Alert archive / New Hampshire / 2011
Weather alerts in New Hampshire, April 2011
40 weather alerts in April 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 April 2011. Tap one for its archive.
- Alerts
- 40
- Warnings
- 17
- Watches
- 5
- Advisories
- 9
- Busiest day
- April 11, 20118 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 |
|---|---|---|---|---|
| Apr 1, 11:46 AM EDT | Mesoscale Discussion | SPC | Coos | 4 hr |
| Apr 4, 3:42 PM EDT | Wind Advisory | GYX | Rockingham, Strafford | 24 hr |
| Apr 5, 2:26 AM EDT | Dense Fog Advisory | BOX | Cheshire, Hillsborough | 7 hr |
| Apr 11, 3:30 AM EDT | Flood Watch | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan | 64 hr |
| Apr 11, 8:12 AM EDT | Special Weather Statement | GYX | Coos, Grafton | 93 min |
| Apr 11, 8:23 AM EDT | Severe Thunderstorm Warning | GYX | Carroll, Coos, Grafton | 52 min |
| Apr 11, 9:14 AM EDT | Special Weather Statement | GYX | Carroll | 61 min |
| Apr 11, 3:16 PM EDT | River Flood Warning | GYX | Grafton, Sullivan | 66 hr |
| Apr 11, 3:16 PM EDT | River Flood Warning | GYX | Grafton | 22 hr |
| Apr 11, 3:18 PM EDT | Special Weather Statement | GYX | Coos | 42 min |
| Apr 11, 7:53 PM EDT | River Flood Warning | GYX | Coos | 4 days |
| Apr 12, 3:47 PM EDT | Winter Weather Advisory | GYX | Carroll, Coos, Grafton | 24 hr |
| Apr 13, 7:09 PM EDT | River Flood Warning | GYX | Merrimack | 8 hr |
| Apr 14, 9:52 PM EDT | River Flood Warning | GYX | Grafton, Sullivan | 30 hr |
| Apr 15, 3:11 PM EDT | Flood Watch | GYX | Carroll, Coos, Grafton, Sullivan | 53 hr |
| Apr 15, 3:26 PM EDT | Coastal Flood Watch | GYX | Rockingham | 24 hr |
| Apr 16, 3:40 AM EDT | Wind Advisory | BOX | Hillsborough | 27 hr |
| Apr 16, 3:40 AM EDT | High Wind Watch | GYX | Rockingham | 12 hr |
| Apr 16, 3:40 AM EDT | Wind Advisory | GYX | Belknap, Carroll, Coos, Grafton, Merrimack, Rockingham and 2 more | 32 hr |
| Apr 16, 3:48 PM EDT | Coastal Flood Warning | GYX | Rockingham | 10 hr |
| Apr 16, 6:07 PM EDT | High Wind Warning | GYX | Rockingham | 18 hr |
| Apr 17, 1:43 AM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 4 hr |
| Apr 17, 6:07 AM EDT | River Flood Warning | GYX | Merrimack | 36 hr |
| Apr 17, 6:39 AM EDT | Coastal Flood Warning | GYX | Rockingham | 6 hr |
| Apr 17, 3:57 PM EDT | Coastal Flood Advisory | GYX | Rockingham | 9 hr |
| Apr 19, 3:17 PM EDT | Winter Weather Advisory | GYX | Coos | 29 hr |
| Apr 19, 9:39 PM EDT | Coastal Flood Statement | GYX | Rockingham | 16 hr |
| Apr 21, 8:46 AM EDT | Wind Advisory | GYX | Belknap, Carroll, Grafton, Merrimack, Rockingham, Strafford and 1 more | 11 hr |
| Apr 27, 12:21 AM EDT | Special Weather Statement | BOX | Cheshire | 54 min |
| Apr 27, 1:16 AM EDT | Special Weather Statement | BOX | Cheshire | 59 min |
| Apr 27, 9:10 AM EDT | Areal Flood Warning | GYX | Coos | 12 hr |
| Apr 27, 1:09 PM EDT | River Flood Warning | GYX | Coos | 32 hr |
| Apr 27, 1:22 PM EDT | River Flood Warning | GYX | Coos | 4 days |
| Apr 27, 3:16 PM EDT | Flood Watch | GYX | Carroll, Coos, Grafton, Sullivan | 29 hr |
| Apr 27, 8:41 PM EDT | River Flood Warning | GYX | Grafton | 3 days |
| Apr 27, 8:41 PM EDT | River Flood Warning | GYX | Grafton, Sullivan | 4 days |
| Apr 28, 8:45 AM EDT | Special Weather Statement | GYX | Coos, Grafton | 60 min |
| Apr 28, 11:10 AM EDT | River Flood Warning | GYX | Grafton | 12 hr |
| Apr 28, 11:10 AM EDT | River Flood Warning | GYX | Coos | 50 hr |
| Apr 28, 9:54 PM EDT | Special Weather Statement | GYX | Grafton | 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 | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 7 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 12 |
| Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Weather Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Warning | 2 |
| Coastal Flood Watch | 1 |
| Coastal Flood 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 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.