Knox County weather alerts
There are no active weather alerts for Knox County, ME right now.
Since 2016 the National Weather Service has issued about 740 alerts that included Knox County, roughly 74 a year. The most common is the dense fog advisory (148 from 2016 to 2025). The last tornado warning was issued on June 19, 2021. 1 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 Knox County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Hancock County, Waldo County, Lincoln County.
Knox County alert history
Alert events that included Knox County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Dense Fog Advisory | 148 | 4 | June 28, 2026 |
| Winter Weather Advisory | 93 | 7 | March 22, 2026 |
| Wind Advisory | 84 | 1 | March 17, 2026 |
| Coastal Flood Advisory | 44 | 0 | August 23, 2025 |
| Winter Storm Watch | 42 | 2 | February 23, 2026 |
| Winter Storm Warning | 40 | 2 | February 23, 2026 |
| Severe Thunderstorm Warning | 35 | 6 | August 13, 2026 |
| Flood Watch | 34 | 1 | March 16, 2026 |
| Flood Advisory | 32 | 0 | June 25, 2024 |
| Frost Advisory | 28 | 4 | October 11, 2026 |
| High Wind Watch | 25 | 0 | December 19, 2025 |
| High Wind Warning | 23 | 0 | December 19, 2025 |
| Severe Thunderstorm Watch | 18 | 0 | July 3, 2025 |
| Flood Warning | 14 | 0 | March 10, 2024 |
| Freeze Warning | 9 | 0 | October 10, 2025 |
| Heat Advisory | 9 | 2 | August 7, 2026 |
| Cold Weather Advisory | 8 | 1 | January 24, 2026 |
| Coastal Flood Warning | 7 | 0 | March 10, 2024 |
| Fire Weather Watch | 7 | 0 | April 27, 2021 |
| Snow Squall Warning | 7 | 0 | February 7, 2025 |
| Red Flag Warning | 6 | 0 | April 27, 2021 |
| Blizzard Warning | 6 | 1 | February 23, 2026 |
| Flash Flood Warning | 5 | 0 | June 8, 2024 |
| Extreme Cold Warning | 3 | 0 | February 3, 2023 |
| Freeze Watch | 3 | 0 | October 10, 2025 |
| Extreme Cold Watch | 2 | 0 | February 3, 2023 |
| Tropical Storm Watch | 2 | 0 | September 13, 2023 |
| Tropical Storm Warning | 2 | 0 | September 14, 2023 |
| Tornado Warning | 2 | 0 | June 19, 2021 |
| Extreme Heat Warning | 1 | 1 | July 1, 2026 |
| Extreme Heat Watch | 1 | 1 | July 1, 2026 |
Tornado history in Knox County
1 tornadoes have been recorded in Knox County since 1950. That ranks 15 of 16 counties in Maine. The most recent was on August 8, 1969 (rated F1).
Strongest tornadoes in Knox County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 8, 1969 | F1 | Knox County | 1 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 8, 1969 | F1 | Knox County | 1 mi | 50 yd | 0 | 0 |
About Knox County
- Population: 40,981 (2024 estimate)
- State: Maine
- NOAA Weather Radio SAME code: 023013 (how to use it)