index (in event narratives)4 records, 2001 to 2021 (4 zone-level)1 day to 5 days (median 1.5 days); 4 with a recorded value5 consecutive days, 2011-07-16 to 2011-07-20, zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice StormSperry-Piltz ice scale (local data)14 records, 1997 to 2025 (14 zone-level)Ice Storm, 2001-04-22, $4,200,000 property; crops not reported (2001 dollars); NWS zone MNZ037Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)113 records, 1996 to 2025 (9 zone-level)Lakeshore Flood, 2018-10-09, $18,400,000 property; $0 crops (2018 dollars); NWS zone MNZ037Event records naming jurisdictions in the plan: Duluth city (12 records), Cook city (9 records), Hibbing city (7 records), Ely city (4 records), Floodwood city (3 records), Hermantown city (3 records), Winton city (3 records), Chisholm city (2 records), Virginia city (2 records), Brookston city (1 record); and 2 more jurisdictions (see the Excel file). Zone-level records (9) apply countywide.Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)26 records, 1996 to 2025Lightning, 2012-08-18, $0 property; $0 crops (2012 dollars), 1 direct death, 4 direct injuriesLightning, 1998-07-14, $400,000 property; crops not reported (1998 dollars)Event records naming jurisdictions in the plan: Duluth city (6 records), Hibbing city (2 records), Ely city (1 record), Mountain Iron city (1 record), Orr city (1 record), Virginia city (1 record), Winton city (1 record).Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)21 records, 1998 to 2023 (21 zone-level)28 kt (32 mph) to 64 kt (74 mph) (median 51 kt (59 mph)); 19 with a recorded value64 kt (74 mph) measured gust, High Wind, 2019-10-21; NWS zone MNZ037Strong Wind, 2022-11-10, $800,000 property; $0 crops (zone total, 2022 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)647 records, 1955 to 202626 kt (30 mph) to 93 kt (107 mph) (median 52 kt (60 mph)); 557 with a recorded value93 kt (107 mph) estimated gust, Thunderstorm Wind, 2023-09-05Thunderstorm Wind, 1999-07-04, $80,000 property; crops not reported (1999 dollars)Event records naming jurisdictions in the plan: Duluth city (24 records), Floodwood city (21 records), Hibbing city (20 records), Ely city (14 records), Cook city (11 records), Virginia city (10 records), Babbitt city (9 records), Hermantown city (9 records), Orr city (8 records), Aurora city (7 records); and 12 more jurisdictions (see the Excel file).
TornadoEnhanced Fujita (Fujita before Feb 2007)43 records, 1953 to 2026F/EF0 to F/EF3 (median F/EF1); 43 with a recorded valueF3 tornado, 1969-08-06, 18.4 mi path length (whole path, pre-1996), 2,933 yd wide, $2,500,000 property; crops not recorded (1969 dollars), 20 direct injuriesEvent records naming jurisdictions in the plan: Orr city (1 record).Before 1996 a tornado is listed once, under the county where it began, with its whole path's rating and length; from 1996 on, each county lists its own segment. Length is not used to rank tornadoes (see Methods).
Tsunaminone (count and damage only)0
Wildfireacres burned (local data)5 records, 2007 to 2026 (5 zone-level)Wildfire, 2025-05-12, $13,000,000 property; $0 crops (2025 dollars); NWS zone MNZ019Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)241 records, 1996 to 2026 (241 zone-level)Winter Storm, 2018-04-15, $9,000,000 property; $0 crops (2018 dollars); NWS zone MNZ037Countywide (zone-level records).

Where a hazard names more than 10 jurisdictions, the table lists the 10 with the most records; every one is in the Excel file, sheet "B1-c Extent".

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of debris flow, lightning and tsunami.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records from zones that no NWS zone-county file places in this county (mostly before 2020) are not counted here (the Methods page explains the zone matching).

