Alert archive / Areal Flood Advisories / 2021
Areal Flood Advisories in the United States, April 2021
222 areal flood advisories in April 2021. 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
- 222
- Busiest day
- April 28, 202145 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.
- Texas1,812
- New Mexico1,076
- Florida637
- Kentucky475
- Arizona474
- Tennessee444
- Alabama422
- Puerto Rico410
- New York407
- Oklahoma390
- North Carolina378
- Pennsylvania377
- Virginia333
- Colorado290
- Ohio243
- South Carolina242
- California242
- Mississippi236
- Missouri205
- Indiana200
- Louisiana193
- New Jersey184
- Hawaii183
- Illinois168
- Georgia162
- Kansas125
- Nebraska114
- Arkansas105
- Nevada94
- Michigan86
- Idaho85
- Utah70
- Wisconsin63
- Connecticut58
- West Virginia54
- Wyoming52
- Maine48
- Guam47
- Delaware44
- Maryland41
Nearby
Alerts in force nowThe tornado archiveThe radar archive20202022
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.