Alert archive / Flash Flood Warnings
Flash Flood Warnings in the United States, 2001
2,415 flash flood warnings in 2001. Each alert counts once, however many counties it covered. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by state
Each state shaded by its count. Tap a state for its own archive.
- Flash Flood Warnings
- 2,415
- Busiest month
- June537 flash flood warnings
- Busiest day
- August 31, 200161 flash flood warnings
Over time
By month
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas422
- Mississippi131
- Missouri131
- West Virginia109
- Arkansas109
- Virginia101
- Pennsylvania94
- Kansas90
- Kentucky88
- Arizona77
- Tennessee74
- Ohio70
- Montana70
- Louisiana69
- North Carolina64
- Alabama61
- Illinois61
- Oklahoma53
- Puerto Rico53
- California51
- Utah44
- New York43
- Colorado42
- Minnesota40
- Maryland33
- Indiana32
- Iowa30
- North Dakota29
- Michigan29
- New Jersey28
- Nebraska23
- South Carolina21
- South Dakota21
- Nevada21
- Hawaii20
- Georgia16
- New Mexico12
- Connecticut12
- Delaware11
- Wyoming9
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20002002
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.