Alert archive / Areal Flood Advisories / 2009
Areal Flood Advisories in the United States, August 2009
1,194 areal flood advisories in August 2009. Each alert counts once, however many counties it covered. The archive of areal flood advisories reaches back to 2005.
Areal Flood Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Areal Flood Advisories
- 1,194
- Busiest day
- August 12, 200987 areal flood advisories
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas1,032
- New Mexico559
- Florida537
- Puerto Rico401
- Kentucky370
- New York340
- North Carolina323
- Alabama284
- Tennessee284
- Pennsylvania241
- Georgia235
- South Carolina223
- Missouri210
- Arizona205
- Oklahoma179
- Illinois178
- Colorado172
- Ohio147
- Louisiana142
- Indiana140
- Mississippi133
- Virginia129
- Kansas122
- New Jersey117
- Arkansas113
- Massachusetts110
- Connecticut105
- Hawaii105
- California96
- Nebraska70
- North Dakota68
- Maine62
- New Hampshire60
- South Dakota58
- Alaska55
- Washington54
- Idaho49
- Wisconsin49
- Iowa48
- Utah41
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. Warning verification from the Mesonet's Cow. Rebuilt daily.