Hazard Plain Preview: automated baseline

Navajo County, AZ

Risk-assessment baseline packet

Unit
County area 04017
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 2030-06-25
Plan
Navajo County (FEMA plan 108223)
Approved
2025-06-26
Expires
2030-06-25
As of
2026-09-28
Days
1,366 days to expiry

What changed since your last plan (approved 2025-06-26)

New federal declarations
none (0 declaration rows; 0 counted incidents)
Storm Events records since approval
12 (data through 2026-06-30)
Repetitive loss now
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 5
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
Navajo CountyCountyApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366
Holbrook cityCityApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04
Pinetop-Lakeside townTownApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04
Show Low cityCityApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04
Snowflake townTownApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04
Taylor townTownApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04
Winslow cityCityApproved, expires 2030-06-25Navajo County (FEMA plan 108223)2025-06-262030-06-251,366member approved 2025-08-04

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 FloodingRelatively ModerateRelatively Moderate$19,786,923$12,540$665,626$20,465,090142
2WildfireRelatively HighRelatively High$11,714,378$76$619,235$12,333,68941
3LightningVery HighVery High$6,121$3,427,571$3,433,6925
4Cold WaveRelatively ModerateRelatively Moderate$3,586$217$1,350,891$1,354,6936
5EarthquakeRelatively LowRelatively Low$824,913$197,429$1,022,342Not in Storm Events. Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
6Winter WeatherVery HighRelatively High$6,666under $1$515,372$522,038167
7Heat WaveRelatively LowRelatively Low$67$2,000$279,272$281,3396
8Strong WindRelatively LowRelatively Low$11,403$11$219,143$230,556178Includes 155 High Wind records and 1 Strong Wind record, event types the NRI definition of this hazard leaves out.
9DroughtRelatively LowRelatively Low$92,239$92,2390Declared 1 time; no Storm Events record of this type.
10Ice StormRelatively ModerateRelatively Low$154$85,755$85,9091
11HailRelatively LowVery Low$60,665$1,204$18,138$80,00653
12LandslideRelatively ModerateRelatively Low$28,305$28,392$56,6971
13TornadoVery LowVery Low$12,503$390$11,939$24,83220
14AvalancheVery LowVery Low$3$322$3252
15Volcanic ActivityVery LowVery Lowunder $1$9$90No 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.
16HurricaneNo RatingNo Expected Annual Losses$0$0$0$00No 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.

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.12 of 37
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 37
Cold WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.30 of 37
DroughtAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.1 of 37
EarthquakeCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.37 of 37
HailAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37
Heat WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37
HurricaneCensus 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 37
Ice StormAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37
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.37 of 37
LandslideCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.37 of 37
LightningAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37
Strong WindAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37
TornadoCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.37 of 37
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 37
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.14 of 37
WildfireCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.37 of 37
Winter WeatherAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.37 of 37

