Hazard Plain Automated baseline

Coconino County, AZ

Risk-assessment baseline packet

County FIPS:
04005
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: No approved plan on record.

Update: FEMA tracker shows a plan in review.

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($85,662,580 a year), Wildfire ($28,503,633) and Lightning ($5,454,385).

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:
No approved plan on record
Plan:
none
Approved:
none
Expires:
none
Update underway:
FEMA tracker shows a plan in review

FEMA's plan status data lists no approved plan for this jurisdiction.

What changed since your last plan

Not available. No approved plan on record, so there is no approval date to count from.

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

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underway
Coconino CountyCountyNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Flagstaff cityCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Fredonia townTownNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Page cityCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Tusayan townTownNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Williams cityCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Northern Arizona UniversitySchool/School DistrictNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review

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

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 2026-06-30countStorm Events coverage note
1Inland FloodingRelatively HighRelatively High$63,475,176$54$22,187,350$85,662,580331
2WildfireRelatively HighRelatively High$27,486,245$93$1,017,296$28,503,63374
3LightningVery HighVery High$23,314n/a$5,431,071$5,454,38519
4EarthquakeRelatively ModerateRelatively Moderate$3,533,406n/a$1,205,411$4,738,817Storm Events does not record earthquakes.
5Cold WaveRelatively ModerateRelatively Moderate$12,199$711$3,192,437$3,205,34712
6Winter WeatherVery HighVery High$14,469under $1$1,182,790$1,197,260245
7Heat WaveRelatively LowRelatively Low$33$1,216$598,434$599,6838
8AvalancheRelatively ModerateRelatively Low$38n/a$456,667$456,7047
9LandslideRelatively ModerateRelatively Moderate$211,367n/a$97,857$309,2246
10HailRelatively LowRelatively Low$242,480$2$53,821$296,304150
11TornadoVery LowVery Low$173,342$684$121,830$295,85535
12Ice StormRelatively LowRelatively Low$260n/a$102,657$102,9163
13Strong WindVery LowVery Low$16,114$273$84,882$101,268202Includes 170 High Wind and 3 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
14DroughtVery LowVery Lown/a$10,659n/a$10,6597
15Volcanic ActivityRelatively LowRelatively Low$1,264n/a$1,594$2,8570No recorded events in Storm Events since 1996 (data through 2026-06-30).
16HurricaneNo RatingNo Expected Annual Losses$0$0$0$00No 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 volcanic activity records (Storm Events records this hazard only in part).

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: coastal flooding and tsunami. 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.

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
Avalanchetract 9450 (Relatively Low, 79.0); tract 9422.02 (Relatively Low, 79.0); tract 9451 (Relatively Low, 78.9)
Earthquaketract 10 (Relatively High, 88.6); tract 8 (Relatively Moderate, 85.8); tract 12.01 (Relatively Moderate, 83.4)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 15 (Relatively High, 99.7); tract 23.01 (Relatively High, 99.7); tract 20 (Relatively Moderate, 99.2)
Tornadotract 10 (Relatively Low, 38.2); tract 15 (Relatively Low, 33.5); tract 8 (Very Low, 28.9)
Volcanic Activitytract 13.01 (Relatively Low, 97.5); tract 13.02 (Relatively Low, 97.5); tract 5 (Relatively Low, 89.4)
Wildfiretract 15 (Very High, 100.0); tract 22.01 (Very High, 99.8); tract 23.02 (Very High, 99.7)

