Weather alerts in the United States, 2020

119,676 weather alerts in 2020, 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: 119,676
Warnings: 41,317
Watches: 4,403
Advisories: 24,047
Busiest month: July20,614 alerts
Busiest day: June 21, 20201,021 alerts

Over time

By month

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Extreme Wind Warning	3
Severe Thunderstorm Warning	17,436
Tornado Warning	2,120
Severe Thunderstorm Watch	370
Tornado Watch	153
Mesoscale Discussion	1,897
Special Weather Statement	46,604
Flooding
Areal Flood Warning	1,746
Flash Flood Warning	2,878
River Flood Warning	4,599
Flash Flood Watch	559
Flood Watch	212
River Flood Watch	146
Areal Flood Advisory	7,416
River Flood Advisory	674
Winter
Blizzard Warning	96
Ice Storm Warning	14
Lake Effect Snow Warning	18
Snow Squall Warning	165
Winter Storm Warning	549
Winter Storm Watch	500
Winter Weather Advisory	1,996
Heat
Excessive Heat Warning	148
Excessive Heat Watch	87
Heat Advisory	647
Cold
Freeze Warning	608
Hard Freeze Warning	41
Wind Chill Warning	32
Freeze Watch	235
Hard Freeze Watch	27
Wind Chill Watch	1
Frost Advisory	667
Wind Chill Advisory	253
Wind and dust
Blowing Dust Warning	3
Dust Storm Warning	48
High Wind Warning	569
High Wind Watch	376
Blowing Dust Advisory	31
Dust Storm Advisory	85
Lake Wind Advisory	300
Wind Advisory	1,835
Fire
Red Flag Warning	1,136
Fire Weather Watch	735
Fog and smoke
Air Stagnation Advisory	16
Dense Fog Advisory	1,576
Dense Smoke Advisory	18
Freezing Fog Advisory	75
Tropical
Hurricane Warning	19
Storm Surge Warning	25
Tropical Storm Warning	75
Hurricane Watch	22
Storm Surge Watch	30
Tropical Storm Watch	66
Coast and beach
Coastal Flood Warning	71
High Surf Warning	28
Lakeshore Flood Warning	100
Tsunami Warning	2
Coastal Flood Watch	50
Lakeshore Flood Watch	43
Tsunami Watch	1
Coastal Flood Advisory	717
High Surf Advisory	279
Lakeshore Flood Advisory	221
Tsunami Advisory	3
Beach Hazards Statement	504
Coastal Flood Statement	289
Lakeshore Flood Statement	33
Rip Current Statement	582
Marine
Gale Warning	2,371
Hazardous Seas Warning	104
Heavy Freezing Spray Warning	314
Hurricane Force Wind Warning	19
Special Marine Warning	5,596
Storm Warning	384
Gale Watch	708
Hazardous Seas Watch	50
Heavy Freezing Spray Watch	3
Storm Watch	29
Brisk Wind Advisory	298
Heavy Freezing Spray Advisory	8
Low Water Advisory	56
Marine Dense Fog Advisory	388
Small Craft Advisory	6,488

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now The tornado archive The radar archive 2019 2021

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.