Alert archive / New Hampshire / 2009
Weather alerts in New Hampshire, August 2009
47 weather alerts in August 2009, 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 2009. Tap one for its archive.
- Alerts
- 47
- Warnings
- 21
- Watches
- 2
- Advisories
- 19
- Busiest day
- August 21, 200926 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 5, 2:16 PM EDT | Mesoscale Discussion | SPC | Cheshire, Hillsborough, Merrimack, Rockingham, Strafford | 59 min |
| Aug 11, 6:58 AM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack | 47 min |
| Aug 11, 7:37 AM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack, Rockingham, Strafford | 53 min |
| Aug 11, 2:39 PM EDT | Severe Thunderstorm Warning | GYX | Carroll | 36 min |
| Aug 12, 3:47 PM EDT | Areal Flood Advisory | GYX | Coos | 118 min |
| Aug 12, 6:36 PM EDT | Areal Flood Advisory | GYX | Grafton | 114 min |
| Aug 12, 7:44 PM EDT | Areal Flood Advisory | GYX | Grafton | 2 hr |
| Aug 13, 4:18 PM EDT | Areal Flood Advisory | GYX | Coos, Grafton | 3 hr |
| Aug 20, 3:17 PM EDT | Coastal Flood Statement | GYX | Rockingham | 11 hr |
| Aug 21, 10:01 AM EDT | Mesoscale Discussion | SPC | Cheshire, Grafton, Sullivan | 119 min |
| Aug 21, 10:47 AM EDT | Severe Thunderstorm Watch | SPC | Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more | 7 hr |
| Aug 21, 1:58 PM EDT | Mesoscale Discussion | SPC | Cheshire, Grafton, Hillsborough, Merrimack, Sullivan | 92 min |
| Aug 21, 2:09 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Sullivan | 36 min |
| Aug 21, 2:53 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Merrimack, Sullivan | 37 min |
| Aug 21, 3:07 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 38 min |
| Aug 21, 3:20 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 55 min |
| Aug 21, 3:27 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Grafton, Merrimack | 33 min |
| Aug 21, 3:27 PM EDT | Severe Thunderstorm Warning | GYX | Coos, Grafton | 48 min |
| Aug 21, 3:33 PM EDT | Severe Thunderstorm Warning | GYX | Carroll | 42 min |
| Aug 21, 3:39 PM EDT | Areal Flood Advisory | GYX | Carroll, Coos, Grafton | 3 hr |
| Aug 21, 3:45 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 60 min |
| Aug 21, 3:55 PM EDT | Areal Flood Advisory | GYX | Carroll | 3 hr |
| Aug 21, 4:02 PM EDT | Flash Flood Warning | GYX | Grafton | 3 hr |
| Aug 21, 4:05 PM EDT | Areal Flood Advisory | GYX | Belknap, Merrimack, Sullivan | 3 hr |
| Aug 21, 4:05 PM EDT | Severe Thunderstorm Warning | GYX | Carroll | 25 min |
| Aug 21, 4:22 PM EDT | Tornado Watch | SPC | Belknap, Carroll, Cheshire, Hillsborough, Merrimack, Rockingham and 1 more | 3 hr |
| Aug 21, 4:30 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Coos | 25 min |
| Aug 21, 4:34 PM EDT | Areal Flood Advisory | BOX | Cheshire | 116 min |
| Aug 21, 4:45 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 60 min |
| Aug 21, 4:48 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll | 45 min |
| Aug 21, 5:45 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 52 min |
| Aug 21, 5:55 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Cheshire, Hillsborough, Merrimack, Rockingham and 1 more | 80 min |
| Aug 21, 6:02 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 118 min |
| Aug 21, 6:49 PM EDT | Severe Thunderstorm Warning | BOX | Hillsborough | 41 min |
| Aug 21, 7:25 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 35 min |
| Aug 22, 4:22 AM EDT | Coastal Flood Advisory | GYX | Rockingham | 35 hr |
| Aug 22, 12:23 PM EDT | Areal Flood Advisory | GYX | Rockingham, Strafford | 3 hr |
| Aug 22, 12:48 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 42 min |
| Aug 22, 2:18 PM EDT | Areal Flood Advisory | BOX | Hillsborough | 117 min |
| Aug 22, 3:21 PM EDT | Areal Flood Advisory | GYX | Rockingham, Strafford | 3 hr |
| Aug 22, 3:36 PM EDT | High Surf Advisory | GYX | Rockingham | 27 hr |
| Aug 22, 5:16 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 119 min |
| Aug 22, 6:15 PM EDT | Flash Flood Warning | BOX | Cheshire, Hillsborough | 2 hr |
| Aug 23, 2:50 PM EDT | Areal Flood Advisory | GYX | Carroll | 3 hr |
| Aug 23, 5:31 PM EDT | Areal Flood Advisory | GYX | Carroll | 3 hr |
| Aug 23, 5:43 PM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Merrimack, Strafford | 3 hr |
| Aug 31, 3:47 PM EDT | Frost Advisory | GYX | Carroll, Coos, Grafton, Sullivan | 16 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 | 19 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 4 |
| Flooding | |
| Flash Flood Warning | 2 |
| Areal Flood Advisory | 16 |
| Cold | |
| Frost Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
| High Surf Advisory | 1 |
| Coastal Flood 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 archive20082010
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.