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 9450 is Census Tract 9450). 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
Avalanchenone (count and damage only)7 records, 2005 to 2022 (7 zone-level)No damage reported in 7 records.Countywide (zone-level records).
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill12 records, 2011 to 2023 (12 zone-level)1 day to 3 days (median 2 days); 11 with a recorded value3 consecutive days, 2020-10-25 to 2020-10-27, 2 direct deaths, zone-levelExtreme Cold/Wind Chill, 2011-01-01, $1,000,000 property; $0 crops (zone total, 2011 dollars)Countywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)7 records, 1999 to 2006 (7 zone-level)28 days to 122 days (median 31 days); 4 with a recorded value122 days (4 months), 2002-03-01 to 2002-06-30, a run of 4 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)177 records, 1962 to 20250.25 in to 3 in (median 1 in); 176 with a recorded value3 in hail, 1998-07-19Hail, 2011-09-12, $50,000 property; $0 crops (2011 dollars)Event records naming jurisdictions in the plan: Flagstaff city (37 records), Williams city (5 records), Tusayan town (2 records), Fredonia town (1 record), Page city (1 record).
Excessive Heat, Heatheat index (in event narratives)8 records, 2003 to 2017 (8 zone-level)1 day to 7 days (median 2.5 days); 4 with a recorded value7 consecutive days, 2017-06-18 to 2017-06-24, zone-levelCountywide (zone-level records).Heat records from November to March (unseasonable warmth, not a heat wave) are counted but not used for the longest run.
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)3 records, 2006 to 2021 (3 zone-level)Ice Storm, 2010-12-17, $100,000 property; $0 crops (2010 dollars); NWS zone AZZ015Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)331 records, 1996 to 2026 (4 zone-level)Flash Flood, 2008-08-16, $10,000,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: Flagstaff city (35 records), Page city (16 records), Williams city (7 records), Tusayan town (1 record). Zone-level records (4) 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)6 records, 2006 to 2011 (6 zone-level)No damage reported in 6 records.Countywide (zone-level records).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)19 records, 1997 to 2025Lightning, 2013-07-23, $0 property; $0 crops (2013 dollars), 2 direct deaths, 1 direct injuryLightning, 2023-07-31, $600,000 property; $0 crops (2023 dollars)Event records naming jurisdictions in the plan: Flagstaff city (2 records), Page 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)173 records, 1996 to 2026 (173 zone-level)35 kt (40 mph) to 99 kt (114 mph) (median 56 kt (64 mph)); 171 with a recorded value99 kt (114 mph) measured, High Wind, 2000-12-16; NWS zone AZZ015High Wind, 2009-03-22, $100,000 property; $0 crops (zone total, 2009 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)51 records, 1965 to 202447 kt (54 mph) to 72 kt (83 mph) (median 55 kt (63 mph)); 42 with a recorded value72 kt (83 mph) measured gust, Thunderstorm Wind, 2006-06-24Thunderstorm Wind, 2023-07-17, $100,000 property; $0 crops (2023 dollars)Event records naming jurisdictions in the plan: Flagstaff city (2 records), Page city (2 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)48 records, 1957 to 2024F/EF0 to F/EF3 (median F/EF0); 41 with a recorded valueEF3 tornado, 2010-10-06, 30.06 mi within this county, 800 yd wide, $400,000 property; $0 crops (2010 dollars)Tornado, 2010-10-06, $1,000,000 property; $0 crops (2010 dollars)Event records naming jurisdictions in the plan: Flagstaff 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).
Volcanic Ash, Volcanic AshfallVolcanic Explosivity Index (local data)0
Wildfireacres burned (local data)74 records, 1996 to 2022 (56 zone-level)Wildfire, 2018-04-28, $50,000,000 property; $0 crops (2018 dollars); NWS zone AZZ016Event records naming jurisdictions in the plan: Flagstaff city (6 records), Williams city (2 records). Zone-level records (56) apply countywide.
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)245 records, 1996 to 2026 (245 zone-level)Winter Storm, 2010-01-20, $1,000,000 property; $0 crops (2010 dollars); NWS zone AZZ015Countywide (zone-level records).

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

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: 24 declarations covering 20 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

No approved plan on record, so there is no approval date to count from.

