NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Thermopolis, WY
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Thermopolis, Wyoming since records began in 1851. Since 1950, 5 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 5
- EF3 or stronger
- 0
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Thermopolis
The strongest of the 5 tornadoes within 25 miles was an F2 on July 10, 2001; its path came within 11 miles. Of the 5, one had a path within 5 miles of the city centre, and 4 have come since 2000. The most recent tornado was on September 9, 2024. Of the 35 Wyoming cities on this site, 71% have more tornadoes within 25 miles than Thermopolis. Hail has been reported within 10 miles 27 times since 1982, with stones up to 2.5 inches (tennis ball size). Thermopolis has more hail reports within 10 miles than 62% of the 35 Wyoming cities.
Compare Thermopolis's storm record with another city →
Tornadoes within 25 miles of Thermopolis
By decade
- 2020s1
- 2000s3
- 1980s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 10, 2001 | F2 | 11 mi | 0.5 mi | 0 / 0 |
| Sep 9, 2024 | EF0 | 6 mi | 0.19 mi | 0 / 0 |
| Jun 14, 2009 | EF0 | 5 mi | 0.67 mi | 0 / 0 |
| May 29, 2008 | EF0 | 5 mi | 0.3 mi | 0 / 0 |
| Jun 20, 1985 | F0 | 12 mi | 1 mi | 0 / 0 |
The strongest 5 of 5, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Thermopolis
The Storm Prediction Center has 27 hail reports within 10 miles of Thermopolis since 1982, made on 24 separate days. Of these, 14 were 1 inch across or larger, and one reached 2 inches. The largest, 2.5 inches (tennis ball size), fell on July 1, 1982. The most recent report is from July 29, 2025. July has the most reports, 13.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Thermopolis
The nearest NOAA station with 1991–2020 climate normals is Thermopolis, WY, 7 miles southeast of Thermopolis at 4,321 feet. July is the warmest, with an average high of 92°F and low of 57°F; January is the coolest, at 37°F and 12°F. May is the wettest at 2.5 inches of precipitation on average and January and February the driest at 0.4 inches; the year adds up to 12.0 inches over 29 days with at least a tenth of an inch. Highs reach 90°F on about 55 days a year, almost all from June to September. Lows fall below freezing on about 168 nights a year. Snowfall averages 27.4 inches a year, most of it in November. That 12.0 inches is more than at 14 of the 32 Wyoming stations used on this site (44%). Worland, 27 miles northeast, has its own station (Worland, WY): 8.5 inches a year, 3.5 less than here, and a July average high of 91°F against 92°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 37 | 12 | 0.4 | 1 | 5.4 |
| Feb | 42 | 16 | 0.4 | 1 | 4.9 |
| Mar | 54 | 26 | 0.9 | 2 | 2.3 |
| Apr | 62 | 33 | 1.6 | 4 | 2.2 |
| May | 71 | 43 | 2.5 | 4 | 0.2 |
| Jun | 83 | 51 | 1.3 | 4 | 0.0 |
| Jul | 92 | 57 | 0.8 | 2 | 0.0 |
| Aug | 90 | 55 | 0.5 | 2 | 0.0 |
| Sep | 80 | 46 | 1.2 | 3 | 0.3 |
| Oct | 65 | 34 | 1.3 | 2 | 2.1 |
| Nov | 49 | 22 | 0.6 | 2 | 5.5 |
| Dec | 38 | 12 | 0.5 | 1 | 4.5 |
| Year | 63 | 34 | 12.0 | 29 | 27.4 |
Averages for 1991–2020 at Thermopolis, WY (4,321 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Thermopolis
Since 1996, the National Weather Service has logged 20 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Thermopolis: 19 thunderstorm wind reports and 1 flash flood. None is recorded as killing or injuring anyone; the NWS estimated $28,000 in property and crop damage. The strongest thunderstorm gust on record here was 74 mph, on August 2, 2016.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Hot Springs County, which includes Thermopolis, has been named in 4 federal disaster or emergency declarations since 1978, 2 of them major disasters (by incident: 2 biological emergencies, 1 fire, 1 flood). The latest major disaster declaration was Covid-19 Pandemic, on April 11, 2020. FEMA's National Risk Index gives Hot Springs County a Very Low rating for natural hazard risk overall; by hazard: Relatively Low for inland flooding and lightning; Very Low for tornadoes, hail, strong wind and heat waves. It models the county's expected loss from all 18 hazards it covers at $4.7 million a year, the 22nd highest of 23 Wyoming counties; of the hazards above, the largest share, $3.5 million (76%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. 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).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets 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).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Thermopolis
- Worland, WY27 mi
- Riverton, WY47 mi
- Greybull, WY58 mi
- Lander, WY68 mi
- Cody, WY75 mi
- Lovell, WY76 mi
- Powell, WY80 mi
- Buffalo, WY92 mi
- Pinedale, WY96 mi
- Sheridan, WY102 mi
- Casper, WY114 mi
- Red Lodge, MT118 mi
All Wyoming cities →All hurricanes since 1851 →Compare Thermopolis with another place →