Alert archive / New Hampshire / 2021
Weather alerts in New Hampshire, September 2021
38 weather alerts in September 2021, 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 September 2021. Tap one for its archive.
- Alerts
- 38
- Warnings
- 10
- Watches
- 2
- Advisories
- 4
- Busiest day
- September 15, 202115 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 |
|---|---|---|---|---|
| Sep 1, 3:35 AM EDT | Flash Flood Watch | GYX | Cheshire, Hillsborough, Merrimack, Rockingham, Strafford | 29 hr |
| Sep 2, 3:49 AM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 5 hr |
| Sep 6, 1:40 PM EDT | Mesoscale Discussion | SPC | Coos | 2 hr |
| Sep 6, 1:56 PM EDT | Special Weather Statement | GYX | Grafton | 34 min |
| Sep 6, 2:32 PM EDT | Special Weather Statement | GYX | Coos | 28 min |
| Sep 6, 2:41 PM EDT | Special Weather Statement | GYX | Carroll | 34 min |
| Sep 6, 3:02 PM EDT | Special Weather Statement | GYX | Grafton | 43 min |
| Sep 6, 3:11 PM EDT | Special Weather Statement | GYX | Carroll | 34 min |
| Sep 6, 6:21 PM EDT | Special Weather Statement | GYX | Coos | 39 min |
| Sep 8, 2:07 PM EDT | Coastal Flood Statement | GYX | Rockingham | 12 hr |
| Sep 8, 2:07 PM EDT | High Surf Advisory | GYX | Rockingham | 3 days |
| Sep 8, 8:40 PM EDT | Special Weather Statement | GYX | Sullivan | 50 min |
| Sep 8, 9:05 PM EDT | Special Weather Statement | GYX | Cheshire, Sullivan | 40 min |
| Sep 8, 9:40 PM EDT | Special Weather Statement | GYX | Grafton | 35 min |
| Sep 9, 4:12 AM EDT | Special Weather Statement | GYX | Strafford | 48 min |
| Sep 9, 4:12 AM EDT | Mesoscale Discussion | SPC | Hillsborough, Rockingham | 3 hr |
| Sep 9, 4:02 PM EDT | Coastal Flood Statement | GYX | Rockingham | 11 hr |
| Sep 10, 3:08 AM EDT | Coastal Flood Statement | GYX | Rockingham | 12 hr |
| Sep 10, 10:09 PM EDT | Coastal Flood Statement | GYX | Rockingham | 6 hr |
| Sep 13, 1:20 AM EDT | Special Weather Statement | BOX | Hillsborough | 40 min |
| Sep 15, 7:50 AM EDT | Special Weather Statement | GYX | Coos | 55 min |
| Sep 15, 11:59 AM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 2 hr |
| Sep 15, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 6 hr |
| Sep 15, 2:18 PM EDT | Severe Thunderstorm Warning | GYX | Coos, Grafton | 57 min |
| Sep 15, 2:31 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan | 59 min |
| Sep 15, 2:33 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 42 min |
| Sep 15, 3:04 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Grafton, Merrimack, Sullivan | 56 min |
| Sep 15, 3:22 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan | 53 min |
| Sep 15, 4:07 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack, Sullivan | 38 min |
| Sep 15, 4:09 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton, Merrimack | 51 min |
| Sep 15, 4:38 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 2 more | 67 min |
| Sep 15, 4:44 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Merrimack, Strafford | 46 min |
| Sep 15, 5:09 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack | 51 min |
| Sep 15, 5:29 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Strafford | 61 min |
| Sep 15, 5:38 PM EDT | Special Weather Statement | BOX | Hillsborough | 52 min |
| Sep 17, 11:50 PM EDT | Dense Fog Advisory | GYX | Hillsborough, Rockingham, Strafford | 9 hr |
| Sep 19, 3:29 AM EDT | Rip Current Statement | GYX | Rockingham | 15 hr |
| Sep 24, 2:14 PM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Coos, Grafton | 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 | 10 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 13 |
| Flooding | |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| High Surf Advisory | 1 |
| Coastal Flood Statement | 4 |
| Rip Current Statement | 1 |
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 archive20202022
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. Rebuilt daily.