Flash Flood Watch issued March 20 at 4:56PM PDT until March 22 at 5:00PM PDT by NWS Oxnard
San Luis Obispo County Central Coast; San Luis Obispo County Mountains; Santa Barbara County Mountains; Santa Barbara County South Coast; Santa Ynez Valley; Ventura County Coast; Ventura County Interior Valleys; Ventura County Mountains
...FLASH FLOOD WATCH FOR RECENT BURN AREAS ACROSS SOUTHWESTERN
.A large and powerful storm system across the Eastern Pacific is
expected to approach the West Coast through Friday. A subtropical
fetch of moisture well ahead of the system is expected to bring
periods of moderate to heavy rain to portions of Southwest
California through late Thursday or early Friday. The most
widespread moderate to heavy rain currently looks to be focused
along and ahead of a cold front pushing through the region
Wednesday night into Thursday. Flash flooding and mud and debris
flows are likely in and around recent burn areas in the watch
area. There is the potential that the Flash Flood Watch will need
to be expanded to include areas outside of recent burn areas
during the peak of the storm system Wednesday night into Thursday.
Rain will likely come to an end behind the cold front sometime
late Thursday into early Friday. Storm total rainfall is expected
to range from 2 to 5 inches across coastal and valley areas, with
5 to locally 10 inches across the foothills and coastal slopes.
...FLASH FLOOD WATCH FOR RECENT BURN AREAS REMAINS IN EFFECT
THROUGH THURSDAY AFTERNOON...
The Flash Flood Watch continues for
* The recent burn areas of San Luis Obispo, Santa Barbara and
* Through Thursday afternoon
* Rainfall rates up to 0.6 inches per hour are possible through
Wednesday morning with rates likely increasing to 0.75 inches
per hour or higher at times Wednesday afternoon through Thursday
* Rainfall of this intensity can produce dangerous mud and
debris flows near recent burn areas.
Flash flooding and debris flows will be a particular threat in
and below the recently burned areas.
A flash flood watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.
Southern California residents, in or below the recently burned
areas are urged to take the steps necessary to protect their
property. Persons in the watch area should remain alert and
follow directions of emergency preparedness officials.