Weather alerts in the United States, April 2013

8,152 weather alerts in April 2013, 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: 8,152
Warnings: 3,408
Watches: 453
Advisories: 1,912
Busiest day: April 17, 2013741 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	1,249
Tornado Warning	189
Severe Thunderstorm Watch	36
Tornado Watch	35
Mesoscale Discussion	226
Special Weather Statement	2,113
Flooding
Areal Flood Warning	97
Flash Flood Warning	138
River Flood Warning	721
Flash Flood Watch	23
Flood Watch	32
River Flood Watch	71
Areal Flood Advisory	282
River Flood Advisory	169
Winter
Blizzard Warning	14
Ice Storm Warning	6
Lake Effect Snow Warning	1
Winter Storm Warning	76
Blizzard Watch	6
Winter Storm Watch	56
Freezing Rain Advisory	16
Lake Effect Snow Advisory	5
Winter Weather Advisory	213
Cold
Freeze Warning	83
Hard Freeze Warning	20
Freeze Watch	27
Hard Freeze Watch	5
Frost Advisory	101
Wind Chill Advisory	2
Wind and dust
High Wind Warning	49
High Wind Watch	32
Blowing Dust Advisory	5
Lake Wind Advisory	39
Wind Advisory	225
Fire
Red Flag Warning	122
Fire Weather Watch	78
Fog and smoke
Dense Fog Advisory	78
Dense Smoke Advisory	1
Freezing Fog Advisory	1
Coast and beach
High Surf Warning	2
Lakeshore Flood Watch	1
Coastal Flood Advisory	15
High Surf Advisory	13
Beach Hazards Statement	7
Coastal Flood Statement	10
Rip Current Statement	23
Marine
Gale Warning	197
Hazardous Seas Warning	11
Heavy Freezing Spray Warning	34
Special Marine Warning	391
Storm Warning	8
Gale Watch	46
Hazardous Seas Watch	4
Storm Watch	1
Brisk Wind Advisory	35
Low Water Advisory	3
Marine Dense Fog Advisory	28
Small Craft Advisory	577
Small Craft Advisory for Hazardous Seas	41
Small Craft Advisory for Rough Bar	22
Small Craft Advisory for Winds	41

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 2012 2014

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.