Alert archive

Weather alerts in the United States, 2009

85,955 weather alerts in 2009, 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.

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Alerts
85,955
Warnings
44,996
Watches
4,936
Advisories
23,494
Busiest month
June13,255 alerts
Busiest day
June 18, 2009821 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.

ProductAlerts
Severe storms
Extreme Wind Warning1
Severe Thunderstorm Warning20,868
Tornado Warning3,231
Severe Thunderstorm Watch530
Tornado Watch283
Mesoscale Discussion2,303
Special Weather Statement9,665
Flooding
Areal Flood Warning1,476
Flash Flood Warning3,924
River Flood Warning4,431
Flash Flood Watch632
Flood Watch274
River Flood Watch173
Areal Flood Advisory7,475
River Flood Advisory562
Hydrologic Statement2
River Flood Statement1
Winter
Blizzard Warning177
Ice Storm Warning35
Lake Effect Snow Warning63
Winter Storm Warning779
Blizzard Watch102
Lake Effect Snow Watch27
Winter Storm Watch719
Freezing Rain Advisory177
Lake Effect Snow Advisory133
Winter Weather Advisory2,037
Heat
Excessive Heat Warning38
Excessive Heat Watch19
Heat Advisory217
Cold
Freeze Warning550
Hard Freeze Warning69
Wind Chill Warning68
Freeze Watch242
Hard Freeze Watch36
Wind Chill Watch11
Frost Advisory575
Wind Chill Advisory427
Wind and dust
Dust Storm Warning22
High Wind Warning547
High Wind Watch297
Blowing Dust Advisory21
Lake Wind Advisory555
Wind Advisory1,855
Fire
Red Flag Warning1,285
Fire Weather Watch948
Fog and smoke
Air Stagnation Advisory16
Ashfall Advisory11
Dense Fog Advisory1,233
Dense Smoke Advisory18
Freezing Fog Advisory80
Air Stagnation Outlook1
Tropical
Hurricane Warning7
Inland Hurricane Warning2
Inland Tropical Storm Warning6
Tropical Storm Warning22
Typhoon Warning1
Hurricane Watch6
Inland Hurricane Watch2
Inland Tropical Storm Watch3
Tropical Storm Watch20
Typhoon Watch2
Hurricane Local Statement4
Coast and beach
Coastal Flood Warning58
High Surf Warning19
Lakeshore Flood Warning5
Coastal Flood Watch53
Lakeshore Flood Watch2
Coastal Flood Advisory254
High Surf Advisory257
Lakeshore Flood Advisory4
Coastal Flood Statement297
Lakeshore Flood Statement66
Marine
Gale Warning2,442
Hazardous Seas Warning90
Heavy Freezing Spray Warning329
Hurricane Force Wind Warning20
Special Marine Warning4,026
Storm Warning405
Gale Watch467
Hazardous Seas Watch58
Heavy Freezing Spray Watch12
Hurricane Force Wind Watch1
Storm Watch17
Brisk Wind Advisory322
Heavy Freezing Spray Advisory3
Low Water Advisory38
Marine Dense Fog Advisory173
Marine Dense Smoke Advisory1
Small Craft Advisory5,623
Small Craft Advisory for Hazardous Seas646
Small Craft Advisory for Rough Bar274
Small Craft Advisory for Winds507
Marine Weather Statement190

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.

  1. June 18, 2009821alerts
  2. June 16, 2009712alerts
  3. February 11, 2009680alerts
  4. June 26, 2009668alerts
  5. June 11, 2009658alerts
  6. March 28, 2009644alerts
  7. May 15, 2009628alerts
  8. June 9, 2009625alerts
  9. June 15, 2009597alerts
  10. April 10, 2009588alerts
  11. May 6, 2009587alerts
  12. June 2, 2009578alerts
  13. April 2, 2009576alerts
  14. May 16, 2009575alerts
  15. June 3, 2009570alerts

Nearby

Alerts in force nowThe tornado archiveThe radar archive20082010

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.