Weather alerts in the United States, February 2011

5,663 weather alerts in February 2011, from the National Weather Service and the Storm Prediction Center. Each alert counts once, however many counties it covered.

Weather alerts by state

Each state shaded by its count. Tap a state for its own archive.

Alerts: 5,663
Warnings: 2,268
Watches: 557
Advisories: 2,319
Busiest day: February 28, 2011754 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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	456
Tornado Warning	158
Severe Thunderstorm Watch	6
Tornado Watch	20
Mesoscale Discussion	123
Special Weather Statement	386
Flooding
Areal Flood Warning	63
Flash Flood Warning	61
River Flood Warning	310
Flash Flood Watch	14
Flood Watch	34
River Flood Watch	26
Areal Flood Advisory	173
River Flood Advisory	70
Hydrologic Statement	2
Winter
Blizzard Warning	41
Ice Storm Warning	6
Lake Effect Snow Warning	6
Winter Storm Warning	217
Blizzard Watch	7
Lake Effect Snow Watch	4
Winter Storm Watch	162
Freezing Rain Advisory	32
Lake Effect Snow Advisory	20
Winter Weather Advisory	465
Cold
Freeze Warning	41
Hard Freeze Warning	44
Wind Chill Warning	40
Freeze Watch	16
Hard Freeze Watch	10
Wind Chill Watch	5
Frost Advisory	14
Wind Chill Advisory	205
Wind and dust
Dust Storm Warning	4
High Wind Warning	111
High Wind Watch	69
Blowing Dust Advisory	5
Lake Wind Advisory	40
Wind Advisory	311
Fire
Red Flag Warning	131
Fire Weather Watch	98
Fog and smoke
Air Stagnation Advisory	1
Dense Fog Advisory	158
Dense Smoke Advisory	3
Freezing Fog Advisory	2
Coast and beach
Coastal Flood Warning	1
High Surf Warning	2
Lakeshore Flood Warning	2
Coastal Flood Watch	1
Coastal Flood Advisory	4
High Surf Advisory	20
Lakeshore Flood Advisory	1
Coastal Flood Statement	8
Marine
Gale Warning	359
Hazardous Seas Warning	9
Heavy Freezing Spray Warning	66
Hurricane Force Wind Warning	7
Special Marine Warning	64
Storm Warning	69
Gale Watch	68
Hazardous Seas Watch	6
Heavy Freezing Spray Watch	1
Storm Watch	10
Brisk Wind Advisory	54
Heavy Freezing Spray Advisory	2
Low Water Advisory	6
Marine Dense Fog Advisory	87
Marine Dense Smoke Advisory	1
Small Craft Advisory	515
Small Craft Advisory for Hazardous Seas	46
Small Craft Advisory for Rough Bar	31
Small Craft Advisory for Winds	53

By state

Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.

14 more states

Nearby

Alerts in force now The tornado archive The radar archive 2010 2012

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.