Weather alerts in New Hampshire

10,880 weather alerts since 1986, 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 since 1986. Tap one for its archive.

Alerts: 10,880
Warnings: 3,666
Watches: 969
Advisories: 2,531
Busiest year: 2013666 alerts
Average year: 265over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

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	2,019
Tornado Warning	63
Severe Thunderstorm Watch	233
Tornado Watch	17
Mesoscale Discussion	1,033
Special Weather Statement	2,318
Flooding
Areal Flood Warning	151
Flash Flood Warning	388
River Flood Warning	361
Flash Flood Watch	83
Flood Watch	186
River Flood Watch	2
Areal Flood Advisory	728
Winter
Blizzard Warning	15
Heavy Snow Warning	19
Ice Storm Warning	5
Snow Squall Warning	51
Winter Storm Warning	236
Blizzard Watch	3
Winter Storm Watch	231
Blowing Snow Advisory	1
Freezing Rain Advisory	54
Snow Advisory	30
Winter Weather Advisory	548
Heat
Excessive Heat Warning	10
Extreme Heat Warning	2
Excessive Heat Watch	6
Extreme Heat Watch	2
Heat Advisory	107
Cold
Extreme Cold Warning	3
Freeze Warning	86
Wind Chill Warning	37
Extreme Cold Watch	2
Freeze Watch	14
Wind Chill Watch	12
Cold Weather Advisory	17
Frost Advisory	216
Wind Chill Advisory	117
Wind and dust
High Wind Warning	37
High Wind Watch	44
Wind Advisory	277
Fire
Red Flag Warning	83
Fire Weather Watch	73
Fog and smoke
Air Stagnation Advisory	4
Dense Fog Advisory	187
Tropical
Tropical Storm Warning	5
Tropical Storm Watch	7
Coast and beach
Coastal Flood Warning	87
Coastal Flood Watch	54
Coastal Flood Advisory	200
High Surf Advisory	45
Beach Hazards Statement	84
Coastal Flood Statement	264
Rip Current Statement	15
Marine
Special Marine Warning	8

By county

Every county with at least one alert. A county page lists each alert that covered it.

The latest warnings

The most recent on file, newest first.

Issued	Product	Office	Counties	Lasted
Aug 8, 7:22 PM EDT	Flash Flood Warning	GYX	Coos	2 hr
Aug 8, 4:40 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Strafford	50 min
Aug 3, 2:50 PM EDT	Severe Thunderstorm Warning	GYX	Coos	40 min
Aug 3, 2:10 PM EDT	Severe Thunderstorm Warning	GYX	Grafton	50 min
Aug 3, 7:21 AM EDT	Flash Flood Warning	GYX	Hillsborough, Merrimack, Rockingham, Strafford	4 hr
Jul 28, 3:03 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Rockingham	42 min
Jul 22, 12:44 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Rockingham	27 min
Jul 16, 5:13 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Hillsborough, Rockingham	35 min
Jul 16, 4:53 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham	26 min
Jul 16, 4:44 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Hillsborough, Rockingham	46 min
Jul 16, 3:52 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham, Strafford	38 min
Jul 16, 3:15 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Grafton, Merrimack, Strafford	45 min

Nearby

Alerts in force now Tornadoes on record The radar archive

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. Rebuilt daily.