New Haven County weather alerts
There are no active weather alerts for New Haven County, CT right now.
Since 2016 the National Weather Service has issued about 1,198 alerts that included New Haven County, roughly 120 a year. The most common is the flood advisory (215 from 2016 to 2025). The last tornado warning was issued on August 27, 2020. 20 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 New Haven County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Middlesex County, Fairfield County, Litchfield County, Hartford County.
New Haven County alert history
Alert events that included New Haven County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 215 | 28 | September 13, 2026 |
| Severe Thunderstorm Warning | 114 | 15 | August 27, 2026 |
| Wind Advisory | 98 | 3 | September 25, 2026 |
| Coastal Flood Advisory | 89 | 3 | September 28, 2026 |
| Winter Weather Advisory | 85 | 4 | March 3, 2026 |
| Dense Fog Advisory | 79 | 4 | March 16, 2026 |
| Flood Watch | 56 | 5 | September 13, 2026 |
| Flood Warning | 52 | 2 | March 17, 2026 |
| Severe Thunderstorm Watch | 50 | 6 | October 16, 2026 |
| Frost Advisory | 49 | 8 | November 1, 2026 |
| Flash Flood Warning | 39 | 8 | September 13, 2026 |
| Heat Advisory | 37 | 6 | August 9, 2026 |
| Freeze Warning | 34 | 2 | October 18, 2026 |
| Winter Storm Warning | 27 | 2 | February 22, 2026 |
| Freeze Watch | 24 | 2 | October 18, 2026 |
| Winter Storm Watch | 21 | 2 | February 22, 2026 |
| Red Flag Warning | 18 | 0 | November 15, 2024 |
| Coastal Flood Warning | 17 | 2 | September 25, 2026 |
| High Wind Warning | 17 | 0 | December 11, 2024 |
| High Wind Watch | 14 | 0 | November 6, 2025 |
| Snow Squall Warning | 11 | 3 | January 1, 2026 |
| Cold Weather Advisory | 7 | 3 | February 8, 2026 |
| Fire Weather Watch | 6 | 0 | May 17, 2023 |
| Tornado Watch | 6 | 1 | July 21, 2026 |
| Tropical Storm Warning | 6 | 0 | August 20, 2021 |
| Extreme Heat Watch | 5 | 1 | July 4, 2026 |
| Extreme Heat Warning | 5 | 1 | July 1, 2026 |
| Tropical Storm Watch | 5 | 0 | July 7, 2021 |
| Blizzard Warning | 4 | 1 | February 22, 2026 |
| Tornado Warning | 3 | 0 | August 27, 2020 |
| Extreme Cold Watch | 1 | 1 | February 7, 2026 |
| Extreme Cold Warning | 1 | 1 | February 7, 2026 |
| Hurricane Watch | 1 | 0 | August 20, 2021 |
| Hurricane Warning | 1 | 0 | August 20, 2021 |
| Storm Surge Warning | 1 | 0 | August 20, 2021 |
Tornado history in New Haven County
20 tornadoes have been recorded in New Haven County since 1950, killing 1 people and injuring 162. That ranks 2 of 8 counties in Connecticut. The most recent was on November 13, 2021 (rated EF0).
Strongest tornadoes in New Haven County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 10, 1989 | F4 | New Haven County | 3 mi | 100 yd | 0 | 40 |
| May 24, 1962 | F3 | New Haven County | 11.6 mi | 120 yd | 1 | 50 |
| July 29, 1971 | F3 | New Haven County | 0.1 mi | 200 yd | 0 | 2 |
| July 10, 1989 | F2 | Litchfield County | 5 mi | 100 yd | 0 | 70 |
| October 24, 1955 | F2 | New Haven County | 0.5 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 13, 2021 | EF0 | New Haven County | 1.9 mi | 300 yd | 0 | 0 |
| November 13, 2021 | EF0 | New Haven County | 3.6 mi | 100 yd | 0 | 0 |
| August 27, 2020 | EF1 | New Haven County | 11.1 mi | 500 yd | 0 | 0 |
| May 15, 2018 | EF1 | New Haven County | 7.4 mi | 600 yd | 0 | 0 |
| May 15, 2018 | EF1 | New Haven County | 3.7 mi | 400 yd | 0 | 0 |
About New Haven County
- State: Connecticut
- NOAA Weather Radio SAME code: 009009 (how to use it)
- Cities: New Haven, Waterbury