NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Afton, 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 Afton, Wyoming since records began in 1851. Since 1950, 1 tornado has touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 1
- 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 Afton
The only tornado within 25 miles was an F1 on July 24, 1980; its path came within 3 miles. Of the 35 Wyoming cities on this site, 91% have more tornadoes within 25 miles than Afton. Hail has been reported within 10 miles 12 times since 1995, with stones up to 1.5 inches (ping pong ball size). Of the 35 Wyoming cities, 66% have more hail reports within 10 miles than Afton.
Compare Afton's storm record with another city →
Tornadoes within 25 miles of Afton
By decade
- 1980s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 24, 1980 | F1 | 3 mi | 0.1 mi | 0 / 0 |
The strongest 1 of 1, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Afton
The Storm Prediction Center has 12 hail reports within 10 miles of Afton since 1995, made on 9 separate days. Of these, 9 were 1 inch across or larger, and none reached 2 inches. The largest, 1.5 inches (ping pong ball size), fell on September 18, 2014. The most recent report is from June 15, 2015. August has the most reports, 5.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Afton
The nearest NOAA station with 1991–2020 climate normals is Afton, WY, 4 miles north of Afton at 6,248 feet. July is the warmest, with an average high of 80°F and low of 44°F; January is the coolest, at 26°F and 5°F. May is the wettest at 2.4 inches of precipitation on average and July and August the driest at 1.1 inches; the year adds up to 17.8 inches over 55 days with at least a tenth of an inch. Highs reach 90°F on about 5 days a year, almost all from July to August. Lows fall below freezing on about 227 nights a year. Snowfall averages 87.8 inches a year, most of it in January. That 17.8 inches is more than at 28 of the 32 Wyoming stations used on this site (88%). Thayne, 20 miles north, has its own station (Bedford 3 SE, WY): 25.3 inches a year, 7.5 more than here, and the same July average high, 80°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 26 | 5 | 1.3 | 5 | 21.8 |
| Feb | 31 | 8 | 1.3 | 5 | 15.0 |
| Mar | 40 | 17 | 1.5 | 5 | 12.2 |
| Apr | 50 | 25 | 1.5 | 5 | 5.0 |
| May | 60 | 33 | 2.4 | 7 | 0.8 |
| Jun | 71 | 38 | 1.8 | 5 | 0.2 |
| Jul | 80 | 44 | 1.1 | 3 | 0.0 |
| Aug | 79 | 43 | 1.1 | 3 | 0.0 |
| Sep | 69 | 34 | 1.5 | 4 | 0.2 |
| Oct | 56 | 26 | 1.6 | 5 | 3.7 |
| Nov | 39 | 16 | 1.3 | 5 | 11.4 |
| Dec | 27 | 7 | 1.4 | 5 | 17.5 |
| Year | 52 | 25 | 17.8 | 55 | 87.8 |
Averages for 1991–2020 at Afton, WY (6,248 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 Afton
Since 1996, the National Weather Service has logged 9 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Afton: 5 thunderstorm wind reports and 4 floods. None is recorded as killing or injuring anyone; the NWS estimated $232,000 in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on July 15, 2025.
May 15, 2011: flood 7 miles from the centre of Afton — $200,000 damage.
NWS: “Rising temperatures quickly melted low elevation snow in the mountains of extreme eastern Idaho. This caused flooding of Spring, Tin Cup, Crow, Jack Knife, and Stump creeks along the western edge of Star Valley.”
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
Lincoln County, which includes Afton, has been named in 5 federal disaster or emergency declarations since 1977, 2 of them major disasters (by incident: 2 biological emergencies, 1 drought, 1 fire, 1 severe storm). The latest major disaster declaration was Covid-19 Pandemic, on April 11, 2020. FEMA's National Risk Index gives Lincoln County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for lightning; Relatively Low for inland flooding; Very Low for tornadoes, hail, strong wind and heat waves. It models the county's expected loss from all 18 hazards it covers at $18.0 million a year, the 9th highest of 23 Wyoming counties; of the hazards above, the largest share, $4.4 million (24%), 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 Afton
- Thayne, WY20 mi
- Montpelier, ID32 mi
- Soda Springs, ID33 mi
- Big Piney, WY42 mi
- Grace, ID44 mi
- Jackson, WY55 mi
- Pinedale, WY56 mi
- Wilson, WY58 mi
- Preston, ID58 mi
- Kemmerer, WY61 mi
- Victor, ID67 mi
- Inkom, ID67 mi
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