Alert archive / New Hampshire / 2018
Weather alerts in New Hampshire, August 2018
99 weather alerts in August 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 August 2018. Tap one for its archive.
- Alerts
- 99
- Warnings
- 30
- Watches
- 2
- Advisories
- 22
- Busiest day
- August 3, 201832 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 |
|---|---|---|---|---|
| Aug 1, 5:56 PM EDT | Areal Flood Advisory | GYX | Belknap, Merrimack | 3 hr |
| Aug 2, 3:48 AM EDT | Heat Advisory | GYX | Hillsborough, Rockingham, Strafford | 14 hr |
| Aug 3, 8:56 AM EDT | Heat Advisory | GYX | Hillsborough, Rockingham, Strafford | 10 hr |
| Aug 3, 10:48 AM EDT | Special Weather Statement | GYX | Cheshire | 57 min |
| Aug 3, 11:44 AM EDT | Special Weather Statement | GYX | Hillsborough | 46 min |
| Aug 3, 11:45 AM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Hillsborough, Merrimack, Rockingham and 2 more | 2 hr |
| Aug 3, 1:01 PM EDT | Special Weather Statement | GYX | Rockingham | 44 min |
| Aug 3, 1:34 PM EDT | Special Weather Statement | GYX | Strafford | 41 min |
| Aug 3, 1:41 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 32 min |
| Aug 3, 2:50 PM EDT | Flash Flood Watch | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 2 more | 23 hr |
| Aug 3, 3:01 PM EDT | Special Weather Statement | GYX | Cheshire, Sullivan | 44 min |
| Aug 3, 3:15 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Merrimack, Sullivan | 45 min |
| Aug 3, 3:20 PM EDT | Tornado Warning | GYX | Cheshire | 40 min |
| Aug 3, 3:25 PM EDT | Flash Flood Warning | GYX | Cheshire, Grafton, Hillsborough, Merrimack, Sullivan | 4 hr |
| Aug 3, 3:37 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack | 38 min |
| Aug 3, 3:47 PM EDT | Tornado Warning | GYX | Merrimack | 28 min |
| Aug 3, 3:57 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 48 min |
| Aug 3, 4:00 PM EDT | Special Weather Statement | GYX | Rockingham | 30 min |
| Aug 3, 4:07 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham | 38 min |
| Aug 3, 4:08 PM EDT | Flash Flood Warning | GYX | Belknap, Merrimack | 3 hr |
| Aug 3, 4:13 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack | 47 min |
| Aug 3, 4:15 PM EDT | Mesoscale Discussion | SPC | Cheshire, Hillsborough, Merrimack, Strafford | 60 min |
| Aug 3, 4:22 PM EDT | Areal Flood Advisory | GYX | Hillsborough, Merrimack, Rockingham, Strafford | 113 min |
| Aug 3, 4:31 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham, Strafford | 20 min |
| Aug 3, 4:43 PM EDT | Special Weather Statement | GYX | Cheshire | 47 min |
| Aug 3, 4:49 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Merrimack, Rockingham, Strafford | 41 min |
| Aug 3, 5:12 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham | 43 min |
| Aug 3, 5:24 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Strafford | 66 min |
| Aug 3, 5:26 PM EDT | Tornado Warning | GYX | Rockingham, Strafford | 34 min |
| Aug 3, 5:36 PM EDT | Flash Flood Warning | GYX | Hillsborough, Merrimack, Rockingham | 3 hr |
| Aug 3, 5:40 PM EDT | Flash Flood Warning | GYX | Strafford | 118 min |
| Aug 3, 5:48 PM EDT | Severe Thunderstorm Warning | GYX | Strafford | 42 min |
| Aug 3, 6:28 PM EDT | Areal Flood Advisory | GYX | Cheshire, Hillsborough | 3 hr |
| Aug 3, 7:17 PM EDT | Special Weather Statement | GYX | Rockingham | 28 min |
| Aug 4, 8:56 AM EDT | Areal Flood Advisory | GYX | Coos | 3 hr |
| Aug 5, 3:23 PM EDT | Heat Advisory | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 51 hr |
| Aug 6, 8:10 PM EDT | Special Weather Statement | GYX | Coos | 35 min |
| Aug 6, 8:26 PM EDT | Special Weather Statement | GYX | Coos | 49 min |
| Aug 7, 1:03 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 117 min |
| Aug 7, 2:12 PM EDT | Special Weather Statement | GYX | Cheshire | 33 min |
| Aug 7, 3:53 PM EDT | Special Weather Statement | GYX | Coos | 37 min |
| Aug 7, 4:22 PM EDT | Special Weather Statement | GYX | Carroll | 23 min |
| Aug 7, 6:40 PM EDT | Special Weather Statement | GYX | Hillsborough | 35 min |
| Aug 7, 7:24 PM EDT | Special Weather Statement | GYX | Rockingham | 36 min |
| Aug 8, 4:48 PM EDT | Special Weather Statement | GYX | Cheshire | 42 min |
| Aug 8, 5:15 PM EDT | Special Weather Statement | GYX | Cheshire | 30 min |
| Aug 8, 5:23 PM EDT | Areal Flood Advisory | GYX | Cheshire | 3 hr |
| Aug 8, 5:31 PM EDT | Special Weather Statement | GYX | Belknap | 29 min |
| Aug 8, 5:56 PM EDT | Special Weather Statement | GYX | Belknap | 34 min |
