NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Lyman, 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 Lyman, Wyoming since records began in 1851. Since 1950, 4 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 4
- 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 Lyman
The strongest of the 4 tornadoes within 25 miles was an F2 on May 10, 1950; its path came within 15 miles. The most recent tornado was on May 30, 1989. Of the 35 Wyoming cities on this site, 80% have more tornadoes within 25 miles than Lyman.
Compare Lyman's storm record with another city →
Tornadoes within 25 miles of Lyman
By decade
- 1980s2
- 1960s1
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 10, 1950 | F2 | 15 mi | 2 mi | 0 / 0 |
| May 30, 1989 | F0 | 21 mi | 0.5 mi | 0 / 0 |
| May 30, 1989 | F0 | 6 mi | 0.5 mi | 0 / 0 |
| May 24, 1962 | F0 | 6 mi | 0.1 mi | 0 / 0 |
The strongest 4 of 4, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Lyman
The Storm Prediction Center has no hail reports within 10 miles of Lyman since 1955.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Lyman
The nearest NOAA station with 1991–2020 climate normals is Mountain View, WY, 9 miles south of Lyman at 6,800 feet. July is the warmest, with an average high of 80°F and low of 47°F; December is the coolest, at 31°F and 11°F. May is the wettest at 1.4 inches of precipitation on average and January and February the driest at 0.6 inches; the year adds up to 11.2 inches over 34 days with at least a tenth of an inch. Highs reach 90°F on about 2 days a year, almost all from July. Lows fall below freezing on about 206 nights a year. Snowfall averages 63.8 inches a year, most of it in November. That 11.2 inches is more than at 11 of the 32 Wyoming stations used on this site (34%). Evanston, 29 miles west, has its own station (Evanston 1 E, WY): 12.1 inches a year, 0.9 more than here, and a July average high of 81°F against 80°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 32 | 11 | 0.6 | 2 | 8.9 |
| Feb | 34 | 11 | 0.6 | 2 | 9.0 |
| Mar | 44 | 20 | 0.8 | 2 | 9.4 |
| Apr | 52 | 25 | 1.1 | 4 | 7.5 |
| May | 63 | 33 | 1.4 | 4 | 3.0 |
| Jun | 73 | 40 | 0.9 | 3 | 0.2 |
| Jul | 80 | 47 | 1.1 | 3 | 0.0 |
| Aug | 78 | 45 | 0.8 | 3 | 0.0 |
| Sep | 70 | 37 | 1.3 | 3 | 1.0 |
| Oct | 57 | 28 | 1.0 | 3 | 5.6 |
| Nov | 41 | 17 | 0.8 | 3 | 9.7 |
| Dec | 31 | 11 | 0.8 | 2 | 9.5 |
| Year | 55 | 27 | 11.2 | 34 | 63.8 |
Averages for 1991–2020 at Mountain View, WY (6,800 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 Lyman
Since 1996, the National Weather Service has logged 10 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Lyman: 9 thunderstorm wind reports and 1 flood. None is recorded as killing or injuring anyone; the NWS estimated $10,000 in property and crop damage. The strongest thunderstorm gust on record here was 74 mph, on July 9, 2025.
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
Uinta County, which includes Lyman, 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 Uinta County a Very Low rating for natural hazard risk overall; by hazard: Relatively Moderate for lightning; Relatively Low for strong wind; Very Low for tornadoes, hail and inland flooding. It models the county's expected loss from all 18 hazards it covers at $7.9 million a year, the 16th highest of 23 Wyoming counties; of the hazards above, the largest share, $4.9 million (62%), 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 Lyman
- Evanston, WY29 mi
- Kemmerer, WY34 mi
- Green River, WY42 mi
- Coalville, UT64 mi
- Rock Springs, WY64 mi
- Huntsville, UT70 mi
- Morgan, UT74 mi
- Vernal, UT75 mi
- Eden, UT75 mi
- Roosevelt, UT76 mi
- Park City, UT77 mi
- Logan, UT77 mi
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