Alert archive / California / Flash Flood Watches

Flash Flood Watches in California, 2010

26 flash flood watches in 2010. 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 2010. Tap one for its archive.

Flash Flood Watches
26
Busiest month
January7 flash flood watches
Busiest day
July 16, 20103 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 17, 1:20 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego30 hr
Jan 17, 1:58 PM PSTFlash Flood WatchLOXLos Angeles5 days
Jan 19, 3:42 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego14 hr
Jan 20, 3:19 AM PSTFlash Flood WatchPSR40 hr
Jan 20, 4:26 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego16 hr
Jan 21, 4:12 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego38 hr
Jan 21, 1:25 PM PSTFlash Flood WatchVEFSan Bernardino8 hr
Feb 4, 1:22 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego54 hr
Feb 4, 3:47 PM PSTFlash Flood WatchLOXLos Angeles49 hr
Feb 8, 7:23 PM PSTFlash Flood WatchLOXLos Angeles30 hr
Feb 9, 4:00 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego22 hr
Feb 26, 3:32 AM PSTFlash Flood WatchLOXLos Angeles39 hr
Mar 7, 7:44 AM PSTFlash Flood WatchPSR8 hr
Apr 11, 4:06 PM PDTFlash Flood WatchLOXLos Angeles12 hr
Jul 15, 6:07 PM PDTFlash Flood WatchLOX6 hr
Jul 16, 6:28 AM PDTFlash Flood WatchREVAlpine, El Dorado, Mono, Nevada, Placer14 hr
Jul 16, 9:21 AM PDTFlash Flood WatchLOX8 hr
Aug 8, 8:15 AM PDTFlash Flood WatchREVAlpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more13 hr
Oct 2, 4:24 AM PDTFlash Flood WatchLOXSanta Barbara17 hr
Nov 19, 2:30 PM PSTFlash Flood WatchLOXLos Angeles24 hr
Dec 17, 8:22 PM PSTFlash Flood WatchLOXLos Angeles, Santa Barbara5 days
Dec 20, 4:31 AM PSTFlash Flood WatchVEFInyo, San Bernardino66 hr
Dec 20, 4:52 AM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego61 hr
Dec 21, 8:51 AM PSTFlash Flood WatchPSR35 hr
Dec 21, 11:25 PM PSTFlash Flood WatchHNX19 hr
Dec 28, 4:08 AM PSTFlash Flood WatchMTRMarin, Napa, Sonoma20 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. July 16, 20103flash flood watches
  2. January 17, 20102flash flood watches
  3. January 20, 20102flash flood watches
  4. January 21, 20102flash flood watches
  5. February 4, 20102flash flood watches
  6. February 9, 20102flash flood watches
  7. December 20, 20102flash flood watches
  8. January 19, 20101flash flood watches
  9. February 26, 20101flash flood watches
  10. March 7, 20101flash flood watches
  11. April 11, 20101flash flood watches
  12. August 8, 20101flash flood watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20092011

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.