Alert archive / New Hampshire / 2025
Weather alerts in New Hampshire, May 2025
36 weather alerts in May 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in May 2025. Tap one for its archive.
- Alerts
- 36
- Warnings
- 14
- Watches
- 4
- Advisories
- 8
- Busiest day
- May 3, 20259 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 6:58 PM EDT | Special Weather Statement | GYX | Sullivan | 32 min |
| May 2, 7:40 PM EDT | Special Weather Statement | GYX | Merrimack | 35 min |
| May 3, 12:14 PM EDT | Mesoscale Discussion | SPC | Cheshire, Hillsborough, Merrimack, Rockingham | 2 hr |
| May 3, 1:07 PM EDT | Severe Thunderstorm Watch | SPC | Belknap, Cheshire, Hillsborough, Merrimack, Rockingham, Strafford and 1 more | 5 hr |
| May 3, 1:45 PM EDT | Special Weather Statement | GYX | Sullivan | 30 min |
| May 3, 1:51 PM EDT | Special Weather Statement | GYX | Rockingham | 24 min |
| May 3, 2:12 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham | 28 min |
| May 3, 3:07 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 38 min |
| May 3, 3:47 PM EDT | Special Weather Statement | GYX | Hillsborough | 58 min |
| May 3, 4:08 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham | 37 min |
| May 3, 6:01 PM EDT | Special Weather Statement | GYX | Rockingham | 29 min |
| May 8, 8:41 PM EDT | Flood Watch | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 42 hr |
| May 10, 3:47 AM EDT | River Flood Watch | BOX | Hillsborough | 40 hr |
| May 10, 6:45 AM EDT | Areal Flood Warning | GYX | Cheshire, Sullivan | 5 hr |
| May 10, 7:00 AM EDT | River Flood Warning | GYX | Belknap, Merrimack | 48 hr |
| May 10, 7:20 AM EDT | River Flood Warning | GYX | Merrimack | 29 hr |
| May 10, 7:27 AM EDT | Areal Flood Warning | GYX | Hillsborough, Merrimack, Rockingham | 4 hr |
| May 10, 10:08 AM EDT | River Flood Warning | GYX | Hillsborough | 17 hr |
| May 10, 10:09 AM EDT | River Flood Warning | GYX | Hillsborough | 105 min |
| May 10, 11:31 AM EDT | Areal Flood Advisory | GYX | Carroll | 2 hr |
| May 10, 12:04 PM EDT | River Flood Warning | BOX | Hillsborough | 46 hr |
| May 11, 2:32 PM EDT | Frost Advisory | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 1 more | 15 hr |
| May 15, 9:32 PM EDT | Dense Fog Advisory | GYX | Rockingham | 11 hr |
| May 16, 9:13 PM EDT | Areal Flood Advisory | GYX | Coos | 62 min |
| May 17, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | Cheshire, Coos, Grafton, Sullivan | 7 hr |
| May 17, 4:36 PM EDT | Mesoscale Discussion | SPC | Cheshire, Grafton, Sullivan | 114 min |
| May 17, 6:00 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Sullivan | 45 min |
| May 17, 6:26 PM EDT | Areal Flood Advisory | GYX | Grafton, Sullivan | 3 hr |
| May 17, 6:54 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 36 min |
| May 17, 8:32 PM EDT | Areal Flood Advisory | GYX | Merrimack | 3 hr |
| May 17, 8:46 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham | 29 min |
| May 21, 3:42 PM EDT | Wind Advisory | GYX | Rockingham | 35 hr |
| May 26, 3:01 PM EDT | Coastal Flood Statement | GYX | Rockingham | 10 hr |
| May 27, 3:07 PM EDT | Coastal Flood Statement | GYX | Rockingham | 11 hr |
| May 31, 6:58 AM EDT | Areal Flood Advisory | GYX | Cheshire | 3 hr |
| May 31, 4:42 PM EDT | Areal Flood Warning | GYX | Belknap, Hillsborough, Merrimack | 3 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 6 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 3 |
| River Flood Warning | 5 |
| Flood Watch | 1 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Statement | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.