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

Supports FEMA checklist item B1-d: previous occurrences

Federal declarations for this county: 17 declarations covering 14 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2025-05-142025-05-12FM-5583-MNFire managementMunger Shaw FireWildfireno Public Assistance recordednew since last plan; within last 5 years
2024-06-282024-06-16DR-4797-MNMajor disasterSevere Storms and FloodingInland Flooding$5,628,712.45new since last plan; within last 5 years
2023-07-192023-04-11DR-4722-MNMajor disasterSevere Storms and FloodingInland Flooding$1,998,359.62new since last plan; within last 5 years
2022-07-132022-04-22DR-4659-MNMajor disasterSevere Storms, Straight-Line Winds, and FloodingInland Flooding (primary); also designated: Strong Wind$1,410,627.17new since last plan; within last 5 years
2020-04-072020-01-20DR-4531-MNMajor disasterCOVID-19 PandemicNon-natural, not counted$1,206,973.75in the 12 months before plan approval
2020-03-132020-01-20EM-3453-MNEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedin the 12 months before plan approvalsame incident as DR-4531
2019-02-012018-10-09DR-4414-MNMajor disasterSevere Storms and FloodingInland Flooding$9,450,975.56
2018-09-052018-06-15DR-4390-MNMajor disasterSevere Storms, Tornadoes, Straight-Line Winds, and FloodingInland Flooding (primary); also designated: Strong Wind, Tornado$563,929.56
2012-07-062012-06-14DR-4069-MNMajor disasterSevere Storms and FloodingInland Flooding$18,536,523.11
2005-09-132005-08-29EM-3242-MNEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2001-05-162001-03-23DR-1370-MNMajor disasterSevere Winter Storms, Flooding, and TornadoesInland Flooding (primary); also designated: Ice Storm, Tornado, Winter Weather$522,879.39
1999-07-281999-07-04DR-1283-MNMajor disasterSevere Storms, Winds, and FloodingInland Flooding$3,096,472.35
1997-04-081997-03-21DR-1175-MNMajor disasterSevere Flooding, High Winds,Severe StormsInland Flooding (primary); also designated: Strong Windno Public Assistance recorded
1995-08-181995-07-09DR-1064-MNMajor disasterSevere Thunderstorms, Winds, Flooding, Tornadoes, and HeatInland Flooding; Tornadono Public Assistance recorded
1976-06-171976-06-17EM-3013-MNEmergencyDroughtDroughtno Public Assistance recorded
1972-08-251972-08-25DR-350-MNMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1970-07-221970-07-22DR-291-MNMajor disasterHeavy Rains & FloodingInland Floodingno Public Assistance recorded

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.

Statewide declarations

Source: 2

DeclaredIncident beganFEMA numberTypeTitleMapped hazard
1957-06-221957-06-22DR-80-MNMajor disasterFloodsInland Flooding

FEMA recorded these with designated area Statewide and no county, so they are listed on every county page in the state and not counted with county rows. Local data needed: whether each one affected this county.

7 Fire Management declarations (1976-09-08 to 1976-10-01) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

Public Assistance not placed in any Minnesota county: 14 rows, $9,133,931.59; listed on the Minnesota state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Coastal Flooding0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave10036227001996 to 2026-06-30Includes 2 Frost/Freeze records.
Drought6729024101996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail5251615105001955 to 2026-06-30
Heat Wave4100001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm14303101996 to 2026-06-30
Inland Flooding113563551231996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning26603001996 to 2026-06-30
Strong Wind66819215148311955 to 2026-06-30Includes 12 High Wind and 9 Strong Wind records.
Tornado43434301950 to 2026-06-30
Tsunami0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire5404111996 to 2026-06-30
Winter Weather241731266101996 to 2026-06-30Includes 1 Sleet record.

