Hazard Plain Automated baseline

Sevier County, UT

Risk-assessment baseline packet

County FIPS:
49041
Release:
2026-10
Data as of:
2026-09-30
Storm Events data through:
2026-06-30

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

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

Summary

Plan status as of 2026-09-30: Expired on 2026-01-04. Plan: Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879), approved 2021-01-05.

Since the plan was approved on 2021-01-05: 1 new hazard declaration (1 incident) and 63 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Earthquake ($4,238,341 a year), Inland Flooding ($3,368,049) and Avalanche ($690,952).

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

Plan clock

Status:
Expired on 2026-01-04
Plan:
Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)
Approved:
2021-01-05
Days since expiry:
269
Update underway:
none recorded in FEMA's plan tracker

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

What changed since your last plan (approved 2021-01-05)

New federal declarations:
1 new hazard declaration (1 incident): FM-5600-UT (Monroe Canyon Fire)
Storm Events records since approval:
63 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 0
Repeat-flood change:
this release sets the baseline count.

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

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiry
Sevier CountyCountyExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Annabella townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Central Valley townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Elsinore townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Glenwood townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Joseph townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Monroe cityCityExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Richfield cityCityExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Salina cityCityExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269
Sigurd townTownExpired on 2026-01-04Six County AOG, UT Hazard Mitigation Plan 2021 (FEMA plan 106879)2021-01-052026-01-04-269

Plan 106879 lists 23 other participants, named in the Excel file.

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 2026-06-30countWhy this hazard can be left outNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1EarthquakeRelatively LowRelatively Moderate$2,535,013n/a$1,703,328$4,238,341Storm Events does not record earthquakes.
2Inland FloodingVery LowVery Low$3,315,365$34$52,650$3,368,04917
3AvalancheRelatively ModerateRelatively Low$1n/a$690,951$690,9525
4LightningRelatively ModerateRelatively Moderate$4,326n/a$652,788$657,1142
5WildfireRelatively LowRelatively Low$430,115$353$21,682$452,1504
6DroughtRelatively LowRelatively Lown/a$229,472n/a$229,4720Declared 1 time; no Storm Events record of this type.
7Winter WeatherRelatively ModerateRelatively Moderate$33,602$185$130,418$164,205135
8Heat WaveVery LowVery Low$28$4,842$146,645$151,5153
9Strong WindVery LowVery Low$8,746$751$56,908$66,40578Includes 47 High Wind and 1 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
10TornadoVery LowVery Low$12,987$192$14,545$27,7240No recorded events in Storm Events since 1996 (data through 2026-06-30).
11LandslideRelatively LowRelatively Low$6,988n/a$12,538$19,5270Declared 2 times; no Storm Events record of this type.
12Ice StormVery LowVery Low$4,275n/a$1,464$5,7390No recorded events in Storm Events since 1996 (data through 2026-06-30).
13HailVery LowVery Low$601$132$1,298$2,0311
14Volcanic ActivityVery LowVery Lowunder $1n/a$10$100No recorded events in Storm Events since 1996 (data through 2026-06-30).
15Cold WaveVery LowVery Low$0under $1$0under $11
HurricaneNot ApplicableNot Applicable0NRI rates hurricane Not Applicable for this county, and no counted federal declaration for this county names it (EM-3223-UT names it but is not counted as a local occurrence; see B1-d).No recorded events in Storm Events since 1996 (data through 2026-06-30).

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

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

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

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: 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 9751 (Relatively Low, 79.5); tract 9753 (Relatively Low, 77.5); tract 9752 (Relatively Low, 77.2)
Earthquaketract 9754 (Very High, 97.7); tract 9751 (Relatively Moderate, 87.3); tract 9753 (Relatively Moderate, 84.4)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 9751 (Relatively Moderate, 97.8); tract 9752 (Relatively Moderate, 97.0); tract 9755 (Relatively Low, 95.3)
Tornadotract 9751 (Very Low, 18.4); tract 9754 (Very Low, 14.5); tract 9753 (Very Low, 13.9)
Volcanic Activitytract 9751 (Very Low, 77.3); tract 9753 (Very Low, 76.0); tract 9755 (Very Low, 75.6)
Wildfiretract 9751 (Relatively Moderate, 95.7); tract 9752 (Relatively Moderate, 95.2); tract 9755 (Relatively Moderate, 94.9)