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)2, 2019 to 2022 (2 zone-level)No damage reported in 2 records.Zone-level records: applies countywide; national data do not locate these events within the county.Physical 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, 2011 to 2022 (6 zone-level)2 days to 6 days (median 3 days); 5 with a recorded value6 consecutive days, 2011-01-01 to 2011-01-06, zone-levelZone-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-scale0Storm 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)58, 1955 to 20240.75 in to 2.75 in (median 1 in); 58 with a recorded value2.75 in hail, 2018-09-01Event records naming member places: Snowflake town (5 records), Show Low city (3 records), Winslow city (3 records), Holbrook city (2 records).
Excessive Heat, Heatheat index (narratives)6, 2013 to 2017 (6 zone-level)2 days to 8 days (median 3 days); 3 with a recorded value8 consecutive days, 2017-06-17 to 2017-06-24, 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-Simpson0Storm 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)1, 2006 to 2006 (1 zone-level)No damage reported in 1 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)142, 1996 to 2025 (1 zone-level)Flood, 2004-12-28, $66,000 property; crops not reported, reported for the zone (2004 dollars); NWS zone AZZ016 (EASTERN MOGOLLON RIM), zone-level: may include parts of neighboring countiesEvent records naming member places: Holbrook city (9 records), Snowflake town (8 records), Taylor town (6 records), Show Low city (4 records), Winslow city (2 records). Zone-level records (1) apply countywide.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)1, 2010 to 2010 (1 zone-level)No damage reported in 1 records.Zone-level records: applies countywide; national data do not locate these events within the county.Physical measure: in event narratives only; local data required.
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)5, 2004 to 2013Lightning, 2009-09-20, $0 property; $0 crops (2009 dollars), 1 direct death, 3 direct injuriesLightning, 2007-09-02, $50,000 property; $0 crops (2007 dollars)Event records naming member places: Show Low city (2 records), Holbrook city (1 record), Winslow city (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)156, 1996 to 2026 (156 zone-level)35 kt (40 mph) to 87 kt (100 mph) (median 56 kt (64 mph)); 155 with a recorded value87 kt (100 mph), measurement type not recorded, High Wind, 1999-03-31, 17 direct injuries (reported for the zone); NWS zone AZZ040 (NORTHEAST PLATEAUS AND MESAS SOUTH OF HIGHWAY 264), zone-level: may include parts of neighboring countiesHigh Wind, 2010-04-28, $100,000 property; $0 crops, reported for the zone (2010 dollars)Zone-level records: applies countywide; national data do not locate these events within the county.
Thunderstorm Windwind speed (kt and mph)32, 1962 to 202545 kt (52 mph) to 65 kt (75 mph) (median 52 kt (60 mph)); 30 with a recorded value65 kt (75 mph) measured gust, Thunderstorm Wind, 2006-07-26Thunderstorm Wind, 1997-04-23, $6,000 property; $0 crops (1997 dollars)Event records naming member places: Winslow city (4 records), Snowflake town (1 record).
TornadoEnhanced Fujita (F before Feb 2007)23, 1960 to 2025F/EF0; 21 with a recorded valueF0 tornado, 2005-10-18, 30 mi within this county, 100 yd wide, $10,000 property; crops not reported (2005 dollars)Event records naming member places: Holbrook city (4 records), Snowflake town (3 records), Winslow city (2 records).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)41, 1996 to 2021 (35 zone-level)Wildfire, 2011-06-01, $58,000,000 property; $0 crops, reported for the zone (2011 dollars); NWS zone AZZ017 (WHITE MOUNTAINS), zone-level: may include parts of neighboring countiesNo event record names a member place. Zone-level records (35) apply countywide.Acres burned: in event narratives only; local data required.
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall local)167, 1996 to 2026 (167 zone-level)No damage reported in 167 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
21
Counted incidents
15

Federal disaster declarations for this county

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2021-09-132021-07-22DR-4620-AZMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$371,662.73
2020-04-042020-01-20DR-4524-AZMajor disasterCOVID-19 PANDEMICNon-natural, not counted$568,241.66
2020-03-132020-01-20EM-3442-AZEmergencyCOVID-19Non-natural, not countednone foundsame incident as DR-4524
2010-03-182010-01-18DR-1888-AZMajor disasterSEVERE WINTER STORMS AND FLOODINGInland Flooding; Winter Weather$994,045.83
2010-01-242010-01-20EM-3307-AZEmergencySEVERE WINTER STORMWinter Weathernone foundsame incident as DR-1888
2006-09-072006-07-25DR-1660-AZMajor disasterSEVERE STORMS AND FLOODINGInland Floodingnone found
2006-06-132006-06-12FM-2642-AZFire managementPOTATO FIREWildfirenone found
2005-09-122005-08-29EM-3241-AZEmergencyHURRICANE KATRINA EVACUATIONHurricane: evacuation support, not a local hazard event; not countednone found
2005-02-172004-12-28DR-1581-AZMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$441,213.67
2003-07-142003-07-13FM-2478-AZFire managementKINISHBA FIREWildfirenone found
2002-06-252002-06-18DR-1422-AZMajor disasterWILDFIRESWildfire$890,203.66
2002-06-212002-06-20FM-2430-AZFire managementAZ - CHEDISKI FARMS FIRE - 06/21/2002Wildfirenone foundsame incident as DR-1422
2002-06-192002-06-18FM-2429-AZFire managementRODEO FIREWildfirenone foundsame incident as DR-1422
1999-06-121999-06-11FM-2263-AZFire managementAZ - RAINBOW FIRE - 06/11/1999Wildfirenone found
1993-01-191993-01-05DR-977-AZMajor disasterSEVERE STORMS, TORNADOES & FLOODINGInland Flooding (primary); also designated: Tornadonone found
1983-10-051983-09-23DR-691-AZMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found
1980-02-191980-02-19DR-614-AZMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found
1978-12-211978-12-21DR-570-AZMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found
1978-03-041978-03-04DR-551-AZMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found
1977-04-151977-04-15EM-3038-AZEmergencyDROUGHTDroughtnone found
1970-09-221970-09-22DR-294-AZMajor disasterHEAVY RAINS & FLASHInland 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
2000-10-272000-10-21DR-1347-AZMajor disasterSEVERE STORMS AND FLOODINGInland Flooding