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2022-06-122022-06-12FM-5441-AZFire managementPipeline FireWildfireno Public Assistance recordedwithin last 5 years
2022-04-192022-04-19FM-5434-AZFire managementTunnel 2 FireWildfireno Public Assistance recordedwithin last 5 years
2021-09-132021-07-22DR-4620-AZMajor disasterSevere Storms and FloodingInland Flooding$70,669.54
2020-04-042020-01-20DR-4524-AZMajor disasterCOVID-19 PandemicNon-natural, not counted$16,917,196.42
2020-03-132020-01-20EM-3442-AZEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4524
2019-07-222019-07-22FM-5284-AZFire managementMuseum FireWildfireno Public Assistance recorded
2018-04-292018-04-27FM-5236-AZFire managementTinder FireWildfireno Public Assistance recorded
2014-11-062014-05-20FM-5083-AZFire managementSlide FireWildfireno Public Assistance recorded
2010-10-042010-07-20DR-1940-AZMajor disasterSevere Storms and FloodingInland Flooding$6,082,205.47
2010-06-202010-06-20FM-2846-AZFire managementShultz FireWildfireno Public Assistance recorded
2010-06-192010-06-19FM-2845-AZFire managementHardy FireWildfireno Public Assistance recorded
2010-03-182010-01-18DR-1888-AZMajor disasterSevere Winter Storms and FloodingInland Flooding; Winter Weather$305,869.18
2010-01-242010-01-20EM-3307-AZEmergencySevere Winter StormWinter Weatherno Public Assistance recordedsame incident as DR-1888
2009-10-032009-10-02FM-2840-AZFire managementTwin FireWildfireno Public Assistance recorded
2006-06-182006-06-18FM-2645-AZFire managementBrins FireWildfireno Public Assistance recorded
2006-06-142006-06-14FM-2643-AZFire managementWoody FireWildfireno Public Assistance recorded
2005-09-122005-08-29EM-3241-AZEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2005-02-172004-12-28DR-1581-AZMajor disasterSevere Storms and FloodingInland Flooding$1,800,264.95
2002-06-252002-06-18DR-1422-AZMajor disasterWildfiresWildfirePA not declared for this county
1993-01-191993-01-05DR-977-AZMajor disasterSevere Storms, Tornadoes & FloodingInland Flooding (primary); also designated: Tornadono Public Assistance recorded
1990-12-061990-07-08DR-884-AZMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1978-03-041978-03-04DR-551-AZMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1977-04-151977-04-15EM-3038-AZEmergencyDroughtDroughtno Public Assistance recorded
1970-09-221970-09-22DR-294-AZMajor disasterHeavy Rains & FlashInland 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
2000-10-272000-10-21DR-1347-AZMajor disasterSevere Storms and FloodingInland 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.

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.

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
Avalanche7101996 to 2026-06-30
Cold Wave12301996 to 2026-06-30
Drought7011996 to 2026-06-30
Earthquake000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail177901955 to 2026-06-30
Heat Wave8001996 to 2026-06-30
Hurricane0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3101996 to 2026-06-30
Inland Flooding3319781996 to 2026-06-30
Landslide6001996 to 2026-06-30
Lightning19301996 to 2026-06-30
Strong Wind2244601955 to 2026-06-30Includes 170 High Wind and 3 Strong Wind records.
Tornado48511950 to 2026-06-30
Volcanic Activity0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire744111996 to 2026-06-30
Winter Weather2454611996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationWhy listed
2020-10-25Extreme Cold/Wind Chill$0 property; $0 crops (zone total, 2020 dollars)2, 0NWS zone AZZ015 (WESTERN MOGOLLON RIM), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2018-04-28Wildfire$50,000,000 property; $0 crops (zone total, 2018 dollars)0, 0NWS zone AZZ016 (EASTERN MOGOLLON RIM), zone-levelB1-c worst recorded: Wildfire
2017-06-18Excessive Heat$0 property; $0 crops (zone total, 2017 dollars)0, 0NWS zone AZZ015 (WESTERN MOGOLLON RIM), zone-levelB1-c worst recorded: Excessive Heat, Heat
2013-07-23Lightning$0 property; $0 crops (2013 dollars)2, 1JACOB LAKEdeaths or injuries recorded
2010-12-17Ice Storm$100,000 property; $0 crops (zone total, 2010 dollars)0, 0NWS zone AZZ015 (WESTERN MOGOLLON RIM), zone-levelB1-c worst recorded: Ice Storm
2010-10-06TornadoEF3, 30.06 mi within this county, 800 yd wide$400,000 property; $0 crops (2010 dollars)0, 0KACHINA VILLAGE to BELLEMONTB1-c worst recorded: Tornado
2010-01-20Winter Storm$1,000,000 property; $0 crops (zone total, 2010 dollars)0, 0NWS zone AZZ015 (WESTERN MOGOLLON RIM), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2008-08-16Flash Flood$10,000,000 property; $0 crops (2008 dollars)0, 0HAVASUPAIB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2001-08-11Flash Flooddamage not reported3, 0SUPAIdeaths or injuries recorded
2000-12-16High Wind99 kt (114 mph) measureddamage not reported0, 0NWS zone AZZ015 (WESTERN MOGOLLON RIM), zone-levelB1-c worst recorded: High Wind and Strong Wind
1998-07-19Hail3 in$46,800 property; $0 crops (1998 dollars)0, 0FLAGSTAFFB1-c worst recorded: Hail
1997-08-12Flash Flood$0 property; $0 crops (1997 dollars)11, 1PAGEdeaths or injuries recorded

