Cassia County weather alerts
There are no active weather alerts for Cassia County, ID right now.
Since 2016 the National Weather Service has issued about 172 alerts that included Cassia County, roughly 17 a year. The most common is the severe thunderstorm warning (97 from 2016 to 2025). The last tornado warning was issued on August 28, 2023. 10 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 Cassia County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Blaine County, Oneida County, Jerome County, Box Elder County.
Cassia County alert history
Alert events that included Cassia County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 97 | 12 | August 24, 2026 |
| Flash Flood Warning | 23 | 0 | June 14, 2023 |
| Flood Advisory | 21 | 0 | February 24, 2025 |
| Flood Warning | 12 | 0 | March 15, 2023 |
| Snow Squall Warning | 8 | 0 | December 23, 2023 |
| Severe Thunderstorm Watch | 7 | 2 | August 23, 2026 |
| Tornado Warning | 4 | 0 | August 28, 2023 |
Tornado history in Cassia County
10 tornadoes have been recorded in Cassia County since 1950. That ranks 6 of 44 counties in Idaho. The most recent was on May 26, 2023 (rated EF0).
Strongest tornadoes in Cassia County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 24, 2004 | F0 | Cassia County | 1 mi | 20 yd | 0 | 0 |
| September 1, 2012 | EF0 | Cassia County | 1 mi | 20 yd | 0 | 0 |
| September 1, 2012 | EF0 | Cassia County | 1 mi | 20 yd | 0 | 0 |
| August 2, 2019 | EF0 | Cassia County | 1 mi | 10 yd | 0 | 0 |
| August 24, 1986 | F0 | Cassia County | 0.5 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 26, 2023 | EF0 | Cassia County | 0.2 mi | 10 yd | 0 | 0 |
| August 2, 2019 | EF0 | Cassia County | 1 mi | 10 yd | 0 | 0 |
| September 1, 2012 | EF0 | Cassia County | 1 mi | 20 yd | 0 | 0 |
| September 1, 2012 | EF0 | Cassia County | 1 mi | 20 yd | 0 | 0 |
| April 8, 2009 | EF0 | Cassia County | 0.3 mi | 20 yd | 0 | 0 |
About Cassia County
- Population: 25,976 (2024 estimate)
- State: Idaho
- NOAA Weather Radio SAME code: 016031 (how to use it)