Glenn County weather alerts
There are no active weather alerts for Glenn County, CA right now.
Since 2016 the National Weather Service has issued about 101 alerts that included Glenn County, roughly 10 a year. The most common is the flood advisory (41 from 2016 to 2025). The last tornado warning was issued on April 2, 2019. 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 Glenn County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Tehama County, Colusa County, Butte County, Mendocino County.
Glenn County alert history
Alert events that included Glenn County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 41 | 2 | April 22, 2026 |
| Flood Warning | 39 | 2 | February 26, 2026 |
| Severe Thunderstorm Warning | 17 | 8 | April 21, 2026 |
| Tornado Warning | 2 | 0 | April 2, 2019 |
| Flood Watch | 1 | 0 | March 10, 2016 |
| Flash Flood Warning | 1 | 0 | October 3, 2018 |
| Fire Weather Watch | 0 | 3 | September 12, 2026 |
| Red Flag Warning | 0 | 4 | October 11, 2026 |
| Heat Advisory | 0 | 6 | October 3, 2026 |
| Wind Advisory | 0 | 3 | November 13, 2026 |
Tornado history in Glenn County
11 tornadoes have been recorded in Glenn County since 1950. That ranks 17 of 58 counties in California. The most recent was on March 26, 2014 (rated EF1).
Strongest tornadoes in Glenn County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 19, 1953 | F2 | Glenn County | 2 mi | 10 yd | 0 | 0 |
| May 25, 2011 | EF1 | Glenn County | 26.4 mi | 120 yd | 0 | 0 |
| May 25, 2011 | EF1 | Glenn County | 21.7 mi | 120 yd | 0 | 0 |
| March 26, 2014 | EF1 | Glenn County | 1 mi | 50 yd | 0 | 0 |
| March 26, 2014 | EF1 | Glenn County | 0.7 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 26, 2014 | EF1 | Glenn County | 0.6 mi | 50 yd | 0 | 0 |
| March 26, 2014 | EF1 | Glenn County | 1 mi | 50 yd | 0 | 0 |
| March 26, 2014 | EF1 | Glenn County | 0.7 mi | 50 yd | 0 | 0 |
| May 25, 2011 | EF1 | Glenn County | 26.4 mi | 120 yd | 0 | 0 |
| May 25, 2011 | EF1 | Glenn County | 21.7 mi | 120 yd | 0 | 0 |
About Glenn County
- Population: 28,304 (2024 estimate)
- State: California
- NOAA Weather Radio SAME code: 006021 (how to use it)