Alert archive / Coastal Flood Advisories
Coastal Flood Advisories in the United States, 2020
717 coastal flood advisories in 2020. 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
- 717
- Busiest month
- September122 coastal flood advisories
- Busiest day
- September 18, 202014 coastal flood advisories
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.
- North Carolina179
- Texas109
- Maryland107
- South Carolina88
- District of Columbia72
- Virginia55
- New Jersey47
- Florida42
- New York29
- Louisiana29
- Georgia28
- Delaware27
- Maine20
- Connecticut20
- Washington19
- Mississippi16
- Massachusetts15
- New Hampshire15
- Pennsylvania14
- Alabama11
- California10
- Puerto Rico10
- Oregon9
- Alaska6
- Rhode Island4
- U.S. Virgin Islands3
- Michigan2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20192021
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.