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

15 Fire Management declarations (1990-06-27 to 1996-06-24) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

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
Avalanche2001001996 to 2026-06-30
Coastal Flooding0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave6002001996 to 2026-06-30
Drought0000101996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Earthquake000000No Storm Events record; local data required (e.g., USGS).
Hail58024001955 to 2026-06-30
Heat Wave6000001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm1000001996 to 2026-06-30
Inland Flooding14251261001996 to 2026-06-30
Landslide1000001996 to 2026-06-30
Lightning5000001996 to 2026-06-30
Strong Wind18831048001955 to 2026-06-30Includes 155 High Wind records and 1 Strong Wind record, event types the NRI definition of this hazard leaves out.
Tornado23114101950 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
Wildfire41000401996 to 2026-06-30
Winter Weather1673437101996 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
2023-03-22Flood$0 property; $0 crops (2023 dollars)1, 0ZENIFF to HEBERwithin last 5 yearsdeaths or injuries recorded
2018-09-01Hail2.75 in$0 property; $0 crops (2018 dollars)0, 0SUN VLY to HOLBROOKB1-c worst recorded: Hail
2011-06-01Wildfire$58,000,000 property; $0 crops, reported for the zone (2011 dollars)0, 0NWS zone AZZ017 (WHITE MOUNTAINS), zone-level: may include parts of neighboring countiesB1-c worst recorded: Wildfire
2011-01-01Extreme Cold/Wind Chill$50,000 property; $0 crops, reported for the zone (2011 dollars)0, 0NWS zone AZZ017 (WHITE MOUNTAINS), zone-level: may include parts of neighboring countiesB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2010-04-28High Wind70 kt (81 mph) measured gust$100,000 property; $0 crops, reported for the zone (2010 dollars)0, 0NWS zone AZZ013 (LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY), zone-level: may include parts of neighboring countiesB1-c most damaging: High Wind and Strong Wind (outside NRI Strong Wind definition)
2009-09-20Lightning$0 property; $0 crops (2009 dollars)1, 3CLAY SPGSdeaths or injuries recorded
2007-09-02Lightning$50,000 property; $0 crops (2007 dollars)0, 0WINSLOWB1-c most damaging: Lightning
2006-07-26Thunderstorm Wind65 kt (75 mph) measured gustdamage not reported0, 0SHOW LOW MUNI ARPTB1-c worst recorded: Thunderstorm Wind
2005-10-18TornadoF0, 30 mi within this county, 100 yd wide$10,000 property; crops not reported (2005 dollars)0, 0KYKOTSMOVIB1-c worst recorded: Tornado
2004-12-28Flood$66,000 property; crops not reported, reported for the zone (2004 dollars)0, 0NWS zone AZZ016 (EASTERN MOGOLLON RIM), zone-level: may include parts of neighboring countiesB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
1999-03-31High Wind87 kt (100 mph), measurement type not recorded$2,000 property; $0 crops, reported for the zone (1999 dollars)0, 17NWS zone AZZ040 (NORTHEAST PLATEAUS AND MESAS SOUTH OF HIGHWAY 264), zone-level: may include parts of neighboring countiesB1-c worst recorded: High Wind and Strong Wind (outside NRI Strong Wind definition)
1999-03-31High Wind81 kt (93 mph), measurement type not recorded$25,000 property; $0 crops, reported for the zone (1999 dollars)2, 0NWS zone AZZ013 (LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY), zone-level: may include parts of neighboring countiesdeaths or injuries recorded