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 9751 is Census Tract 9751). 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)5 records, 1999 to 2014 (5 zone-level)No damage reported in 5 records.Countywide (zone-level records).
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill1 record, 1998 (1 zone-level)4 days; 1 with a recorded value4 consecutive days, 1998-12-21 to 1998-12-24, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)0Storm 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)8 records, 1983 to 20010.75 in to 1.25 in (median 0.88 in); 8 with a recorded value1.25 in hail, 1983-08-21Event records naming jurisdictions in the plan: Monroe city (1 record).
Excessive Heat, Heatheat index (in event narratives)3 records, 2013 to 2021 (3 zone-level)1 day to 5 days (median 3 days); 2 with a recorded value5 consecutive days, 2021-06-14 to 2021-06-18, zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice StormSperry-Piltz ice scale (local data)0
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)17 records, 1996 to 2026 (1 zone-level)Flash Flood, 2018-07-14, $1,000,000 property; $0 crops (2018 dollars)Event records naming jurisdictions in the plan: Monroe city (3 records), Richfield city (2 records), Glenwood town (1 record). Zone-level records (1) apply countywide.Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)2 records, 2005 to 2008Lightning, 2008-07-06, $0 property; $0 crops (2008 dollars), 1 direct injuryEvent records naming jurisdictions in the plan: Richfield city (1 record), Salina 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)48 records, 1996 to 2025 (48 zone-level)43 kt (49 mph) to 89 kt (102 mph) (median 59 kt (68 mph)); 45 with a recorded value89 kt (102 mph) measured gust, High Wind, 2010-03-30; NWS zone UTZ517High Wind, 2010-05-28, $80,000 property; $0 crops (zone total, 2010 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)31 records, 1987 to 202650 kt (58 mph) to 70 kt (81 mph) (median 52 kt (60 mph)); 30 with a recorded value70 kt (81 mph) measured gust, Thunderstorm Wind, 2016-06-11Thunderstorm Wind, 2002-07-14, $10,000 property; $5,000 crops (2002 dollars)Event records naming jurisdictions in the plan: Monroe city (7 records), Richfield city (6 records), Salina city (4 records), Annabella town (3 records), Glenwood town (2 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)2 records, 1957 to 1970F/EF1; 1 with a recorded valueF1 tornado, 1970-04-19, 1.5 mi path length (whole path, pre-1996), 50 yd wide, $250 property; crops not recorded (1970 dollars), 1 direct injuryTornado, 1957-08-07, $25,000 property; crops not recorded (1957 dollars)No event record names a jurisdiction in the plan.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)4 records, 1997 to 2015 (3 zone-level)Wildfire, 2015-04-14, $350,000 property; $0 crops (2015 dollars); NWS zone UTZ517Event records naming jurisdictions in the plan: Monroe city (1 record). Zone-level records (3) apply countywide.
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)135 records, 1996 to 2026 (135 zone-level)Winter Storm, 2026-02-17, $70,000 property; $0 crops (2026 dollars); NWS zone UTZ117Countywide (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: 9 declarations covering 6 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2025-07-162025-07-13FM-5600-UTFire managementMonroe Canyon FireWildfireno Public Assistance recordednew since last plan; within last 5 years
2020-04-042020-01-20DR-4525-UTMajor disasterCOVID-19 PandemicNon-natural, not countedno Public Assistance recordedin the 12 months before plan approval
2020-03-132020-01-20EM-3478-UTEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedin the 12 months before plan approvalsame incident as DR-4525
2011-08-082011-04-18DR-4011-UTMajor disasterFloodingInland Flooding$109,438
2005-09-052005-08-29EM-3223-UTEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2005-08-012005-04-28DR-1598-UTMajor disasterFlooding and LandslidesInland Flooding$142,058.99
1984-08-171984-08-17DR-720-UTMajor disasterSevere Storms, Mudslides, Landslides & FloodingInland Flooding (primary); also designated: Landslideno Public Assistance recorded
1983-04-301983-04-13DR-680-UTMajor disasterSevere Storms, Landslides & FloodingInland Flooding (primary); also designated: Landslideno Public Assistance recorded
1977-01-201977-01-20EM-3024-UTEmergencyDroughtDroughtno 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.

