Weather alerts in the United States, November 2011

4,822 weather alerts in November 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: 4,822
Warnings: 1,788
Watches: 411
Advisories: 1,919
Busiest day: November 16, 2011303 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	281
Tornado Warning	167
Severe Thunderstorm Watch	5
Tornado Watch	22
Mesoscale Discussion	85
Special Weather Statement	585
Flooding
Areal Flood Warning	62
Flash Flood Warning	47
River Flood Warning	203
Flash Flood Watch	17
Flood Watch	23
River Flood Watch	3
Areal Flood Advisory	180
River Flood Advisory	41
Winter
Blizzard Warning	25
Lake Effect Snow Warning	4
Winter Storm Warning	87
Blizzard Watch	14
Lake Effect Snow Watch	4
Winter Storm Watch	71
Freezing Rain Advisory	3
Lake Effect Snow Advisory	10
Winter Weather Advisory	253
Cold
Freeze Warning	60
Hard Freeze Warning	1
Freeze Watch	22
Frost Advisory	25
Wind Chill Advisory	21
Wind and dust
Dust Storm Warning	1
High Wind Warning	102
High Wind Watch	79
Blowing Dust Advisory	5
Lake Wind Advisory	72
Wind Advisory	281
Fire
Red Flag Warning	92
Fire Weather Watch	65
Fog and smoke
Air Stagnation Advisory	1
Dense Fog Advisory	121
Dense Smoke Advisory	1
Freezing Fog Advisory	1
Air Stagnation Outlook	1
Coast and beach
Coastal Flood Warning	6
Coastal Flood Watch	3
Coastal Flood Advisory	33
High Surf Advisory	36
Lakeshore Flood Advisory	2
Coastal Flood Statement	14
Lakeshore Flood Statement	1
Rip Current Statement	17
Marine
Gale Warning	378
Hazardous Seas Warning	7
Heavy Freezing Spray Warning	60
Hurricane Force Wind Warning	14
Special Marine Warning	85
Storm Warning	106
Gale Watch	72
Hazardous Seas Watch	7
Storm Watch	4
Brisk Wind Advisory	21
Low Water Advisory	6
Marine Dense Fog Advisory	14
Small Craft Advisory	638
Small Craft Advisory for Hazardous Seas	77
Small Craft Advisory for Rough Bar	34
Small Craft Advisory for Winds	43
Marine Weather Statement	1

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.