Alert archive / New Hampshire / 2018
Weather alerts in New Hampshire, September 2018
45 weather alerts in September 2018, 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 2018. Tap one for its archive.
- Alerts
- 45
- Warnings
- 7
- Watches
- 0
- Advisories
- 12
- Busiest day
- September 3, 20189 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 2, 2:46 PM EDT | Heat Advisory | GYX | Belknap, Carroll, Hillsborough, Merrimack, Rockingham, Strafford | 29 hr |
| Sep 3, 1:34 PM EDT | Mesoscale Discussion | SPC | Coos | 116 min |
| Sep 3, 2:09 PM EDT | Special Weather Statement | GYX | Coos | 51 min |
| Sep 3, 2:59 PM EDT | Special Weather Statement | GYX | Coos | 31 min |
| Sep 3, 3:12 PM EDT | Special Weather Statement | GYX | Coos | 33 min |
| Sep 3, 4:53 PM EDT | Special Weather Statement | GYX | Coos | 37 min |
| Sep 3, 4:57 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 48 min |
| Sep 3, 5:44 PM EDT | Special Weather Statement | GYX | Coos | 31 min |
| Sep 3, 5:52 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Coos | 38 min |
| Sep 3, 7:48 PM EDT | Severe Thunderstorm Warning | GYX | Coos, Grafton | 42 min |
| Sep 5, 2:16 PM EDT | Heat Advisory | GYX | Hillsborough, Rockingham | 25 hr |
| Sep 6, 9:12 AM EDT | Special Weather Statement | GYX | Coos | 63 min |
| Sep 6, 10:36 AM EDT | Severe Thunderstorm Warning | GYX | Carroll, Grafton | 39 min |
| Sep 6, 10:57 AM EDT | Special Weather Statement | GYX | Carroll | 48 min |
| Sep 6, 11:13 AM EDT | Special Weather Statement | GYX | Grafton | 62 min |
| Sep 6, 12:09 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Hillsborough, Merrimack, Rockingham and 2 more | 3 hr |
| Sep 6, 12:31 PM EDT | Special Weather Statement | GYX | Merrimack, Strafford | 59 min |
| Sep 6, 12:32 PM EDT | Special Weather Statement | GYX | Belknap, Merrimack, Sullivan | 58 min |
| Sep 6, 1:17 PM EDT | Special Weather Statement | GYX | Merrimack, Rockingham, Strafford | 58 min |
| Sep 6, 2:00 PM EDT | Special Weather Statement | GYX | Cheshire, Hillsborough, Rockingham | 30 min |
| Sep 7, 2:03 PM EDT | Frost Advisory | GYX | Carroll, Coos, Grafton | 42 hr |
| Sep 8, 3:25 PM EDT | Coastal Flood Statement | GYX | Rockingham | 9 hr |
| Sep 9, 2:53 AM EDT | Coastal Flood Statement | GYX | Rockingham | 22 hr |
| Sep 9, 3:00 PM EDT | Frost Advisory | GYX | Coos | 17 hr |
| Sep 10, 3:34 PM EDT | Coastal Flood Advisory | GYX | Rockingham | 10 hr |
| Sep 12, 2:55 PM EDT | High Surf Advisory | GYX | Rockingham | 38 hr |
| Sep 14, 3:14 AM EDT | Dense Fog Advisory | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 3 hr |
| Sep 14, 3:02 PM EDT | Dense Fog Advisory | GYX | Cheshire, Coos, Grafton, Hillsborough, Rockingham, Strafford and 1 more | 18 hr |
| Sep 15, 3:07 PM EDT | Dense Fog Advisory | GYX | Belknap, Hillsborough, Merrimack, Rockingham, Strafford | 18 hr |
| Sep 18, 7:54 AM EDT | Areal Flood Advisory | GYX | Hillsborough, Rockingham | 3 hr |
| Sep 18, 8:07 AM EDT | Flash Flood Warning | GYX | Cheshire, Hillsborough, Rockingham | 6 hr |
| Sep 18, 9:34 AM EDT | Areal Flood Advisory | GYX | Rockingham | 3 hr |
| Sep 18, 11:00 AM EDT | River Flood Warning | GYX | Hillsborough | 3 hr |
| Sep 22, 3:33 AM EDT | Frost Advisory | GYX | Carroll, Cheshire, Grafton, Sullivan | 29 hr |
| Sep 22, 3:33 AM EDT | Freeze Warning | GYX | Carroll, Coos, Grafton | 29 hr |
| Sep 26, 2:43 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan | 2 hr |
| Sep 26, 6:47 PM EDT | Special Weather Statement | GYX | Grafton | 43 min |
| Sep 26, 7:21 PM EDT | Special Weather Statement | GYX | Sullivan | 24 min |
| Sep 26, 7:44 PM EDT | Special Weather Statement | GYX | Grafton | 46 min |
| Sep 26, 8:00 PM EDT | Special Weather Statement | GYX | Merrimack | 45 min |
| Sep 26, 8:34 PM EDT | Special Weather Statement | GYX | Carroll | 41 min |
| Sep 26, 8:38 PM EDT | Special Weather Statement | GYX | Hillsborough, Merrimack | 52 min |
| Sep 26, 9:20 PM EDT | Special Weather Statement | GYX | Rockingham, Strafford | 55 min |
| Sep 26, 9:31 PM EDT | Special Weather Statement | GYX | Rockingham | 59 min |
| Sep 26, 10:09 PM EDT | Special Weather Statement | GYX | Rockingham | 36 min |
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 | 4 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 21 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 1 |
| Areal Flood Advisory | 2 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
| 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 archive20172019
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.