Alert archive / California / Flash Flood Watches

Flash Flood Watches in California, 2009

24 flash flood watches in 2009. 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 2009. Tap one for its archive.

Flash Flood Watches
24
Busiest month
February5 flash flood watches
Busiest day
October 12, 20094 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 23, 3:15 AM PSTFlash Flood WatchHNX36 hr
Feb 6, 10:12 AM PSTFlash Flood WatchLOXLos Angeles36 hr
Feb 6, 1:37 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego26 hr
Feb 14, 3:09 PM PSTFlash Flood WatchMTRMonterey42 hr
Feb 15, 1:31 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego28 hr
Feb 15, 3:17 PM PSTFlash Flood WatchLOXLos Angeles27 hr
Mar 1, 9:19 PM PSTFlash Flood WatchSTO49 hr
Mar 22, 4:36 AM PDTFlash Flood WatchHNX4 hr
May 31, 6:43 AM PDTFlash Flood WatchREVAlpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more12 hr
Jun 2, 11:14 AM PDTFlash Flood WatchMFRModoc, Siskiyou8 hr
Jun 2, 7:19 PM PDTFlash Flood WatchMFRModoc, Siskiyou22 hr
Jul 23, 1:27 PM PDTFlash Flood WatchSGXRiverside, San Bernardino, San Diego31 hr
Jul 24, 3:43 AM PDTFlash Flood WatchVEFSan Bernardino17 hr
Aug 21, 1:33 PM PDTFlash Flood WatchSGXRiverside, San Bernardino, San Diego30 hr
Oct 12, 1:34 AM PDTFlash Flood WatchHNX57 hr
Oct 12, 9:38 AM PDTFlash Flood WatchMTRMonterey, San Benito, San Mateo, Santa Clara, Santa Cruz38 hr
Oct 12, 1:58 PM PDTFlash Flood WatchLOXLos Angeles, Santa Barbara48 hr
Oct 12, 2:25 PM PDTFlash Flood WatchSTO56 hr
Oct 13, 4:24 AM PDTFlash Flood WatchSGXSan Bernardino34 hr
Dec 6, 2:33 PM PSTFlash Flood WatchLOXLos Angeles28 hr
Dec 6, 7:09 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego25 hr
Dec 11, 9:56 AM PSTFlash Flood WatchLOX4 hr
Dec 12, 4:32 AM PSTFlash Flood WatchLOXLos Angeles28 hr
Dec 12, 5:59 PM PSTFlash Flood WatchSGXOrange, Riverside, San Bernardino, San Diego15 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. October 12, 20094flash flood watches
  2. February 6, 20092flash flood watches
  3. February 15, 20092flash flood watches
  4. January 23, 20091flash flood watches
  5. February 14, 20091flash flood watches
  6. March 2, 20091flash flood watches
  7. March 22, 20091flash flood watches
  8. May 31, 20091flash flood watches
  9. June 2, 20091flash flood watches
  10. June 3, 20091flash flood watches
  11. July 23, 20091flash flood watches
  12. July 24, 20091flash flood watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20082010

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.