Alert archive / New Hampshire / 2011
Weather alerts in New Hampshire, September 2011
54 weather alerts in September 2011, 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 2011. Tap one for its archive.
- Alerts
- 54
- Warnings
- 10
- Watches
- 6
- Advisories
- 16
- Busiest day
- September 4, 201117 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 4, 3:46 AM EDT | Flood Watch | GYX | Carroll, Coos, Grafton | 18 hr |
| Sep 4, 12:17 PM EDT | Mesoscale Discussion | SPC | Coos | 58 min |
| Sep 4, 1:01 PM EDT | Severe Thunderstorm Watch | SPC | Carroll, Coos, Grafton | 7 hr |
| Sep 4, 1:13 PM EDT | Severe Thunderstorm Warning | GYX | Coos, Grafton | 47 min |
| Sep 4, 1:19 PM EDT | Special Weather Statement | GYX | Coos | 56 min |
| Sep 4, 1:35 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 55 min |
| Sep 4, 1:41 PM EDT | Special Weather Statement | GYX | Sullivan | 64 min |
| Sep 4, 1:43 PM EDT | Special Weather Statement | BOX | Cheshire | 32 min |
| Sep 4, 1:57 PM EDT | Severe Thunderstorm Warning | GYX | Coos, Grafton | 63 min |
| Sep 4, 2:24 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 66 min |
| Sep 4, 4:07 PM EDT | Mesoscale Discussion | SPC | Belknap, Carroll, Coos, Grafton | 53 min |
| Sep 4, 4:24 PM EDT | Special Weather Statement | GYX | Coos | 66 min |
| Sep 4, 5:03 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 57 min |
| Sep 4, 5:20 PM EDT | Areal Flood Advisory | GYX | Coos | 115 min |
| Sep 4, 6:37 PM EDT | Areal Flood Advisory | GYX | Coos | 113 min |
| Sep 4, 7:20 PM EDT | Special Weather Statement | GYX | Merrimack, Sullivan | 55 min |
| Sep 4, 7:58 PM EDT | Special Weather Statement | BOX | Hillsborough | 32 min |
| Sep 4, 8:21 PM EDT | Special Weather Statement | GYX | Grafton | 39 min |
| Sep 4, 8:25 PM EDT | Special Weather Statement | BOX | Cheshire | 50 min |
| Sep 4, 9:04 PM EDT | Special Weather Statement | BOX | Hillsborough | 26 min |
| Sep 4, 9:23 PM EDT | Flash Flood Watch | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan | 29 hr |
| Sep 4, 9:40 PM EDT | Areal Flood Advisory | GYX | Carroll, Coos, Grafton | 3 hr |
| Sep 5, 3:51 AM EDT | Flash Flood Watch | BOX | Cheshire, Hillsborough | 24 hr |
| Sep 5, 4:02 AM EDT | Special Weather Statement | BOX | Cheshire | 58 min |
| Sep 5, 4:36 AM EDT | Special Weather Statement | GYX | Merrimack | 54 min |
| Sep 5, 5:20 AM EDT | Special Weather Statement | GYX | Belknap, Carroll, Grafton, Merrimack | 40 min |
| Sep 5, 5:31 AM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Strafford | 44 min |
| Sep 5, 6:14 AM EDT | Special Weather Statement | GYX | Carroll | 46 min |
| Sep 5, 5:42 PM EDT | Areal Flood Advisory | GYX | Belknap, Grafton, Merrimack, Sullivan | 3 hr |
| Sep 5, 5:48 PM EDT | Areal Flood Advisory | BOX | Cheshire | 3 hr |
| Sep 5, 6:55 PM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Coos, Grafton, Strafford | 3 hr |
| Sep 5, 8:46 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 12 hr |
| Sep 7, 7:34 AM EDT | Areal Flood Warning | BOX | Cheshire | 6 hr |
| Sep 7, 4:02 PM EDT | Flood Watch | BOX | Cheshire | 20 hr |
| Sep 10, 9:07 AM EDT | Frost Advisory | GYX | Coos | 22 hr |
| Sep 13, 3:22 PM EDT | Mesoscale Discussion | SPC | Coos | 83 min |
| Sep 14, 12:33 AM EDT | Areal Flood Advisory | GYX | Coos | 117 min |
| Sep 15, 7:31 AM EDT | Special Weather Statement | GYX | Merrimack | 44 min |
| Sep 15, 7:57 AM EDT | Severe Thunderstorm Warning | GYX | Belknap, Merrimack, Rockingham, Strafford | 33 min |
| Sep 15, 7:19 PM EDT | Freeze Watch | GYX | Coos, Grafton | 8 hr |
| Sep 16, 3:06 AM EDT | Frost Advisory | GYX | Belknap, Carroll, Grafton, Merrimack, Rockingham, Strafford and 1 more | 29 hr |
| Sep 16, 3:06 AM EDT | Freeze Warning | GYX | Carroll, Coos, Grafton | 29 hr |
| Sep 16, 3:30 PM EDT | Frost Advisory | BOX | Cheshire, Hillsborough | 17 hr |
| Sep 17, 2:56 PM EDT | Frost Advisory | GYX | Belknap, Carroll, Grafton, Merrimack, Rockingham, Strafford and 1 more | 17 hr |
| Sep 23, 4:24 AM EDT | Dense Fog Advisory | BOX | Hillsborough | 4 hr |
| Sep 29, 11:16 AM EDT | Coastal Flood Warning | GYX | Rockingham | 4 hr |
| Sep 29, 11:22 AM EDT | Mesoscale Discussion | SPC | Cheshire | 83 min |
| Sep 29, 4:58 PM EDT | Special Weather Statement | BOX | Hillsborough | 62 min |
| Sep 29, 5:47 PM EDT | Areal Flood Advisory | BOX | Hillsborough | 115 min |
| Sep 29, 5:51 PM EDT | Special Weather Statement | GYX | Rockingham | 54 min |
| Sep 29, 5:56 PM EDT | Special Weather Statement | BOX | Cheshire, Hillsborough | 64 min |
| Sep 29, 6:44 PM EDT | Special Weather Statement | GYX | Belknap, Carroll, Strafford | 46 min |
| Sep 29, 7:53 PM EDT | Areal Flood Advisory | GYX | Carroll | 112 min |
| Sep 30, 12:47 PM EDT | Coastal Flood Advisory | GYX | Rockingham | 2 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 | 7 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 2 |
| Areal Flood Advisory | 10 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| Coastal Flood 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 archive20102012
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.