Big Horn County weather alerts
There are no active weather alerts for Big Horn County, WY right now.
Since 2016 the National Weather Service has issued about 508 alerts that included Big Horn County, roughly 51 a year. The most common is the winter weather advisory (146 from 2016 to 2025). The last tornado warning was issued on July 2, 2019. 32 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Big Horn County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Park County, Johnson County, Sheridan County, Washakie County.
Big Horn County alert history
Alert events that included Big Horn County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 146 | 10 | November 2, 2026 |
| Red Flag Warning | 65 | 11 | October 9, 2026 |
| Winter Storm Watch | 61 | 3 | November 2, 2026 |
| Severe Thunderstorm Warning | 60 | 5 | July 8, 2026 |
| Winter Storm Warning | 52 | 2 | April 3, 2026 |
| Fire Weather Watch | 41 | 4 | September 3, 2026 |
| Flood Advisory | 22 | 3 | July 16, 2026 |
| Flood Warning | 13 | 0 | June 6, 2021 |
| Severe Thunderstorm Watch | 13 | 1 | August 18, 2026 |
| High Wind Warning | 10 | 2 | March 12, 2026 |
| Tornado Warning | 9 | 0 | July 2, 2019 |
| Flood Watch | 7 | 4 | September 19, 2026 |
| Cold Weather Advisory | 4 | 0 | January 20, 2025 |
| Flash Flood Warning | 2 | 1 | July 16, 2026 |
| High Wind Watch | 2 | 1 | March 12, 2026 |
| Heat Advisory | 1 | 0 | August 1, 2022 |
Tornado history in Big Horn County
32 tornadoes have been recorded in Big Horn County since 1950, killing 1 people and injuring 2. That ranks 9 of 23 counties in Wyoming. The most recent was on June 12, 2017 (rated EF0).
Strongest tornadoes in Big Horn County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 2, 1985 | F3 | Big Horn County | 0.2 mi | 10 yd | 0 | 0 |
| June 26, 1959 | F2 | Big Horn County | 9.2 mi | 333 yd | 1 | 1 |
| July 4, 1978 | F2 | Big Horn County | 5 mi | 200 yd | 0 | 1 |
| June 12, 1962 | F2 | Big Horn County | 0.5 mi | 33 yd | 0 | 0 |
| July 9, 1962 | F2 | Big Horn County | 0.5 mi | 17 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 12, 2017 | EF0 | Big Horn County | 3.1 mi | 30 yd | 0 | 0 |
| May 24, 2014 | EF0 | Big Horn County | 0.8 mi | 20 yd | 0 | 0 |
| August 12, 2010 | EF0 | Big Horn County | 2.4 mi | 30 yd | 0 | 0 |
| June 1, 2009 | EF1 | Big Horn County | 0.4 mi | 35 yd | 0 | 0 |
| June 1, 2005 | F0 | Big Horn County | 10 mi | 20 yd | 0 | 0 |
About Big Horn County
- Population: 12,084 (2024 estimate)
- State: Wyoming
- NOAA Weather Radio SAME code: 056003 (how to use it)