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Wyoming
The recorded hazard history of every county in Wyoming: storm events since 1950, federal disaster declarations since 1953, and National Flood Insurance Program claims since 1978.
Wyoming has 26,150 weather events in the NCEI Storm Events record since 1950 across 23 counties, led by damaging wind: 26.9 per 100 square miles against 56.0 nationally.
NCEI attributes 116 deaths and 648 injuries to those events, with property damage estimated at $331M. By events per 100 square miles the leading counties are Laramie, Goshen and Platte.
FEMA lists 45 disaster declarations touching the state since 1953, most recently Red Canyon Fire (15 Aug 2025). NFIP policyholders filed 562 flood claims since 1978, $3.8M paid; 1,305 residential policies are in force.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026; declarations refreshed 29 Sep 2026; claims as of 8 Sep 2026.
Compared with the United States
| Measure | Wyoming | US |
|---|---|---|
| Recorded events since 1950 | 26,150 | 1,977,440 |
| Events per 100 square miles | 26.9 | 56.0 |
| Events per 10,000 residents | 451.8 | 59.6 |
| Deaths recorded by NCEI | 116 | 26,435 |
| Property damage (NCEI estimates) | $331M | $575B |
| NFIP claims per 1,000 residents | 1.0 | 8.1 |
| Average paid NFIP claim | $12K | $43K |
| Residential flood policies in force | 1,305 | 3,139,862 |
Hazard mix
Events by decade
Counties by events per 100 square miles
| County | Events | Last 12 mo | Per 100 sq mi | Per 10k residents | Dominant | Tornadoes | Hail | Declarations | NFIP claims | NRI risk |
|---|---|---|---|---|---|---|---|---|---|---|
| Laramie County | 1,613 | 63 | 60.1 | 159.9 | Hail | 130 | 1,113 | 5 | 192 | Relatively Low |
| Goshen County | 959 | 27 | 43.1 | 764.9 | Hail | 92 | 458 | 5 | 12 | Very Low |
| Platte County | 732 | 12 | 35.2 | 841.5 | Hail | 50 | 388 | 8 | 1 | Very Low |
| Crook County | 843 | 18 | 29.5 | 1,152.4 | Hail | 38 | 504 | 7 | 0 | Very Low |
| Weston County | 655 | 12 | 27.3 | 971.1 | Hail | 28 | 304 | 7 | 1 | Very Low |
| Campbell County | 1,144 | 36 | 23.8 | 246.5 | Hail | 93 | 591 | 6 | 22 | Relatively Low |
| Niobrara County | 489 | 13 | 18.6 | 2,005.7 | Hail | 36 | 217 | 5 | 1 | Very Low |
| Sheridan County | 389 | 6 | 15.4 | 122.9 | Hail | 10 | 217 | 7 | 74 | Relatively Low |
| Natrona County | 417 | 26 | 7.8 | 52.4 | Hail | 40 | 166 | 8 | 57 | Relatively Low |
| Uinta County | 162 | 34 | 7.8 | 78.5 | Wind | 4 | 3 | 5 | 6 | Very Low |
| Converse County | 305 | 9 | 7.2 | 223.1 | Hail | 47 | 160 | 5 | 14 | Very Low |
| Johnson County | 299 | 15 | 7.2 | 346.7 | Hail | 23 | 153 | 7 | 6 | Very Low |
| Big Horn County | 222 | 4 | 7.1 | 190.9 | Wind | 33 | 62 | 4 | 9 | Very Low |
| Albany County | 294 | 16 | 6.9 | 78.2 | Hail | 32 | 130 | 10 | 16 | Relatively Low |
| Washakie County | 149 | 9 | 6.7 | 193.4 | Wind | 9 | 49 | 5 | 5 | Very Low |
| Hot Springs County | 132 | 6 | 6.6 | 287.1 | Hail | 6 | 65 | 4 | 1 | Very Low |
| Fremont County | 465 | 33 | 5.1 | 118.2 | Wind | 23 | 137 | 6 | 17 | Relatively Low |
| Carbon County | 241 | 18 | 3.1 | 164.5 | Wind | 18 | 36 | 5 | 34 | Very Low |
| Teton County | 120 | 3 | 3.0 | 50.9 | Wind | 3 | 34 | 5 | 24 | Relatively Low |
| Park County | 204 | 9 | 2.9 | 67.8 | Wind | 10 | 67 | 4 | 19 | Relatively Low |
| Lincoln County | 108 | 6 | 2.7 | 53.6 | Wind | 6 | 34 | 5 | 11 | Relatively Low |
| Sublette County | 105 | 15 | 2.1 | 120.7 | Wind | 8 | 18 | 4 | 7 | Very Low |
| Sweetwater County | 193 | 19 | 1.9 | 46.4 | Wind | 26 | 13 | 4 | 22 | Very Low |
Events are county-recorded plus zone-recorded events whose zone is named for the county. NRI risk is FEMA's National Risk Index overall rating (December 2025).
