Clarion County weather alerts
There are no active weather alerts for Clarion County, PA right now.
Since 2016 the National Weather Service has issued about 768 alerts that included Clarion County, roughly 77 a year. The most common is the severe thunderstorm warning (254 from 2016 to 2025). The last tornado warning was issued on July 21, 2026. 16 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 Clarion County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Venango County, Jefferson County, Armstrong County, Forest County.
Clarion County alert history
Alert events that included Clarion County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 254 | 53 | September 3, 2026 |
| Winter Weather Advisory | 87 | 6 | March 16, 2026 |
| Severe Thunderstorm Watch | 63 | 15 | September 9, 2026 |
| Dense Fog Advisory | 34 | 7 | August 21, 2026 |
| Wind Advisory | 34 | 2 | March 15, 2026 |
| Flood Watch | 32 | 8 | September 12, 2026 |
| Flash Flood Warning | 32 | 20 | September 13, 2026 |
| Frost Advisory | 30 | 5 | October 6, 2026 |
| Flood Warning | 26 | 6 | August 7, 2026 |
| Flood Advisory | 25 | 0 | August 7, 2024 |
| Freeze Warning | 24 | 6 | October 18, 2026 |
| Snow Squall Warning | 22 | 22 | March 17, 2026 |
| Freeze Watch | 15 | 4 | October 18, 2026 |
| Cold Weather Advisory | 15 | 8 | February 9, 2026 |
| Tornado Warning | 14 | 4 | July 21, 2026 |
| Winter Storm Watch | 13 | 1 | January 25, 2026 |
| Winter Storm Warning | 12 | 1 | January 25, 2026 |
| Tornado Watch | 11 | 3 | June 14, 2026 |
| High Wind Watch | 5 | 0 | December 23, 2022 |
| Heat Advisory | 4 | 2 | July 15, 2026 |
| High Wind Warning | 3 | 1 | March 13, 2026 |
| Extreme Heat Watch | 3 | 0 | June 22, 2025 |
| Red Flag Warning | 2 | 0 | April 12, 2023 |
| Lake Effect Snow Warning | 2 | 0 | December 4, 2024 |
| Extreme Cold Warning | 2 | 3 | February 7, 2026 |
| Extreme Cold Watch | 2 | 2 | February 7, 2026 |
| Fire Weather Watch | 1 | 0 | April 12, 2023 |
| Ice Storm Warning | 1 | 0 | December 26, 2025 |
| Extreme Heat Warning | 0 | 1 | June 30, 2026 |
Tornado history in Clarion County
16 tornadoes have been recorded in Clarion County since 1950, killing 1 people and injuring 25. That ranks 25 of 67 counties in Pennsylvania. The most recent was on June 9, 2025 (rated EF0).
Strongest tornadoes in Clarion County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 19, 1996 | F2 | Clarion County | 10 mi | 100 yd | 0 | 0 |
| June 1, 1954 | F2 | Clarion County | 0.1 mi | 10 yd | 0 | 0 |
| July 23, 1978 | F1 | Clarion County | 0.1 mi | 10 yd | 1 | 24 |
| May 1, 2017 | EF1 | Clarion County | 2.2 mi | 100 yd | 0 | 0 |
| October 4, 1973 | F1 | Clarion County | 1 mi | 60 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 9, 2025 | EF0 | Clarion County | 0.2 mi | 25 yd | 0 | 0 |
| July 11, 2017 | EF0 | Clarion County | 1 mi | 250 yd | 0 | 0 |
| June 19, 2017 | EF0 | Clarion County | 0.8 mi | 60 yd | 0 | 0 |
| June 19, 2017 | EF0 | Clarion County | 0.8 mi | 60 yd | 0 | 0 |
| May 1, 2017 | EF1 | Clarion County | 2.2 mi | 100 yd | 0 | 0 |
About Clarion County
- Population: 36,855 (2024 estimate)
- State: Pennsylvania
- NOAA Weather Radio SAME code: 042031 (how to use it)