Big Horn County weather alerts
There are no active weather alerts for Big Horn County, MT right now.
Since 2016 the National Weather Service has issued about 794 alerts that included Big Horn County, roughly 79 a year. The most common is the severe thunderstorm warning (244 from 2016 to 2025). The last tornado warning was issued on June 14, 2025. 11 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 Yellowstone County, Powder River County, Sheridan County, Treasure 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 |
|---|---|---|---|
| Severe Thunderstorm Warning | 244 | 29 | August 27, 2026 |
| Winter Weather Advisory | 205 | 16 | November 2, 2026 |
| Winter Storm Watch | 65 | 3 | November 2, 2026 |
| Winter Storm Warning | 61 | 2 | April 2, 2026 |
| Severe Thunderstorm Watch | 46 | 8 | August 23, 2026 |
| High Wind Warning | 33 | 4 | March 11, 2026 |
| Cold Weather Advisory | 23 | 0 | February 17, 2025 |
| High Wind Watch | 21 | 3 | March 11, 2026 |
| Flood Advisory | 20 | 5 | July 30, 2026 |
| Flood Watch | 19 | 3 | September 19, 2026 |
| Heat Advisory | 17 | 1 | July 24, 2026 |
| Flood Warning | 8 | 0 | January 16, 2024 |
| Dense Fog Advisory | 7 | 2 | November 1, 2026 |
| Flash Flood Warning | 7 | 1 | June 27, 2026 |
| Extreme Heat Warning | 6 | 3 | August 1, 2026 |
| Extreme Cold Warning | 4 | 0 | January 12, 2024 |
| Extreme Heat Watch | 4 | 3 | August 1, 2026 |
| Tornado Warning | 2 | 0 | June 14, 2025 |
| Tornado Watch | 1 | 0 | August 11, 2019 |
| Blizzard Warning | 1 | 0 | April 23, 2022 |
Tornado history in Big Horn County
11 tornadoes have been recorded in Big Horn County since 1950. That ranks 17 of 56 counties in Montana. The most recent was on June 7, 2018 (rated EF1).
Strongest tornadoes in Big Horn County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 22, 1996 | F1 | Big Horn County | 4 mi | 10 yd | 0 | 0 |
| June 21, 1984 | F1 | Big Horn County | 2 mi | 50 yd | 0 | 0 |
| June 21, 1984 | F1 | Big Horn County | 1 mi | 50 yd | 0 | 0 |
| June 7, 2018 | EF1 | Big Horn County | 0.8 mi | 100 yd | 0 | 0 |
| June 21, 1991 | F1 | Big Horn County | 0.2 mi | 10 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 7, 2018 | EF1 | Big Horn County | 0.8 mi | 100 yd | 0 | 0 |
| June 22, 1996 | F1 | Big Horn County | 4 mi | 10 yd | 0 | 0 |
| May 13, 1996 | F0 | Big Horn County | 0.1 mi | 10 yd | 0 | 0 |
| May 11, 1995 | F0 | Big Horn County | 0.1 mi | 10 yd | 0 | 0 |
| July 9, 1991 | F1 | Big Horn County | 0.1 mi | 10 yd | 0 | 0 |
About Big Horn County
- Population: 12,796 (2024 estimate)
- State: Montana
- NOAA Weather Radio SAME code: 030003 (how to use it)