Alert archive / New Hampshire / 2020
Weather alerts in New Hampshire, August 2020
98 weather alerts in August 2020, 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 2020. Tap one for its archive.
- Alerts
- 98
- Warnings
- 24
- Watches
- 5
- Advisories
- 10
- Busiest day
- August 24, 202031 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 3, 5:41 AM EDT | Tropical Storm Watch | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 35 hr |
| Aug 3, 1:57 PM EDT | Flash Flood Watch | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 2 more | 32 hr |
| Aug 3, 5:33 PM EDT | Tropical Storm Warning | GYX | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 33 hr |
| Aug 4, 3:19 AM EDT | Coastal Flood Advisory | GYX | Rockingham | 23 hr |
| Aug 4, 9:16 AM EDT | Special Weather Statement | GYX | Cheshire | 29 min |
| Aug 4, 9:22 AM EDT | Tornado Warning | GYX | Cheshire, Sullivan | 23 min |
| Aug 4, 9:54 AM EDT | Special Weather Statement | GYX | Sullivan | 66 min |
| Aug 4, 10:25 AM EDT | Special Weather Statement | GYX | Sullivan | 35 min |
| Aug 4, 10:57 AM EDT | Special Weather Statement | GYX | Grafton | 48 min |
| Aug 4, 11:34 AM EDT | Mesoscale Discussion | SPC | Cheshire | 86 min |
| Aug 4, 11:52 AM EDT | Special Weather Statement | GYX | Coos | 53 min |
| Aug 4, 12:43 PM EDT | Tornado Watch | SPC | Cheshire, Hillsborough, Merrimack, Rockingham, Strafford, Sullivan | 6 hr |
| Aug 4, 2:06 PM EDT | Tornado Warning | GYX | Cheshire, Hillsborough | 24 min |
| Aug 4, 2:49 PM EDT | Tornado Warning | GYX | Cheshire, Sullivan | 26 min |
| Aug 4, 3:05 PM EDT | Mesoscale Discussion | SPC | Cheshire, Hillsborough | 85 min |
| Aug 4, 3:11 PM EDT | Tornado Warning | GYX | Sullivan | 22 min |
| Aug 4, 5:44 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Hillsborough, Merrimack, Rockingham, Strafford | 2 hr |
| Aug 8, 7:11 AM EDT | Special Weather Statement | GYX | Sullivan | 49 min |
| Aug 8, 7:57 AM EDT | Special Weather Statement | GYX | Sullivan | 48 min |
| Aug 8, 8:54 AM EDT | Special Weather Statement | GYX | Sullivan | 51 min |
| Aug 8, 5:36 PM EDT | Special Weather Statement | GYX | Grafton | 39 min |
| Aug 10, 3:27 PM EDT | Heat Advisory | GYX | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 29 hr |
| Aug 15, 3:08 PM EDT | High Surf Advisory | GYX | Rockingham | 51 hr |
| Aug 19, 4:36 PM EDT | Special Weather Statement | GYX | Strafford | 24 min |
| Aug 19, 4:54 PM EDT | Special Weather Statement | GYX | Rockingham | 36 min |
| Aug 19, 4:57 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham | 48 min |
| Aug 21, 2:26 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Grafton, Sullivan | 2 hr |
| Aug 21, 5:11 PM EDT | Special Weather Statement | GYX | Sullivan | 34 min |
| Aug 22, 9:39 AM EDT | Special Weather Statement | GYX | Cheshire, Hillsborough | 51 min |
| Aug 22, 12:23 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll | 52 min |
| Aug 22, 12:40 PM EDT | Tornado Warning | GYX | Belknap, Carroll, Strafford | 35 min |
| Aug 22, 1:07 PM EDT | Special Weather Statement | GYX | Strafford | 38 min |
| Aug 22, 1:18 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Hillsborough, Merrimack, Rockingham and 2 more | 87 min |
| Aug 22, 1:38 PM EDT | Special Weather Statement | GYX | Grafton | 37 min |
| Aug 23, 1:42 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 48 min |
| Aug 23, 1:56 PM EDT | Severe Thunderstorm Warning | GYX | Merrimack, Rockingham, Strafford | 64 min |
| Aug 23, 1:59 PM EDT | Areal Flood Advisory | GYX | Merrimack, Rockingham | 61 min |
| Aug 23, 2:05 PM EDT | Special Weather Statement | GYX | Cheshire | 55 min |
| Aug 23, 2:08 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 2 hr |
| Aug 23, 2:20 PM EDT | Areal Flood Advisory | GYX | Cheshire | 115 min |
| Aug 23, 2:21 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 54 min |
| Aug 23, 2:28 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham | 13 min |
| Aug 23, 3:00 PM EDT | Special Weather Statement | GYX | Rockingham | 45 min |
| Aug 23, 3:03 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 42 min |
| Aug 23, 3:09 PM EDT | Special Weather Statement | GYX | Strafford | 51 min |
| Aug 23, 3:16 PM EDT | Areal Flood Advisory | GYX | Cheshire, Hillsborough | 119 min |
| Aug 23, 3:16 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough | 23 min |
| Aug 23, 3:45 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 32 min |
| Aug 23, 4:04 PM EDT | Special Weather Statement | GYX | Strafford | 41 min |
