Custer County weather alerts
There are no active weather alerts for Custer County, ID right now.
Since 2016 the National Weather Service has issued about 96 alerts that included Custer County, roughly 10 a year. The most common is the flood advisory (38 from 2016 to 2025). No tornado warnings were recorded here in that period. 2 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 Custer County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Valley County, Lemhi County, Blaine County, Boise County.
Custer County alert history
Alert events that included Custer County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 38 | 0 | June 15, 2023 |
| Severe Thunderstorm Warning | 25 | 0 | September 7, 2025 |
| Flood Warning | 24 | 0 | June 19, 2023 |
| Flash Flood Warning | 7 | 3 | September 18, 2026 |
| Severe Thunderstorm Watch | 2 | 0 | June 26, 2024 |
Tornado history in Custer County
2 tornadoes have been recorded in Custer County since 1950. That ranks 31 of 44 counties in Idaho. The most recent was on August 20, 2014 (rated EF0).
Strongest tornadoes in Custer County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 24, 2008 | EF0 | Custer County | 0.1 mi | 20 yd | 0 | 0 |
| August 20, 2014 | EF0 | Custer County | 0.1 mi | 5 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 20, 2014 | EF0 | Custer County | 0.1 mi | 5 yd | 0 | 0 |
| April 24, 2008 | EF0 | Custer County | 0.1 mi | 20 yd | 0 | 0 |
About Custer County
- Population: 4,597 (2024 estimate)
- State: Idaho
- NOAA Weather Radio SAME code: 016037 (how to use it)