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-05-12Wildfire$13,000,000 property; $0 crops (zone total, 2025 dollars)0, 0NWS zone MNZ019 (CENTRAL ST. LOUIS), zone-levelnew since last plan; within last 5 yearsB1-c worst recorded: Wildfire
2023-09-05Thunderstorm Wind93 kt (107 mph) estimated gust$10,000 property; $0 crops (2023 dollars)0, 0POLOnew since last plan; within last 5 yearsB1-c worst recorded: Thunderstorm Wind
2019-10-21High Wind64 kt (74 mph) measured gust$0 property; $0 crops (zone total, 2019 dollars)0, 0NWS zone MNZ037 (SOUTHERN ST. LOUIS / CARLTON), zone-levelin the 12 months before plan approvalB1-c worst recorded: High Wind and Strong Wind
2018-10-09Lakeshore Flood$18,400,000 property; $0 crops (zone total, 2018 dollars)0, 0NWS zone MNZ037 (SOUTHERN ST. LOUIS / CARLTON), zone-levelB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2018-04-15Winter Storm$9,000,000 property; $0 crops (zone total, 2018 dollars)0, 0NWS zone MNZ037 (SOUTHERN ST. LOUIS / CARLTON), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2013-12-28Cold/Wind Chilldamage not reported0, 0NWS zone MNZ011 (NORTHERN ST. LOUIS), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2012-08-18Lightning$0 property; $0 crops (2012 dollars)1, 4DULUTH SKY HARBOR APTdeaths or injuries recorded
2011-07-16Heat$0 property; $0 crops (zone total, 2011 dollars)0, 0NWS zone MNZ020 (SOUTHERN LAKE), zone-levelB1-c worst recorded: Excessive Heat, Heat
2001-08-07Heatdamage not reported5, 0NWS zone MNZ037 (SOUTHERN ST. LOUIS / CARLTON), zone-leveldeaths or injuries recorded
1989-08-03Hail4.5 indamage not recorded (pre-1996 record)0, 3location not recordedB1-c worst recorded: Hail
1969-08-06TornadoF3, 5.7 mi path length (whole path, pre-1996), 117 yd wide$250,000 property; crops not recorded (1969 dollars)2, 3location not recordeddeaths or injuries recorded
1969-08-06TornadoF3, 18.4 mi path length (whole path, pre-1996), 2,933 yd wide$2,500,000 property; crops not recorded (1969 dollars)0, 20location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,806 rows).

Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.

Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).

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

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

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
Coastal Flooding0.0128events per year at a location (modeled)about 0.013 per year at a given location in the countyStorm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo descriptor: no Storm Events record 1996 to 2025
Cold Wave14.9event-days per yearabout 14.9 days per yearLikelyStorm Events event-days in 22 of 30 years, 1996 to 2025 (73.3%)2802005-11-12 to 2024-11-12 (19 years)countywide
Drought12.7event-days per yearabout 12.7 days per yearLikelyStorm Events event-days in 13 of 30 years, 1996 to 2025 (43.3%)4762000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.000075annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.0075%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail0.934events per yearabout 0.93 per yearLikelyFEMA annualized frequency (modeled)34.9 (modeled)1986 to 2023 (38 years)countywide
Heat Wave0.337event-days per yearabout 0.337 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)7.152005-11-12 to 2024-11-12 (19 years)countywide
Hurricaneevents per year1851 to 2024 (Atlantic)see B1-fNot Applicable in NRI for this county; no descriptor.
Ice Storm0.156event-days per yearabout 0.156 days per yearLikelyStorm Events event-days in 9 of 30 years, 1996 to 2025 (30%)111946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding1.46event-days per yearabout 1.46 days per yearLikelyStorm Events event-days in 19 of 30 years, 1996 to 2025 (63.3%)411996 to 2023 (28 years)see B1-f
Landslide2.39events per year (modeled)about 2.39 per yearHighly likelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning27.2days per year with a strikeabout 27.2 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.714events per yearabout 0.71 per yearLikelyFEMA annualized frequency (modeled)271986 to 2023 (38 years)countywide
Tornado0.394events per yearabout 1 in 3 yearsLikelyFEMA 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)Storm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo descriptor: no Storm Events record 1996 to 2025
Wildfire0.000435annual probability at a locationchance a given location in the county burns in a year: 0.0435%PossibleStorm Events records in 2 of 30 years, 1996 to 2025 (6.67%)not shownmodeledsee B1-f
Winter Weather17.6event-days per yearabout 17.6 days per yearHighly likelyStorm Events event-days in 30 of 30 years, 1996 to 2025 (100%)3292005-11-12 to 2024-11-12 (19 years)countywide

