NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Kemmerer, 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 Kemmerer, 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 Kemmerer
The strongest of the 4 tornadoes within 25 miles was an F1 on July 10, 2001; its path came within 17 miles. Of the 35 Wyoming cities on this site, 80% have more tornadoes within 25 miles than Kemmerer. Hail has been reported within 10 miles 6 times since 1983, with stones up to 1.75 inches (golf ball size). Of the 35 Wyoming cities, 74% have more hail reports within 10 miles than Kemmerer.
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Tornadoes within 25 miles of Kemmerer
By decade
- 2000s1
- 1990s2
- 1960s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 10, 2001 | F1 | 17 mi | 5 mi | 0 / 0 |
| Sep 9, 1991 | F0 | 23 mi | 0.5 mi | 0 / 0 |
| May 2, 1991 | F0 | 20 mi | 0.1 mi | 0 / 0 |
| Jun 10, 1969 | F0 | 8 mi | 0.5 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 Kemmerer
The Storm Prediction Center has 6 hail reports within 10 miles of Kemmerer since 1983, made on 4 separate days. Of these, 2 were 1 inch across or larger, and none reached 2 inches. The largest size, 1.75 inches (golf ball size), was reported on 2 days, most recently September 13, 2001. The most recent report is from August 7, 2016.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Kemmerer
The nearest NOAA station with 1991–2020 climate normals is Kemmerer 2N, WY, 8 miles southwest of Kemmerer at 6,937 feet. July is the warmest, with an average high of 83°F and low of 43°F; January is the coolest, at 31°F and 2°F. May is the wettest at 1.4 inches of precipitation on average and July the driest at 0.5 inches; the year adds up to 9.6 inches over 30 days with at least a tenth of an inch. Highs reach 90°F on about 4 days a year, almost all from July to August. Lows fall below freezing on about 246 nights a year. Snowfall averages 49.7 inches a year, most of it in January. That 9.6 inches is more than at 7 of the 32 Wyoming stations used on this site (22%). Lyman, 34 miles south, has its own station (Mountain View, WY): 11.2 inches a year, 1.6 more than here, and a July average high of 80°F against 83°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 31 | 2 | 0.7 | 2 | 11.6 |
| Feb | 34 | 3 | 0.6 | 2 | 9.6 |
| Mar | 43 | 13 | 0.7 | 2 | 6.1 |
| Apr | 52 | 21 | 0.7 | 2 | 3.0 |
| May | 63 | 31 | 1.4 | 4 | 1.4 |
| Jun | 73 | 37 | 0.9 | 2 | 0.1 |
| Jul | 83 | 43 | 0.5 | 2 | 0.0 |
| Aug | 81 | 41 | 0.9 | 3 | 0.0 |
| Sep | 72 | 32 | 1.0 | 3 | 0.4 |
| Oct | 57 | 23 | 0.8 | 3 | 1.8 |
| Nov | 42 | 13 | 0.7 | 3 | 6.2 |
| Dec | 31 | 3 | 0.7 | 3 | 9.5 |
| Year | 55 | 22 | 9.6 | 30 | 49.7 |
Averages for 1991–2020 at Kemmerer 2N, WY (6,937 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 Kemmerer
Since 1996, the National Weather Service has logged 7 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Kemmerer: 5 thunderstorm wind reports and 2 flash floods. None is recorded as killing or injuring anyone; the NWS estimated $200,000 in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on June 1, 2002.
August 12, 2024: flash flood 10 miles from the centre of Kemmerer — $100,000 damage.
NWS: “The Lincoln County emergency management reported flooding in the town of Opal, WY caused by heavy rain from a slow-moving thunderstorm. Rainfall amount is unknown due to not having any know weather stations in the area.”
August 13, 2024: flash flood 10 miles from the centre of Kemmerer — $100,000 damage.
NWS: “The day after flash flooding occurred, more heavy rain impacted Opal, WY, leading to additional flash flooding. Large amounts of small hail and ponding water flooded roads and caused sewer backups.”
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 Kemmerer, 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 Kemmerer
- Lyman, WY34 mi
- Green River, WY43 mi
- Big Piney, WY48 mi
- Evanston, WY50 mi
- Montpelier, ID56 mi
- Afton, WY61 mi
- Rock Springs, WY67 mi
- Logan, UT72 mi
- Richmond, UT73 mi
- Hyde Park, UT73 mi
- Providence, UT73 mi
- Pinedale, WY74 mi
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