| Aug 8, 6:30 PM EDT | Areal Flood Advisory | GYX | Merrimack, Rockingham | 3 hr |
| Aug 8, 6:35 PM EDT | Areal Flood Advisory | GYX | Belknap, Merrimack | 3 hr |
| Aug 8, 8:06 PM EDT | Areal Flood Advisory | GYX | Coos | 114 min |
| Aug 8, 8:29 PM EDT | Flash Flood Warning | GYX | Belknap, Hillsborough, Merrimack, Rockingham, Strafford | 95 min |
| Aug 8, 8:43 PM EDT | Flash Flood Warning | GYX | Coos | 81 min |
| Aug 10, 3:03 PM EDT | Coastal Flood Statement | GYX | Rockingham | 10 hr |
| Aug 11, 3:02 PM EDT | Coastal Flood Advisory | GYX | Rockingham | 11 hr |
| Aug 11, 10:55 PM EDT | Areal Flood Advisory | GYX | Cheshire, Hillsborough | 3 hr |
| Aug 12, 2:59 PM EDT | Coastal Flood Statement | GYX | Rockingham | 14 hr |
| Aug 14, 3:02 PM EDT | Areal Flood Advisory | GYX | Hillsborough, Merrimack, Rockingham | 3 hr |
| Aug 14, 3:31 PM EDT | Areal Flood Advisory | GYX | Rockingham, Strafford | 3 hr |
| Aug 14, 3:34 PM EDT | Special Weather Statement | GYX | Strafford | 41 min |
| Aug 14, 4:08 PM EDT | Special Weather Statement | GYX | Strafford | 37 min |
| Aug 14, 5:52 PM EDT | Special Weather Statement | GYX | Rockingham | 38 min |
| Aug 15, 12:26 PM EDT | Mesoscale Discussion | SPC | Coos | 2 hr |
| Aug 15, 8:28 PM EDT | Special Weather Statement | GYX | Grafton | 32 min |
| Aug 15, 8:58 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Coos, Grafton | 27 min |
| Aug 15, 9:51 PM EDT | Special Weather Statement | GYX | Coos | 39 min |
| Aug 15, 11:15 PM EDT | Special Weather Statement | GYX | Coos | 30 min |
| Aug 15, 11:44 PM EDT | Special Weather Statement | GYX | Coos | 31 min |
| Aug 17, 5:42 PM EDT | Special Weather Statement | BTV | Sullivan | 63 min |
| Aug 17, 6:25 PM EDT | Special Weather Statement | GYX | Sullivan | 65 min |
| Aug 17, 6:32 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough | 43 min |
| Aug 17, 7:07 PM EDT | Areal Flood Advisory | GYX | Cheshire | 113 min |
| Aug 17, 7:24 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough | 51 min |
| Aug 17, 7:51 PM EDT | Tornado Warning | GYX | Cheshire, Hillsborough | 24 min |
| Aug 17, 8:15 PM EDT | Flash Flood Warning | GYX | Cheshire, Hillsborough | 6 hr |
| Aug 17, 8:17 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack | 43 min |
| Aug 17, 8:30 PM EDT | Areal Flood Advisory | GYX | Grafton | 3 hr |
| Aug 17, 8:36 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 39 min |
| Aug 17, 8:43 PM EDT | Special Weather Statement | GYX | Belknap | 62 min |
| Aug 17, 8:51 PM EDT | Flash Flood Warning | GYX | Grafton | 3 hr |
| Aug 17, 8:58 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Strafford | 23 min |
| Aug 17, 9:05 PM EDT | Areal Flood Advisory | GYX | Belknap, Carroll | 3 hr |
| Aug 17, 9:05 PM EDT | Special Weather Statement | GYX | Merrimack | 55 min |
| Aug 17, 9:48 PM EDT | Special Weather Statement | GYX | Merrimack | 27 min |
| Aug 17, 9:57 PM EDT | Areal Flood Advisory | GYX | Hillsborough, Merrimack | 3 hr |
| Aug 17, 10:36 PM EDT | Special Weather Statement | GYX | Belknap | 24 min |
| Aug 17, 11:02 PM EDT | Areal Flood Advisory | GYX | Merrimack | 118 min |
| Aug 18, 10:58 AM EDT | Special Weather Statement | GYX | Hillsborough | 32 min |
| Aug 21, 6:01 AM EDT | Dense Fog Advisory | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 3 hr |
| Aug 27, 2:59 AM EDT | Heat Advisory | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 65 hr |
| Aug 29, 2:56 PM EDT | Mesoscale Discussion | SPC | Coos, Grafton | 2 hr |
| Aug 29, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Carroll, Coos, Grafton | 5 hr |
| Aug 29, 4:59 PM EDT | Special Weather Statement | GYX | Coos | 31 min |
| Aug 29, 5:15 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 60 min |
| Aug 29, 6:11 PM EDT | Special Weather Statement | GYX | Coos | 64 min |
| Aug 29, 6:16 PM EDT | Mesoscale Discussion | SPC | Carroll, Coos, Grafton, Sullivan | 89 min |
| Aug 29, 6:16 PM EDT | Mesoscale Discussion | SPC | Carroll, Coos, Grafton, Sullivan | 89 min |
| Aug 29, 6:46 PM EDT | Special Weather Statement | GYX | Coos, Grafton | 59 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 | 18 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 36 |
| Flooding | |
| Flash Flood Warning | 8 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 16 |
| Heat | |
| Heat Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood 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.