FEMA annualized frequency (modeled) is the National Risk Index v1.20 (December 2025) estimate of how often a hazard affects this county in a year; it is not recorded events divided by years, and its unit differs by hazard (events, event-days, or days with a lightning strike per year). For earthquake, wildfire, coastal flooding and tsunami the value is the chance (or number of events) at a location in the county, not across the county, so no "1 in N years" is given and the descriptor comes from Storm Events where it has a record (none for earthquake). The Methods page gives each hazard's method, from FEMA's National Risk Index Technical Documentation v1.20.

Where NRI gives event-days, the descriptor comes from the share of years with a Storm Events record; NRI's source records more events, so the two differ.

Descriptor scale used in this packet (defined per unit)

Sources: 5, 6

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

Intensity bands: historical frequency (Storm Events)

Source: 6

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 2025235307.83
Hail2.00 in+1996 to 202530301
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20254643015.5
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202532301.07
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20251300.0333
TornadoEF0-11996 to 202511300.367
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).

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.

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 (https://resilience.climate.gov/).

Supports FEMA checklist item B1-f: hazards that vary across jurisdictions

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Coastal Flooding16 of 7469.773.180.0Relatively Low 6, Very Low 10, No Rating 58
Cold Wave34 of 7416.199.699.9Very High 31, Relatively High 1, Relatively Low 1, Very Low 1, No Rating 40
Drought23 of 7470.581.590.6Relatively Low 12, Very Low 11, No Rating 51
Earthquake29 of 740.30.63.7Very Low 29, No Rating 45
Hail74 of 7426.061.182.0Relatively Moderate 21, Relatively Low 49, Very Low 4
Heat Wave34 of 741.771.790.6Relatively High 4, Relatively Moderate 25, Relatively Low 2, Very Low 3, No Rating 40
Hurricane0 of 74Not Applicable 74
Ice Storm74 of 741.921.568.7Relatively Low 22, Very Low 52
Inland Flooding74 of 741.751.589.5Relatively High 9, Relatively Moderate 31, Relatively Low 22, Very Low 12
Landslide74 of 7410.247.592.5Relatively Low 4, Very Low 70
Lightning74 of 7439.883.597.4Very High 4, Relatively High 43, Relatively Moderate 24, Relatively Low 3
Strong Wind74 of 7416.543.569.0Relatively Moderate 16, Relatively Low 55, Very Low 3
Tornado74 of 749.035.353.3Relatively Low 54, Very Low 20
Tsunami0 of 74Not Applicable 62, Insufficient Data 12
Wildfire69 of 7419.956.696.0Relatively Moderate 5, Relatively Low 17, Very Low 47, No Rating 5
Winter Weather34 of 7411.097.699.6Very High 28, Relatively High 3, Relatively Moderate 1, Relatively Low 1, Very Low 1, No Rating 40

Drought: Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

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.

The score ranks a tract against all U.S. tracts (100 = highest). The rating is FEMA's category for the tract's risk value, computed differently, so the two can disagree.

Frequency data for cold wave, drought, hail, heat wave, ice storm, lightning, strong wind and winter weather are county-wide or coarse (49 km grid or NWS zone), the same for every jurisdiction; the tract range mostly reflects where buildings and people are (crop and livestock value where a line above names agriculture).

