Alert archive / California / Flash Flood Watches

Flash Flood Watches in California, 2023

15 flash flood watches in 2023. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood watches reaches back to 2005.

Flash Flood Watches by county

Each county as a circle sized by its count in 2023. Tap one for its archive.

Flash Flood Watches
15
Busiest month
January4 flash flood watches
Busiest day
January 3, 20232 flash flood watches

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Jan 1, 12:42 PM PSTFlash Flood WatchSTO21 hr
Jan 3, 12:35 PM PSTFlash Flood WatchSTO42 hr
Jan 3, 1:06 PM PSTFlash Flood WatchEKAHumboldt, Lake, Mendocino45 hr
Jan 7, 8:37 AM PSTFlash Flood WatchEKALake, Mendocino, Trinity22 hr
May 29, 9:50 AM PDTFlash Flood WatchMFRSiskiyou13 hr
Aug 21, 10:02 AM PDTFlash Flood WatchMFRSiskiyou6 hr
Aug 21, 11:06 AM PDTFlash Flood WatchSTO9 hr
Aug 30, 10:51 AM PDTFlash Flood WatchEKADel Norte, Humboldt59 hr
Aug 30, 2:40 PM PDTFlash Flood WatchMFRSiskiyou3 days
Sep 1, 2:49 AM PDTFlash Flood WatchSTO16 hr
Nov 1, 12:47 PM PDTFlash Flood WatchEKADel Norte3 days
Nov 5, 8:44 AM PSTFlash Flood WatchEKADel Norte25 hr
Nov 18, 3:00 AM PSTFlash Flood WatchEKADel Norte15 hr
Dec 2, 9:30 AM PSTFlash Flood WatchEKADel Norte16 hr
Dec 6, 3:27 AM PSTFlash Flood WatchEKADel Norte11 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. January 3, 20232flash flood watches
  2. August 21, 20232flash flood watches
  3. August 30, 20232flash flood watches
  4. January 1, 20231flash flood watches
  5. January 7, 20231flash flood watches
  6. May 29, 20231flash flood watches
  7. September 1, 20231flash flood watches
  8. November 1, 20231flash flood watches
  9. November 5, 20231flash flood watches
  10. November 18, 20231flash flood watches
  11. December 2, 20231flash flood watches
  12. December 6, 20231flash flood watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20222024

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.