The full list is in the XLSX file, sheet "B1-d Storm Events history" (640 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
Avalanche0.01events per yearabout 1 in 100 yearsPossibleFEMA annualized frequency (modeled)01994 to 2023 (30 years)see B1-f0.01 is NRI's minimum avalanche frequency for a county in an avalanche susceptibility zone; NRI records no avalanche here, so the descriptor reflects the floor, not local events.
Coastal Floodingevents per year at a location (modeled)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Cold Wave0.0171event-days per yearabout 0.0171 days per yearLikelyevent-days in 3 of 30 years, 1996 to 2025 (10%)0.3252005-11-12 to 2024-11-12 (19 years)countywideFrost/Freeze records are not counted in this descriptor: they record crop freezes, not cold waves.
Drought103event-days per yearabout 103 days per yearevent-days in 0 of 30 years, 1996 to 2025 (0%)4,7322000 to 2025 (25.25 years; D3 and D4 only)countywideNo recorded event-days, 1996 to 2025; descriptor not assigned
Earthquake0.00175annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.175%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.
Hail0.109events per yearabout 1 in 9 yearsLikelyFEMA annualized frequency (modeled)4.1 (modeled)1986 to 2023 (38 years)countywide
Heat Wave0.771event-days per yearabout 0.771 days per yearPossibleevent-days in 2 of 30 years, 1996 to 2025 (6.67%)13.12005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0events per yearnone modeledUnlikelyFEMA annualized frequency (modeled)01851 to 2024 (Atlantic); 1949 to 2024 (Pacific)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 Storm0.0149event-days per yearabout 0.0149 days per yearPossibleevent-days in 1 of 30 years, 1996 to 2025 (3.33%)01946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding4.14event-days per yearabout 4.14 days per yearLikelyevent-days in 26 of 30 years, 1996 to 2025 (86.7%)1161996 to 2023 (28 years)see B1-f
Landslide2.54events per year (modeled)about 2.54 per yearHighly likelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning47.6days per year with a strikeabout 47.6 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.0552events per yearabout 1 in 18 yearsPossibleFEMA annualized frequency (modeled)31986 to 2023 (38 years)countywide
Tornado0.395events 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)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Volcanic Activity0.0002annual probabilityabout 1 in 5,000 yearsUnlikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Wildfire0.00444annual probability at a locationchance a given location in the county burns in a year: 0.444%LikelyStorm Events records in 18 of 30 years, 1996 to 2025 (60%)not shownmodeledsee B1-fDescriptor from Storm Events, not NRI: the NRI value is the chance at a location in the county, not how often the hazard affects the county.
Winter Weather5.79event-days per yearabout 5.79 days per yearHighly likelyevent-days in 30 of 30 years, 1996 to 2025 (100%)1102005-11-12 to 2024-11-12 (19 years)countywide

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 202529300.967
Hail2.00 in+1996 to 20252300.0667
Strong Wind (Thunderstorm Wind records)50-64 kt1996 to 202518300.6
Strong Wind (Thunderstorm Wind records)65 kt+1996 to 20251300.0333
Strong Wind (Thunderstorm Wind records)unmeasured or below 50 kt1996 to 20253300.1
TornadoEF0-11996 to 202520300.667
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