Each jurisdiction (starting figures from federal data)

Sources: 1, 3, 4, 6

JurisdictionTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollarsEvent records naming this placeall years; since its planNotes
St. Louis CountyCountyExpired on 2025-05-05FMA RL 0, SRL 0; any 3$1,028,143.970 total; 0 since its planIncludes $481,249.08 for declarations not counted as hazard incidents (DR-4531-MN).
Aurora cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$249,369.4611 total; 6 since its plan
Babbitt cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$54,063.3013 total; 4 since its plan
Biwabik cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$303,504.8210 total; 2 since its plan
Brookston cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$9,350.518 total; 2 since its plan
Buhl cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$31,460.256 total; 2 since its plan
Chisholm cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$298,549.5218 total; 12 since its plan
Cook cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$105,052.1326 total; 9 since its plan
Duluth cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 3$11,022,526.9989 total; 8 since its planIncludes $660,430.77 for declarations not counted as hazard incidents (DR-4531-MN).
Ely cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$27,832.9322 total; 8 since its plan
Eveleth cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$100,717.3712 total; 2 since its plan
Floodwood cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 2$88,353.7435 total; 13 since its plan
Gilbert cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$68,985.757 total; 2 since its plan
Hermantown cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$314,500.8924 total; 1 since its plan
Hibbing cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$604,330.0645 total; 13 since its plan
Hoyt Lakes cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$82,349.425 total; 1 since its plan
Iron Junction cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$28,854.082 total; 0 since its plan
Kinney cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$9,112.821 total; 1 since its plan
Leonidas cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
McKinley cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$34,201.100 total; 0 since its plan
Meadowlands cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0no Public Assistance recorded8 total; 2 since its plan
Mountain Iron cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$41,261.0310 total; 2 since its plan
Orr cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0no Public Assistance recorded17 total; 4 since its plan
Proctor cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 1$297,678.5310 total; 0 since its plan
Rice Lake cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Tower cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$99,979.307 total; 0 since its plan
Virginia cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0$190,940.9718 total; 5 since its plan
Winton cityCityExpired on 2025-05-05FMA RL 0, SRL 0; any 0no Public Assistance recorded7 total; 6 since its plan

Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).

County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.

Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts

Local data needed

The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.

  • Critical facilities and lifelines per hazard
  • A problem statement per jurisdiction 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

Sources: 1, 2, 3, 5, 6, 7

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2020-05-06county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Coastal Flooding$2,907,418,047n/a3,346$8,000n/a$6770.000275%
Cold Wave$24,943,200,925$14,099,21775,689$11,468$52,235$50,567,137under 0.0001%$0
Droughtn/a$10,365,671n/an/a$88,863n/a0.857% (agriculture)$0NRI has no building exposure for this hazard; agriculture shown
Earthquake$105,269,636,445n/a200,231$2,799n/a$571under 0.0001%
Hail$58,382,738,768$20,786,875200,067$1,101,593$3,133$78,2910.00189%$10,000
Heat Wave$24,936,592,890$14,039,10775,656$787under $1$2,434,242under 0.0001%$0
HurricaneNot Applicable in NRI for this county
Ice Storm$58,183,261,697n/a199,534$138,341n/a$29,7570.000238%$0
Inland Flooding$58,188,174,365$905,0822,922$49,633,621$35$134,810n/a (see note)$3,210,000$9,037,699.24NRI 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.
Landslide$1,313,115,119n/a4,121$2,026n/a$3900.000154%
Lightning$58,382,738,768n/a200,067$101,136n/a$2,801,9450.000173%$303,500
Strong Wind$58,382,738,768$20,786,875200,067$27,982$4,233$1,047,466under 0.0001%$254,000$800,000$1,410,627.17Storm Events damage since the plan includes 1 zone-level Strong Wind record ($800,000): a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition.
Tornado$58,382,738,768$20,786,875200,067$949,535$166$1,280,0930.00163%$200,000
Tsunamin/an/an/an/an/an/aNRI publishes no building exposure for this county
Wildfire$10,452,359,892$12,432,47548,172$488,245$26$23,7010.00467%$21,700,000no Public Assistance recorded (1 declaration)
Winter Weather$24,943,200,925$14,099,21775,689$527,399$97$867,5740.00211%$1,000,000

Totals since 2020-05-06 (Storm Events through 2026-06-30): 413 county-coded records, 413 with a damage value recorded (including $0), $3,977,500; 152 zone-level records, 152 with a damage value recorded (including $0), $23,500,000 reported for the zone; Public Assistance: $9,037,699.24 on 4 counted declarations, 3 of them with Public Assistance.