Counties by flood claims per 100 policies in force
| County | Claims, last 10 years | Policies in force | Claims per 100 policies | Claims since 1978 | Paid |
|---|---|---|---|---|---|
| Laramie County | 15 | 217 | 6.9 | 192 | $970K |
| Natrona County | 6 | 161 | 3.7 | 57 | $247K |
| Teton County | 5 | 341 | 1.5 | 24 | $117K |
| Goshen County | 0 | 104 | 0.0 | 12 | $51K |
Counties with at least 100 residential policies in force. Claims by year of loss in the ten years to 2026, divided by residential policies in force as of 3 Aug 2026; a rough ratio, since policies in force today differ from those in force when the losses occurred.
Federal disaster declarations by year
| Incident type | Declarations |
|---|---|
| Fire | 28 |
| Flood | 7 |
| Severe Storm | 3 |
| Biological | 2 |
| Tornado | 2 |
| Severe Ice Storm | 1 |
| Toxic Substances | 1 |
| Drought | 1 |
Most recent declarations (each disaster number once, with the number of counties designated):
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 15 Aug 2025 | FM-5608 | Fire management assistance | Fire | Red Canyon Fire | 1 |
| 13 Nov 2024 | DR-4845 | Major disaster | Fire | Wildfires | 2 |
| 30 Sep 2024 | FM-5539 | Fire management assistance | Fire | Elk Fire | 1 |
| 22 Aug 2024 | FM-5531 | Fire management assistance | Fire | House Draw Fire | 1 |
| 30 Jul 2024 | FM-5523 | Fire management assistance | Fire | Pleasant Valley Fire | 1 |
| 1 Mar 2024 | FM-5490 | Fire management assistance | Fire | Happy Jack Fire | 1 |
| 11 Sep 2023 | DR-4739 | Major disaster | Flood | Flooding | 1 |
| 26 Sep 2020 | FM-5375 | Fire management assistance | Fire | Mullen Fire | 2 |
| 5 Sep 2020 | FM-5347 | Fire management assistance | Fire | 316 Fire | 1 |
| 11 Apr 2020 | DR-4535 | Major disaster | Biological | Covid-19 Pandemic | 23 |
| 13 Mar 2020 | EM-3479 | Emergency | Biological | Covid-19 | 23 |
| 18 Sep 2018 | FM-5276 | Fire management assistance | Fire | Roosevelt Fire | 1 |
| 11 Jun 2018 | FM-5241 | Fire management assistance | Fire | Badger Creek Fire | 1 |
| 5 Aug 2017 | DR-4327 | Major disaster | Flood | Flooding | 3 |
| 21 Mar 2017 | DR-4306 | Major disaster | Severe Storm | Severe Winter Storm And Straight-Line Winds | 1 |
Flood insurance claims by year
562 claims, 315 paid, $3.8M in total; 14 repetitive-loss and 0 severe repetitive-loss properties. ZIP codes in Wyoming with flood claims (24).
Year by year
Each year's events, declarations and claims: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · 2007 · 2006 · 2005 · 2004 · 2003 · 2002 · 2001 · 2000 · 1999 · 1998 · 1997 · and earlier years back to 1950
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- 1950
Questions and answers
Which Wyoming counties have the most recorded tornadoes?
Laramie (130), Campbell (93) and Goshen (92), by NCEI count since 1950. Larger counties record more events; the state table also ranks by events per 100 square miles.
Which Wyoming counties have the most flood insurance claims?
Laramie (192), Sheridan (74) and Natrona (57) since 1978, in the OpenFEMA NFIP claims file.
How many federal disaster declarations has Wyoming had?
45 declarations since 1953 (major disaster, emergency and fire management assistance declarations combined), 0 of them in 2026 so far.
How does Wyoming compare with the national rate?
26.9 recorded events per 100 square miles against 56.0 nationally; 1.0 NFIP claims per 1,000 residents against 8.1.
Provenance
NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 refreshed 29 Sep 2026; OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipResidentialPenetrationRates v1 (3 Aug 2026); FEMA National Risk Index December 2025; US Census Bureau 2021 population and area. Built 30 Sep 2026. Methodology.