Alert archive / New Hampshire / River Flood Warnings
River Flood Warnings in New Hampshire, 2011
53 river flood warnings in 2011. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- River Flood Warnings
- 53
- Busiest month
- August20 river flood warnings
- Busiest day
- August 28, 201117 river flood warnings
Over time
By month
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 |
|---|---|---|---|---|
| Mar 6, 9:53 PM EST | River Flood Warning | GYX | Grafton | 8 hr |
| Mar 6, 10:01 PM EST | River Flood Warning | GYX | Grafton, Sullivan | 12 hr |
| Mar 7, 1:59 AM EST | River Flood Warning | BOX | Cheshire, Hillsborough | 35 hr |
| Mar 7, 8:48 AM EST | River Flood Warning | GYX | Sullivan | 3 days |
| Mar 7, 8:50 AM EST | River Flood Warning | BOX | Hillsborough | 14 hr |
| Mar 7, 8:50 AM EST | River Flood Warning | BOX | Hillsborough | 3 days |
| Mar 7, 9:33 AM EST | River Flood Warning | GYX | Merrimack | 7 days |
| Mar 7, 9:35 AM EST | River Flood Warning | BOX | Hillsborough | 13 hr |
| Mar 7, 9:55 AM EST | River Flood Warning | GYX | Grafton | 35 hr |
| Mar 7, 10:13 AM EST | River Flood Warning | GYX | Grafton | 10 hr |
| Mar 11, 4:04 PM EST | River Flood Warning | GYX | Sullivan | 43 hr |
| Mar 19, 12:40 AM EDT | River Flood Warning | GYX | Merrimack | 43 hr |
| 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, 7:53 PM EDT | River Flood Warning | GYX | Coos | 4 days |
| 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 17, 6:07 AM EDT | River Flood Warning | GYX | Merrimack | 36 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, 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, 11:10 AM EDT | River Flood Warning | GYX | Grafton | 12 hr |
| Apr 28, 11:10 AM EDT | River Flood Warning | GYX | Coos | 50 hr |
| May 27, 1:39 PM EDT | River Flood Warning | GYX | Coos | 15 hr |
| May 27, 1:39 PM EDT | River Flood Warning | GYX | Coos | 38 hr |
| May 27, 1:39 PM EDT | River Flood Warning | GYX | Grafton | 15 hr |
| May 27, 1:39 PM EDT | River Flood Warning | GYX | Grafton, Sullivan | 15 hr |
| May 28, 4:44 AM EDT | River Flood Warning | GYX | Coos | 5 days |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Coos | 26 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton | 18 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton, Sullivan | 30 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton | 17 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton | 35 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Carroll | 26 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Belknap, Grafton, Merrimack | 11 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Merrimack | 26 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Sullivan | 16 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Merrimack | 11 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton | 15 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Merrimack | 11 hr |
| Aug 28, 1:16 PM EDT | River Flood Warning | GYX | Grafton | 13 hr |
| Aug 28, 1:38 PM EDT | River Flood Warning | BOX | Cheshire, Hillsborough | 5 hr |
| Aug 28, 1:38 PM EDT | River Flood Warning | BOX | Hillsborough | 5 hr |
| Aug 28, 3:46 PM EDT | River Flood Warning | BOX | Cheshire | 28 hr |
| Aug 28, 5:24 PM EDT | River Flood Warning | GYX | Merrimack | 29 hr |
| Aug 29, 12:32 AM EDT | River Flood Warning | GYX | Merrimack | 14 hr |
| Aug 29, 1:29 AM EDT | River Flood Warning | GYX | Coos | 7 hr |
| Aug 29, 9:00 AM EDT | River Flood Warning | GYX | Belknap, Grafton, Merrimack | 10 hr |
| Oct 15, 2:10 AM EDT | River Flood Warning | GYX | Carroll | 9 hr |
| Nov 30, 7:20 AM EST | River Flood Warning | GYX | Grafton | 4 hr |
| Nov 30, 7:20 AM EST | River Flood Warning | GYX | Carroll | 9 hr |
| Dec 8, 2:32 AM EST | River Flood Warning | GYX | Merrimack | 35 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
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.