| Aug 23, 8:04 PM EDT | Special Weather Statement | GYX | Cheshire | 41 min |
| Aug 23, 8:16 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 26 min |
| Aug 23, 8:31 PM EDT | Areal Flood Advisory | GYX | Cheshire | 76 min |
| Aug 23, 8:37 PM EDT | Special Weather Statement | GYX | Cheshire, Sullivan | 38 min |
| Aug 23, 8:40 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Sullivan | 50 min |
| Aug 23, 9:14 PM EDT | Special Weather Statement | GYX | Sullivan | 46 min |
| Aug 23, 9:31 PM EDT | Special Weather Statement | GYX | Grafton | 44 min |
| Aug 23, 9:58 PM EDT | Special Weather Statement | GYX | Merrimack | 47 min |
| Aug 23, 10:17 PM EDT | Special Weather Statement | GYX | Sullivan | 58 min |
| Aug 23, 10:19 PM EDT | Special Weather Statement | GYX | Grafton | 41 min |
| Aug 23, 10:32 PM EDT | Special Weather Statement | GYX | Rockingham | 58 min |
| Aug 23, 10:41 PM EDT | Special Weather Statement | GYX | Grafton | 49 min |
| Aug 23, 10:48 PM EDT | Areal Flood Advisory | GYX | Merrimack, Sullivan | 117 min |
| Aug 23, 10:57 PM EDT | Special Weather Statement | GYX | Carroll | 48 min |
| Aug 24, 2:00 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 2 hr |
| Aug 24, 2:33 PM EDT | Special Weather Statement | GYX | Sullivan | 42 min |
| Aug 24, 2:36 PM EDT | Special Weather Statement | GYX | Cheshire | 24 min |
| Aug 24, 2:38 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 33 min |
| Aug 24, 3:24 PM EDT | Special Weather Statement | GYX | Carroll | 51 min |
| Aug 24, 3:38 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham | 52 min |
| Aug 24, 3:41 PM EDT | Special Weather Statement | GYX | Rockingham | 49 min |
| Aug 24, 3:54 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 25 min |
| Aug 24, 4:18 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 57 min |
| Aug 24, 4:23 PM EDT | Areal Flood Advisory | GYX | Hillsborough, Rockingham | 3 hr |
| Aug 24, 4:36 PM EDT | Flash Flood Warning | GYX | Hillsborough, Rockingham | 50 min |
| Aug 24, 4:42 PM EDT | Special Weather Statement | GYX | Coos, Grafton | 48 min |
| Aug 24, 5:08 PM EDT | Special Weather Statement | GYX | Coos | 37 min |
| Aug 24, 5:26 PM EDT | Areal Flood Advisory | GYX | Hillsborough, Rockingham | 2 hr |
| Aug 24, 5:29 PM EDT | Special Weather Statement | GYX | Carroll | 61 min |
| Aug 24, 6:04 PM EDT | Special Weather Statement | GYX | Merrimack | 41 min |
| Aug 24, 6:29 PM EDT | Severe Thunderstorm Warning | GYX | Merrimack, Rockingham | 13 min |
| Aug 24, 8:48 PM EDT | Special Weather Statement | GYX | Belknap | 42 min |
| Aug 24, 9:27 PM EDT | Special Weather Statement | GYX | Carroll | 33 min |
| Aug 25, 2:09 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Grafton, Hillsborough, Merrimack and 3 more | 96 min |
| Aug 25, 3:10 PM EDT | Special Weather Statement | GYX | Belknap | 35 min |
| Aug 25, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | Belknap, Cheshire, Hillsborough, Merrimack, Rockingham, Strafford and 1 more | 5 hr |
| Aug 25, 3:32 PM EDT | Special Weather Statement | GYX | Carroll | 28 min |
| Aug 25, 3:55 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Strafford | 50 min |
| Aug 25, 4:25 PM EDT | Special Weather Statement | BTV | Sullivan | 20 min |
| Aug 25, 4:46 PM EDT | Special Weather Statement | GYX | Merrimack, Sullivan | 29 min |
| Aug 25, 5:02 PM EDT | Special Weather Statement | GYX | Rockingham | 13 min |
| Aug 25, 6:11 PM EDT | Mesoscale Discussion | SPC | Hillsborough | 2 hr |
| Aug 29, 1:36 PM EDT | Mesoscale Discussion | SPC | Cheshire, Sullivan | 114 min |
| Aug 29, 6:45 PM EDT | Mesoscale Discussion | SPC | Cheshire, Hillsborough, Sullivan | 2 hr |
| Aug 29, 7:13 PM EDT | Severe Thunderstorm Watch | SPC | Cheshire | 3 hr |
| Aug 29, 8:35 PM EDT | Special Weather Statement | GYX | Grafton | 25 min |
| Aug 29, 9:03 PM EDT | Special Weather Statement | GYX | Merrimack, Sullivan | 27 min |
| Aug 29, 9:31 PM EDT | Special Weather Statement | GYX | Belknap | 29 min |
| Aug 29, 10:21 PM EDT | Special Weather Statement | GYX | Carroll | 24 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 | 17 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 48 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Heat | |
| Heat Advisory | 1 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
| High Surf Advisory | 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 archive20192021
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.