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
Avalanche12 of 3731.738.138.3Very Low 12, Not Applicable 25
Coastal Flooding0 of 37Not Applicable 37
Cold Wave30 of 3715.849.885.3Relatively High 2, Relatively Moderate 14, Relatively Low 9, Very Low 5, No Rating 7National 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.
Drought1 of 3796.896.896.8Relatively Moderate 1, No Rating 36National 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.
Earthquake37 of 3719.445.980.7Relatively Moderate 1, Relatively Low 24, Very Low 12
Hail37 of 378.633.761.4Relatively Low 12, Very Low 25National 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 Wave37 of 373.812.538.6Relatively Low 11, Very Low 26National 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.
Hurricane0 of 37No Rating 37
Ice Storm37 of 3713.238.758.4Relatively Low 24, Very Low 13National 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 Flooding37 of 3713.849.695.4Relatively High 7, Relatively Moderate 12, Relatively Low 16, Very Low 2
Landslide37 of 3721.881.999.2Relatively Moderate 5, Relatively Low 14, Very Low 18
Lightning37 of 3792.498.999.9Very High 31, Relatively High 6National 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 Wind37 of 373.227.668.8Relatively Moderate 3, Relatively Low 21, Very Low 13National 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.
Tornado37 of 370.41.724.2Very Low 37
Tsunami0 of 37Not Applicable 37
Volcanic Activity14 of 3740.164.274.8Very Low 14, No Rating 23
Wildfire37 of 3759.891.899.6Very High 4, Relatively High 12, Relatively Moderate 6, Relatively Low 9, Very Low 6
Winter Weather37 of 3763.789.399.2Very High 8, Relatively High 22, Relatively Moderate 7National 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
Navajo CountyCountyApproved, expires 2030-06-25FMA RL 0, SRL 0; any 1$1,891,942.170; 0Includes $449,850.38 for declarations not counted as hazard incidents (DR-4524-AZ).
Holbrook cityCityApproved, expires 2030-06-25FMA RL 0, SRL 0; any 0none found16; 0
Pinetop-Lakeside townTownApproved, expires 2030-06-25FMA RL 0, SRL 0; any 0none found0; 0
Show Low cityCityApproved, expires 2030-06-25FMA RL 0, SRL 0; any 0$46,175.429; 0Includes $46,175.42 for declarations not counted as hazard incidents (DR-4524-AZ).
Snowflake townTownApproved, expires 2030-06-25FMA RL 0, SRL 0; any 1$231,651.8417; 0
Taylor townTownApproved, expires 2030-06-25FMA RL 0, SRL 0; any 1$238,396.656; 0
Winslow cityCityApproved, expires 2030-06-25FMA RL 0, SRL 0; any 2$93,307.8012; 1Includes $37,432.80 for declarations not counted as hazard incidents (DR-4524-AZ).

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 2025-06-26county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$5,523,2331$3$322under 0.0001%
Coastal FloodingNot Applicable in NRI for this county
Cold Wave$11,634,532,703$8,292,29250,399$3,586$217$1,350,891under 0.0001%
Drought$4,342,960$92,2392.12% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$36,030,124,978106,717$824,913$197,4290.00229%
Hail$21,221,037,189$64,271,407106,501$60,665$1,204$18,1380.000286%
Heat Wave$21,221,037,189$64,271,407106,501$67$2,000$279,272under 0.0001%
Hurricane$21,221,037,189$64,271,407106,501$0$0$00%
Ice Storm$21,221,037,189106,501$154$85,755under 0.0001%
Inland Flooding$21,214,278,548$29,418,5205,165$19,786,923$12,540$665,626n/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$293,504,6631,336$28,305$28,3920.00964%
Lightning$21,221,037,189106,501$6,121$3,427,571under 0.0001%
Strong Wind$21,221,037,189$64,271,407106,501$11,403$11$219,143under 0.0001%$0$0
Tornado$21,221,037,189$64,271,407106,501$12,503$390$11,939under 0.0001%$0
TsunamiNot Applicable in NRI for this county
Volcanic Activity$21,221,037,189106,501under $1$9under 0.0001%
Wildfire$7,704,347,752$33,025,33149,774$11,714,378$76$619,2350.152%
Winter Weather$21,221,037,189$64,271,407106,501$6,666under $1$515,372under 0.0001%$0

Totals since 2025-06-26 (Storm Events through 2026-06-30): 7 county-coded records, 7 with a damage value recorded (including $0), $0; 5 zone-level records, 5 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance on counted declarations none found (0 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
Population106,501
Building value (total, not at risk)$21,221,037,189
Agriculture value (total, not at risk)$64,271,407
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$32,564,364
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)$7,419,095
Social vulnerability ratingVery High
Community resilience ratingVery Low
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)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition5Severe repetitive loss, NFIP insurance definition0

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 total0050501
NAVAJO COUNTY *0010100
SNOWFLAKE, TOWN OF0010100
TAYLOR, TOWN OF0010100
WINSLOW, CITY OF0020201
State level, not in this county: county not reported0100110

Repeat-flood properties by plan member (NFIP community)

MemberNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredpropertiesNote
Navajo County0400660010100
Holbrook city0400670000000
Pinetop-Lakeside town0401270000000
Show Low city0400690000000
Snowflake town0400700010100
Taylor town0400710010100
Winslow city0400720020201

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 residential0050501
2 to 4 unit residential0000000
other residential0000000
non-residential0000000
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 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 5 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). Navajo County, AZ: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-28; County area 04017). 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.

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Hazard Plain release 2026-10. As of 2026-09-28; Storm Events data through 2026-06-30. File hazard-plain_2026-10_AZ_04017. Preview: automated baseline.