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
Avalanche5000001996 to 2026-06-30
Cold Wave1000001996 to 2026-06-30
Drought0000101996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail8000001955 to 2026-06-30
Heat Wave3200001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Inland Flooding17202401996 to 2026-06-30
Landslide0000201996 to 2026-06-30No Storm Events records of this type; 2 federal declared incidents (see declarations table)
Lightning2000001996 to 2026-06-30
Strong Wind7926625001955 to 2026-06-30Includes 47 High Wind and 1 Strong Wind records.
Tornado2000001950 to 2026-06-30
Volcanic Activity0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire4000111996 to 2026-06-30
Winter Weather13533132001996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2026-02-17Winter Storm$70,000 property; $0 crops (zone total, 2026 dollars)0, 0NWS zone UTZ117 (CENTRAL MOUNTAINS), zone-levelnew since last plan; within last 5 yearsB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2018-07-14Flash Flood$1,000,000 property; $0 crops (2018 dollars)0, 0RICHFIELDB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2016-06-11Thunderstorm Wind70 kt (81 mph) measured gust$0 property; $0 crops (2016 dollars)0, 0VERMILLIONB1-c worst recorded: Thunderstorm Wind
2015-04-14Wildfire$350,000 property; $0 crops (zone total, 2015 dollars)0, 0NWS zone UTZ517 (CENTRAL MOUNTAINS), zone-levelB1-c worst recorded: Wildfire
2014-02-09Avalanche$0 property; $0 crops (zone total, 2014 dollars)1, 0NWS zone UTZ517 (CENTRAL MOUNTAINS), zone-leveldeaths or injuries recorded
2011-03-26Avalanche$0 property; $0 crops (zone total, 2011 dollars)1, 2NWS zone UTZ517 (CENTRAL MOUNTAINS), zone-leveldeaths or injuries recorded
2010-03-30High Wind89 kt (102 mph) measured gust$0 property; $0 crops (zone total, 2010 dollars)0, 0NWS zone UTZ517 (CENTRAL MOUNTAINS), zone-levelB1-c worst recorded: High Wind and Strong Wind
2008-07-06Lightning$0 property; $0 crops (2008 dollars)0, 1RICHFIELDB1-c worst recorded: Lightning
1999-01-02Avalanche$0 property; $0 crops (zone total, 1999 dollars)2, 0NWS zone UTZ014 (SANPETE/SEVIER VALLEYS), zone-leveldeaths or injuries recorded
1998-12-21Cold/Wind Chilldamage not reported0, 0NWS zone UTZ014 (C SC SANPETE/C SEVIER), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
1983-08-21Hail1.25 indamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Hail
1970-04-19TornadoF1, 1.5 mi path length (whole path, pre-1996), 50 yd wide$250 property; crops not recorded (1970 dollars)0, 1location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (256 rows).

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

2 Fire Management declarations (1994-08-06 to 1994-08-06) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

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
Avalanche0.167events per yearabout 1 in 6 yearsLikelyFEMA annualized frequency (modeled)51994 to 2023 (30 years)see B1-f
Cold Wave0.000384event-days per yearabout 0.000384 days per yearPossibleStorm Events event-days in 1 of 30 years, 1996 to 2025 (3.33%)0.007272005-11-12 to 2024-11-12 (19 years)countywide
Drought83.6event-days per yearabout 83.6 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)2,3452000 to 2025 (25.25 years; D3 and D4 only)countywideNo Storm Events drought record, 1996 to 2025
Earthquake0.0161annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 1.61%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail0.0775events per yearabout 1 in 13 yearsPossibleFEMA annualized frequency (modeled)2.9 (modeled)1986 to 2023 (38 years)countywide
Heat Wave0.304event-days per yearabout 0.304 days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)4.042005-11-12 to 2024-11-12 (19 years)countywide
Hurricaneevents per year1851 to 2024 (Atlantic)see B1-fNot Applicable in NRI for this county; no descriptor.
Ice Storm0.0149event-days per yearabout 0.0149 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)01946-12-31 to 2014-02-12 (67 years)countywideNo Storm Events ice storm record, 1996 to 2025
Inland Flooding0.5event-days per yearabout 0.5 days per yearLikelyStorm Events event-days in 11 of 30 years, 1996 to 2025 (36.7%)141996 to 2023 (28 years)see B1-f
Landslide2.5events per year (modeled)about 2.5 per yearHighly likelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning45.1days per year with a strikeabout 45.1 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.114events per yearabout 1 in 9 yearsLikelyFEMA annualized frequency (modeled)51986 to 2023 (38 years)countywide
Tornado0.0405events per yearabout 1 in 25 yearsPossibleFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Volcanic Activity0.0002annual probabilityabout 1 in 5,000 yearsUnlikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Wildfire0.00215annual probability at a locationchance a given location in the county burns in a year: 0.215%LikelyStorm Events records in 3 of 30 years, 1996 to 2025 (10%)not shownmodeledsee B1-f
Winter Weather29.7event-days per yearabout 29.7 days per yearLikelyStorm Events event-days in 26 of 30 years, 1996 to 2025 (86.7%)5642005-11-12 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.