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 does not add up to the total; the unit total counts each declaration once.

NRI computes earthquake exposure on its own basis, so it exceeds the county building value in B2-a.

Supports FEMA checklist item B2-a: vulnerability (county context)

County context

Source: 5

MeasureValue
Population200,067
Building value (total, not at risk)$58,382,738,768
Agriculture value (total, not at risk)$20,786,875
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$53,141,721
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)$59,266,654
Social vulnerability ratingRelatively Low
Community resilience ratingVery High
NRI versionDecember 2025

FEMA's all-hazard expected annual loss adds buildings, agriculture and population equivalence; this table gives the property part and the population-equivalence part as separate rows.

Social vulnerability: higher means people are more likely to be harmed and slower to recover. Community resilience: lower means the community is less able to recover. High social vulnerability and low resilience both raise the NRI risk rating.

Supports FEMA checklist item B2-c: repetitive loss properties

Repetitive loss in this county, both definitions

Sources: 1, 4

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition10Severe repetitive loss, NFIP insurance definition0

The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).

Repeat-flood properties: county total and NFIP communities

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total001001004
of which: St. Louis County (unincorporated area)0030302
of which: Duluth city0030300
of which: Floodwood city0020200
of which: Proctor city0010101
of which: Midway township (community ID not in plan data)0010101

Repeat-flood properties by jurisdiction in the plan (NFIP community)

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
St. Louis County2704160030302
Aurora city2704170000000
Babbitt city2753040000000
Biwabik city2704180000000
Brookston city2704190000000
Buhl city2753320000000
Chisholm city2753330000000
Cook city2704200000000
Duluth city2704210030300
Ely city2705670000000
Eveleth city2704220000000
Floodwood city2704230020200
Gilbert city2753340000000
Hermantown city2707080000000
Hibbing city2705770000000
Hoyt Lakes city2705750000000
Iron Junction city2705800000000
Kinney city2753350000000
Leonidas city2709510000000
McKinley city2709520000000
Meadowlands city2709530000000
Mountain Iron city2704240000000
Orr city2706480000000
Proctor city2704250010101
Rice Lake city2707420000000
Tower city2706050000000
Virginia city2704260000000
Winton city2704270000000

Counts by occupancy group for each jurisdiction are in the Excel file, sheet "B2-c Jurisdictions".

Jurisdiction 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 jurisdiction row, while the county table counts only its part in this county.

County repeat-flood properties by occupancy group

Sources: 1, 4

Occupancy groupRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
single-family residential0080803
2 to 4 unit residential0010101
other residential0000000
non-residential0010100
not reported0000000

FEMA's occupancy groups have no institutional class; institutional properties are counted 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. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (FEMA's data date 2026-08-02; file version 2026-08-04). No property is identified. County assignment is FEMA's geocode.

In this county 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 10 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Tables cite these sources by number. The full list, for the plan's bibliography (FEMA review item A4-a):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, 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 2026-09-30, 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 2026-09-30, 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 2026-09-30, 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 2026-09-30, 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 (used to match place names and codes; no table prints its values)

What this packet is and what the plan adds

This packet is the federal data for the plan's risk assessment (the summary on page 1 says how it is organized); the plan and FEMA's review decide whether each item is met.

The plan adds what only the community has: local data on assets, critical facilities, development and each jurisdiction's impacts; local hazard history, including state-declared emergencies; the mitigation strategy; and adoption.

How the federal data are built: National Risk Index values are FEMA's model, not counts of events. Storm Events is more complete from 1996; zone-level records are placed by forecast zone, not by location in the county. Public Assistance for a jurisdiction is matched by applicant name. The Methods page gives every rule and the known edge cases.

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).

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). St. Louis County, MN: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 27137). Automated baseline. https://hazardplain.org/mn/27137/ 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: [email protected]