Alert archive / New Hampshire / 2017
Weather alerts in New Hampshire, September 2017
35 weather alerts in September 2017, 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 2017. Tap one for its archive.
- Alerts
- 35
- Warnings
- 6
- Watches
- 1
- Advisories
- 13
- Busiest day
- September 5, 201716 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, 3:07 PM EDT | Frost Advisory | GYX | Carroll, Coos, Grafton | 15 hr |
| Sep 5, 3:31 PM EDT | Special Weather Statement | GYX | Merrimack | 29 min |
| Sep 5, 3:46 PM EDT | Special Weather Statement | GYX | Sullivan | 29 min |
| Sep 5, 3:57 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Sullivan | 48 min |
| Sep 5, 4:16 PM EDT | Special Weather Statement | GYX | Cheshire | 29 min |
| Sep 5, 4:25 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 50 min |
| Sep 5, 4:27 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Merrimack, Sullivan | 48 min |
| Sep 5, 4:30 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 2 more | 2 hr |
| Sep 5, 4:44 PM EDT | Special Weather Statement | GYX | Carroll | 31 min |
| Sep 5, 5:05 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack, Sullivan | 40 min |
| Sep 5, 5:52 PM EDT | Special Weather Statement | GYX | Merrimack | 23 min |
| Sep 5, 6:08 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack, Rockingham, Strafford | 52 min |
| Sep 5, 6:18 PM EDT | Special Weather Statement | GYX | Cheshire | 27 min |
| Sep 5, 6:20 PM EDT | Areal Flood Advisory | GYX | Carroll | 115 min |
| Sep 5, 6:56 PM EDT | Special Weather Statement | GYX | Strafford | 34 min |
| Sep 5, 7:26 PM EDT | Special Weather Statement | BTV | Sullivan | 19 min |
| Sep 5, 7:49 PM EDT | Special Weather Statement | GYX | Cheshire | 26 min |
| Sep 6, 3:29 AM EDT | Flash Flood Watch | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 24 hr |
| Sep 6, 9:25 AM EDT | Special Weather Statement | GYX | Rockingham | 35 min |
| Sep 14, 7:11 PM EDT | Special Weather Statement | GYX | Carroll | 49 min |
| Sep 15, 5:41 AM EDT | Special Weather Statement | GYX | Belknap, Merrimack | 34 min |
| Sep 15, 2:14 PM EDT | Areal Flood Advisory | GYX | Rockingham, Strafford | 2 hr |
| Sep 15, 5:27 PM EDT | Areal Flood Advisory | GYX | Rockingham | 2 hr |
| Sep 15, 11:01 PM EDT | Dense Fog Advisory | GYX | Carroll, Rockingham, Strafford | 10 hr |
| Sep 16, 9:39 PM EDT | Dense Fog Advisory | GYX | Rockingham, Strafford | 13 hr |
| Sep 17, 6:31 PM EDT | Dense Fog Advisory | GYX | Belknap, Carroll, Hillsborough, Merrimack, Rockingham, Strafford | 14 hr |
| Sep 18, 3:05 PM EDT | Coastal Flood Statement | GYX | Rockingham | 9 hr |
| Sep 18, 3:05 PM EDT | High Surf Advisory | GYX | Rockingham | 5 days |
| Sep 18, 5:31 PM EDT | Dense Fog Advisory | GYX | Rockingham, Strafford | 10 hr |
| Sep 19, 2:55 PM EDT | Coastal Flood Statement | GYX | Rockingham | 10 hr |
| Sep 25, 7:08 AM EDT | Dense Fog Advisory | GYX | Cheshire, Coos, Grafton, Sullivan | 112 min |
| Sep 25, 8:33 PM EDT | Dense Fog Advisory | GYX | Cheshire, Coos, Grafton, Hillsborough, Merrimack, Rockingham and 2 more | 12 hr |
| Sep 27, 4:05 AM EDT | Dense Fog Advisory | GYX | Belknap, Carroll, Hillsborough, Merrimack, Rockingham, Strafford | 6 hr |
| Sep 30, 3:19 AM EDT | Frost Advisory | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 2 more | 29 hr |
| Sep 30, 3:19 AM EDT | Freeze Warning | GYX | Coos | 29 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 | 5 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Coast and beach | |
| High Surf Advisory | 1 |
| 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 archive20162018
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.