Areal Flood Advisories in the United States
165,578 areal flood advisories since 1986. 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
- 165,578
- Busiest year
- 201811,044 areal flood advisories
- Average year
- 8,279over 20 years on file
- Busiest day
- August 22, 2022182 areal flood advisories
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas22,173
- New Mexico13,000
- Florida12,180
- Puerto Rico8,242
- North Carolina7,966
- Kentucky7,741
- Arizona7,237
- Oklahoma5,587
- California5,520
- New York5,115
- Tennessee5,032
- South Carolina5,028
- Pennsylvania4,925
- Alabama4,626
- Ohio4,365
- Colorado4,257
- Georgia4,204
- Virginia4,032
- Indiana3,807
- Missouri3,532
- Hawaii2,930
- Illinois2,888
- New Jersey2,692
- Louisiana2,666
- Nebraska2,317
- Kansas1,933
- Mississippi1,867
- Nevada1,820
- Connecticut1,501
- Arkansas1,461
- Wisconsin1,430
- Michigan1,294
- Montana1,250
- Maine1,209
- Massachusetts1,039
- Alaska928
- Utah927
- Washington922
- Wyoming821
- Idaho816
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.