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,161 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
Avalanche0.0333events per yearabout 1 in 30 yearsPossibleFEMA annualized frequency (modeled)11994 to 2023 (30 years)see B1-f
Cold Wave0.0315event-days per yearabout 0.0315 days per yearLikelyStorm Events event-days in 8 of 30 years, 1996 to 2025 (26.7%)0.5972005-11-12 to 2024-11-12 (19 years)countywide
Drought96.5event-days per yearabout 96.5 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)4,1372000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00272annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.272%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail0.213events per yearabout 1 in 5 yearsLikelyFEMA annualized frequency (modeled)8.1 (modeled)1986 to 2023 (38 years)countywide
Heat Wave1.47event-days per yearabout 1.47 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)15.82005-11-12 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 in B1-d.
Ice Storm0.0149event-days per yearabout 0.0149 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)01946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding8.04event-days per yearabout 8.04 days per yearHighly likelyStorm Events event-days in 29 of 30 years, 1996 to 2025 (96.7%)2251996 to 2023 (28 years)see B1-f
Landslide5.52events per year (modeled)about 5.52 per yearHighly likelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning44.4days per year with a strikeabout 44.4 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.0677events per yearabout 1 in 15 yearsPossibleFEMA annualized frequency (modeled)31986 to 2023 (38 years)countywide
Tornado0.813events per yearabout 0.81 per yearLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Volcanic Activity0.0003annual probabilityabout 1 in 3,333 yearsUnlikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Wildfire0.0112annual probability at a locationchance a given location in the county burns in a year: 1.12%LikelyStorm Events records in 20 of 30 years, 1996 to 2025 (66.7%)not shownmodeledsee B1-f
Winter Weather8.2event-days per yearabout 8.2 days per yearHighly likelyStorm Events event-days in 30 of 30 years, 1996 to 2025 (100%)1562005-11-12 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 202589302.97
Hail2.00 in+1996 to 20257300.233
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 202522300.733
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20253300.1
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20254300.133
TornadoEF0-11996 to 202528300.933
TornadoEF2-31996 to 20257300.233
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
Avalanche18 of 3973.877.179.0Relatively Low 18, Not Applicable 21
Cold Wave32 of 3915.569.493.0Relatively High 2, Relatively Moderate 24, Relatively Low 2, Very Low 4, No Rating 7
Drought1 of 3989.589.589.5Relatively Low 1, No Rating 38
Earthquake38 of 390.371.188.6Relatively High 1, Relatively Moderate 9, Relatively Low 25, Very Low 3, No Rating 1
Hail38 of 390.252.177.4Relatively Moderate 2, Relatively Low 28, Very Low 8, No Rating 1
Heat Wave38 of 391.316.083.5Relatively Moderate 3, Relatively Low 15, Very Low 20, No Rating 1
Hurricane0 of 39No Rating 39
Ice Storm38 of 390.037.468.6Relatively Low 25, Very Low 13, No Rating 1
Inland Flooding38 of 390.190.4100.0Very High 9, Relatively High 17, Relatively Moderate 9, Relatively Low 1, Very Low 2, No Rating 1
Landslide38 of 399.278.699.7Relatively High 2, Relatively Moderate 9, Relatively Low 7, Very Low 20, No Rating 1
Lightning38 of 390.199.5100.0Very High 34, Relatively High 2, Very Low 2, No Rating 1
Strong Wind38 of 390.215.141.0Relatively Low 6, Very Low 32, No Rating 1
Tornado38 of 390.219.238.2Relatively Low 2, Very Low 36, No Rating 1
Volcanic Activity38 of 3940.062.597.5Relatively Low 5, Very Low 33, No Rating 1
Wildfire38 of 3951.996.2100.0Very High 5, Relatively High 14, Relatively Moderate 10, Relatively Low 7, Very Low 2, No Rating 1
Winter Weather38 of 3910.695.999.9Very High 19, Relatively High 14, Relatively Moderate 3, Very Low 2, No Rating 1