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 20250300
Hail2.00 in+1996 to 20250300
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 202526300.867
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20251300.0333
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20251300.0333
TornadoEF0-11996 to 20250300
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

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

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

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

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

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Avalanche4 of 577.077.479.5Relatively Low 4, Not Applicable 1
Cold Wave1 of 515.415.415.4Very Low 1, No Rating 4
Drought5 of 573.193.195.7Relatively Moderate 4, Very Low 1
Earthquake5 of 579.984.497.7Very High 1, Relatively Moderate 4
Hail5 of 58.29.418.0Very Low 5
Heat Wave5 of 522.742.650.4Relatively Low 5
Hurricane0 of 5Not Applicable 5
Ice Storm5 of 57.515.622.6Very Low 5
Inland Flooding5 of 535.444.277.2Relatively Moderate 2, Relatively Low 3
Landslide5 of 536.595.397.8Relatively Moderate 2, Relatively Low 2, Very Low 1
Lightning5 of 596.299.199.5Very High 5
Strong Wind5 of 528.444.948.4Relatively Low 5
Tornado5 of 57.213.918.4Very Low 5
Volcanic Activity5 of 563.775.677.3Very Low 5
Wildfire5 of 587.694.995.7Relatively Moderate 4, Relatively Low 1
Winter Weather5 of 593.696.497.8Very High 4, Relatively High 1

Cold Wave: 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.

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 plan
Sevier CountyCountyExpired on 2026-01-04FMA RL 0, SRL 0; any 0$251,496.990 total; 0 since its plan
Annabella townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded3 total; 3 since its plan
Central Valley townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Elsinore townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Glenwood townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded3 total; 0 since its plan
Joseph townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Monroe cityCityExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded12 total; 2 since its plan
Richfield cityCityExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded9 total; 4 since its plan
Salina cityCityExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded5 total; 0 since its plan
Sigurd townTownExpired on 2026-01-04FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan

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

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

Local data needed

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

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

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

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

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2021-01-05county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$66,392n/a5$1n/a$690,9510.000839%
Cold Wave$0$54,8680$0under $1$0building exposure is 0 in NRI
Droughtn/a$19,709,351n/an/a$229,472n/a1.16% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$8,285,211,613n/a21,522$2,535,013n/a$1,703,3280.0306%
Hail$4,743,081,743$114,011,94521,466$601$132$1,298under 0.0001%
Heat Wave$4,593,089,293$109,625,17521,346$28$4,842$146,645under 0.0001%$0
HurricaneNot Applicable in NRI for this county
Ice Storm$4,743,081,743n/a21,466$4,275n/a$1,464under 0.0001%
Inland Flooding$4,741,936,718$43,525,5461,581$3,315,365$34$52,650n/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.
Landslide$73,734,853n/a95$6,988n/a$12,5380.00948%
Lightning$4,743,081,743n/a21,466$4,326n/a$652,788under 0.0001%
Strong Wind$4,743,081,743$114,011,94521,466$8,746$751$56,9080.000184%$0$25,500Storm Events damage since the plan includes 1 zone-level High Wind record ($25,000) and 1 zone-level Strong Wind record ($500): NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition.
Tornado$4,743,081,743$114,011,94521,466$12,987$192$14,5450.000274%
Volcanic Activity$4,743,081,743n/a21,466under $1n/a$10under 0.0001%
Wildfire$900,247,666$46,161,4504,656$430,115$353$21,6820.0478%no Public Assistance recorded (1 declaration)
Winter Weather$4,743,081,743$114,011,94521,466$33,602$185$130,4180.000708%$70,000

Totals since 2021-01-05 (Storm Events through 2026-06-30): 14 county-coded records, 14 with a damage value recorded (including $0), $0; 49 zone-level records, 49 with a damage value recorded (including $0), $95,500 reported for the zone; Public Assistance: none recorded on the 1 counted declaration.

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
Population21,466
Building value (total, not at risk)$4,743,081,743
Agriculture value (total, not at risk)$114,011,945
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$6,588,007
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)$3,485,227
Social vulnerability ratingVery Low
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)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition0Severe repetitive loss, NFIP insurance definition0

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

Repeat-flood properties: county total and NFIP communities

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total0000000

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

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Sevier County4901210000000
Annabella town4901220000000
Central Valley town4955190000000
Elsinore town4901250000000
Glenwood town4901260000000
Joseph town4901270000000
Monroe city4901290000000
Richfield city4901310000000
Salina city4901320000000
Sigurd town4901330000000

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: 0 in every occupancy group.

Sources: 1, 4

FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.

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

In this county 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 0 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). Sevier County, UT: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 49041). Automated baseline. https://hazardplain.org/ut/49041/ 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]