Coastal Flood Advisories in the United States
8,964 coastal flood advisories since 1986. Each alert counts once, however many counties it covered. The archive of coastal flood advisories reaches back to 2005.
Coastal Flood Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Coastal Flood Advisories
- 8,964
- Busiest year
- 2024819 coastal flood advisories
- Average year
- 427over 21 years on file
- Busiest day
- September 30, 202316 coastal 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.
- North Carolina1,985
- Maryland1,734
- South Carolina1,320
- Virginia946
- New Jersey876
- District of Columbia822
- Texas786
- New York519
- Delaware505
- Georgia475
- Florida426
- California391
- Connecticut341
- Washington308
- Louisiana295
- Maine283
- Pennsylvania248
- Massachusetts248
- New Hampshire200
- Mississippi148
- Oregon87
- Alabama74
- Puerto Rico69
- Alaska68
- Rhode Island64
- U.S. Virgin Islands36
- Northern Mariana Islands15
- Michigan7
- Guam6
- Minnesota1
- Wisconsin1
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.