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
Coconino CountyCountyNo approved plan on recordFMA RL 1, SRL 1; any 6$6,441,200.180 total; no approved planIncludes $1,426,364.73 for declarations not counted as hazard incidents (DR-4524-AZ).
Flagstaff cityCityNo approved plan on recordFMA RL 0, SRL 0; any 5$2,955,355.5883 total; no approved planIncludes $158,511.39 for declarations not counted as hazard incidents (DR-4524-AZ).
Fredonia townTownNo approved plan on recordFMA RL 0, SRL 0; any 0no Public Assistance recorded1 total; no approved plan
Page cityCityNo approved plan on recordFMA RL 0, SRL 0; any 0$61,922.0620 total; no approved planIncludes $61,922.06 for declarations not counted as hazard incidents (DR-4524-AZ).
Tusayan townTownNo approved plan on recordFMA RL 0, SRL 0; any 0$46,597.433 total; no approved planIncludes $46,597.43 for declarations not counted as hazard incidents (DR-4524-AZ).
Williams cityCityNo approved plan on recordFMA RL 0, SRL 0; any 0$114,667.6414 total; no approved planIncludes $3,938.68 for declarations not counted as hazard incidents (DR-4524-AZ).

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

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

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.

No approved plan on record, so there is no approval date to count from.

  • 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 plancounty-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$22,494,776n/a5$38n/a$456,6670.000168%
Cold Wave$26,087,198,134$27,613,246111,794$12,199$711$3,192,437under 0.0001%
Droughtn/a$741,029n/an/a$10,659n/a1.44% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$57,020,015,035n/a145,101$3,533,406n/a$1,205,4110.0062%
Hail$32,779,609,245$30,782,819144,629$242,480$2$53,8210.00074%
Heat Wave$32,779,609,245$30,782,819144,629$33$1,216$598,434under 0.0001%
Hurricane$32,779,609,245$30,782,819144,629$0$0$00%
Ice Storm$32,779,609,245n/a144,629$260n/a$102,657under 0.0001%
Inland Flooding$32,770,110,247$94,7417,222$63,475,176$54$22,187,350n/a (see note)NRI 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$792,174,959n/a2,591$211,367n/a$97,8570.0267%
Lightning$32,779,609,245n/a144,629$23,314n/a$5,431,071under 0.0001%
Strong Wind$32,779,609,245$30,782,819144,629$16,114$273$84,882under 0.0001%
Tornado$32,779,609,245$30,782,819144,629$173,342$684$121,8300.000529%
Volcanic Activity$32,779,609,245n/a144,629$1,264n/a$1,594under 0.0001%
Wildfire$8,387,503,270$26,738,45843,262$27,486,245$93$1,017,2960.328%
Winter Weather$32,779,609,245$30,782,819144,629$14,469under $1$1,182,790under 0.0001%

Totals since the plan: not available. No approved plan on record, so there is no approval date to count from.

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
Population144,629
Building value (total, not at risk)$32,779,609,245
Agriculture value (total, not at risk)$30,782,819
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$95,203,398
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)$35,734,096
Social vulnerability ratingRelatively Moderate
Community resilience ratingRelatively Moderate
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)1Severe repetitive loss, FMA definition (44 CFR 77.2)2
Repetitive loss, NFIP insurance definition21Severe repetitive loss, NFIP insurance definition2

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

Repeat-flood properties: county and state-level rows

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total122122209
of which: Coconino County (unincorporated area)1151602
of which: Flagstaff city0050501
of which: Sedona city (plan jurisdiction listed on the Yavapai County page)011111106
Statewide, no county in FEMA's file0100110

11 of the county's repeat-flood properties belong to NFIP communities whose plan jurisdiction is not listed on this page (the community rows above name the page that lists it).

The statewide row counts properties FEMA's file gives with no county in this state; they are listed for reference and are not in this county's counts.

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

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Coconino County0400191151602
Flagstaff city0400200050501
Fredonia town0400210000000
Page city0401130000000
Tusayan town0401390000000
Williams city0400270000000

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 residential111611706
2 to 4 unit residential0000000
other residential0000000
non-residential0151503
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 1 property is FMA repetitive loss but not NFIP repetitive loss, and 21 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). Coconino County, AZ: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 04005). Automated baseline. https://hazardplain.org/az/04005/ 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]