Coos County weather alerts
There are no active weather alerts for Coos County, NH right now.
Since 2016 the National Weather Service has issued about 829 alerts that included Coos County, roughly 83 a year. The most common is the winter weather advisory (156 from 2016 to 2025). The last tornado warning was issued on July 11, 2024. 7 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 Coos County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Oxford County, Carroll County, Essex County, Grafton County.
Coos County alert history
Alert events that included Coos County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 156 | 9 | April 5, 2026 |
| Severe Thunderstorm Warning | 97 | 10 | August 3, 2026 |
| Flood Advisory | 81 | 4 | August 8, 2026 |
| Winter Storm Warning | 54 | 1 | January 25, 2026 |
| Wind Advisory | 53 | 1 | March 17, 2026 |
| Winter Storm Watch | 52 | 1 | January 25, 2026 |
| Flood Watch | 50 | 3 | June 18, 2026 |
| Cold Weather Advisory | 49 | 5 | February 9, 2026 |
| Flood Warning | 46 | 0 | March 18, 2025 |
| Flash Flood Warning | 37 | 1 | August 8, 2026 |
| Severe Thunderstorm Watch | 27 | 1 | July 15, 2026 |
| Frost Advisory | 23 | 3 | September 15, 2026 |
| Dense Fog Advisory | 18 | 0 | October 5, 2023 |
| Snow Squall Warning | 15 | 2 | January 22, 2026 |
| Freeze Warning | 14 | 1 | May 22, 2026 |
| Extreme Cold Warning | 14 | 1 | January 24, 2026 |
| Heat Advisory | 9 | 2 | July 14, 2026 |
| Extreme Cold Watch | 7 | 2 | February 7, 2026 |
| Tornado Warning | 5 | 0 | July 11, 2024 |
| Red Flag Warning | 4 | 0 | April 27, 2021 |
| High Wind Warning | 4 | 0 | January 10, 2024 |
| Fire Weather Watch | 4 | 0 | April 27, 2021 |
| High Wind Watch | 3 | 0 | January 10, 2024 |
| Freeze Watch | 3 | 0 | September 20, 2025 |
| Tornado Watch | 2 | 1 | June 18, 2026 |
| Tropical Storm Watch | 1 | 0 | August 3, 2020 |
| Tropical Storm Warning | 1 | 0 | August 3, 2020 |
Tornado history in Coos County
7 tornadoes have been recorded in Coos County since 1950. That ranks 7 of 10 counties in New Hampshire. The most recent was on July 18, 2016 (rated EF0).
Strongest tornadoes in Coos County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 9, 1956 | F1 | Coos County | 2 mi | 200 yd | 0 | 0 |
| July 13, 1966 | F1 | Coos County | 0.2 mi | 33 yd | 0 | 0 |
| July 18, 2016 | EF0 | Coos County | 2 mi | 200 yd | 0 | 0 |
| July 2, 1994 | F0 | Coos County | 0.3 mi | 10 yd | 0 | 0 |
| August 27, 1974 | F0 | Coos County | 0.1 mi | 10 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 18, 2016 | EF0 | Coos County | 2 mi | 200 yd | 0 | 0 |
| June 5, 2010 | EF0 | Coos County | 0.1 mi | 40 yd | 0 | 0 |
| July 2, 1994 | F0 | Coos County | 0.3 mi | 10 yd | 0 | 0 |
| August 8, 1980 | F0 | Coos County | 0.1 mi | 10 yd | 0 | 0 |
| August 27, 1974 | F0 | Coos County | 0.1 mi | 10 yd | 0 | 0 |
About Coos County
- Population: 31,094 (2024 estimate)
- State: New Hampshire
- NOAA Weather Radio SAME code: 033007 (how to use it)