Lemhi County weather alerts
There are no active weather alerts for Lemhi County, ID right now.
Since 2016 the National Weather Service has issued about 606 alerts that included Lemhi County, roughly 61 a year. The most common is the winter weather advisory (294 from 2016 to 2025). No tornado warnings were recorded here in that period. 3 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 Lemhi County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Beaverhead County, Custer County, Ravalli County, Valley County.
Lemhi County alert history
Alert events that included Lemhi County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 294 | 7 | April 23, 2026 |
| Wind Advisory | 63 | 12 | September 13, 2026 |
| Winter Storm Warning | 40 | 1 | June 28, 2026 |
| Flood Advisory | 38 | 1 | August 14, 2026 |
| Winter Storm Watch | 29 | 1 | June 28, 2026 |
| Extreme Cold Warning | 25 | 0 | February 12, 2025 |
| Flood Watch | 23 | 2 | October 10, 2026 |
| High Wind Warning | 13 | 1 | March 12, 2026 |
| High Wind Watch | 10 | 0 | December 17, 2025 |
| Severe Thunderstorm Warning | 9 | 0 | August 18, 2024 |
| Cold Weather Advisory | 9 | 0 | February 13, 2025 |
| Flash Flood Warning | 9 | 0 | July 31, 2025 |
| Snow Squall Warning | 8 | 0 | February 5, 2025 |
| Frost Advisory | 6 | 4 | June 11, 2026 |
| Severe Thunderstorm Watch | 6 | 0 | August 19, 2024 |
| Extreme Cold Watch | 5 | 0 | January 20, 2025 |
| Heat Advisory | 5 | 4 | August 21, 2026 |
| Freeze Warning | 4 | 1 | April 25, 2026 |
| Flood Warning | 4 | 0 | August 2, 2021 |
| Dense Fog Advisory | 4 | 0 | December 24, 2025 |
| Extreme Heat Watch | 1 | 1 | July 11, 2026 |
| Freeze Watch | 1 | 0 | September 30, 2024 |
Tornado history in Lemhi County
3 tornadoes have been recorded in Lemhi County since 1950. That ranks 25 of 44 counties in Idaho. The most recent was on June 15, 1987 (rated F1).
Strongest tornadoes in Lemhi County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 1, 1956 | F1 | Lemhi County | 0.5 mi | 10 yd | 0 | 0 |
| August 24, 1984 | F1 | Lemhi County | 0.1 mi | 10 yd | 0 | 0 |
| June 15, 1987 | F1 | Lemhi County | 0.1 mi | 20 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 15, 1987 | F1 | Lemhi County | 0.1 mi | 20 yd | 0 | 0 |
| August 24, 1984 | F1 | Lemhi County | 0.1 mi | 10 yd | 0 | 0 |
| June 1, 1956 | F1 | Lemhi County | 0.5 mi | 10 yd | 0 | 0 |
About Lemhi County
- Population: 8,397 (2024 estimate)
- State: Idaho
- NOAA Weather Radio SAME code: 016059 (how to use it)