Flash Flood Watch issued March 22 at 4:51AM PDT until March 23 at 5:00AM PDT by NWS Oxnard
Los Angeles County Coast including Downtown Los Angeles; Los Angeles County Mountains excluding the Santa Monica Range; Los Angeles County San Fernando Valley; Los Angeles County San Gabriel Valley; Santa Clarita Valley; Santa Monica Mountains Recreational Area
...FLASH FLOOD WATCH FOR ALL OF SAN LUIS OBISPO AND SANTA BARBARA
COUNTIES (EXCEPT THE CUYAMA VALLEY) AND RECENT BURN AREAS ACROSS
.A large and powerful storm system will continue to bring periods
of moderate to heavy rain along with a slight chance of
thunderstorms to Southwest California through late tonight or
early Friday. The most widespread moderate to heavy rain will be
focused along and ahead of a cold front that will push through the
region today. Flash flooding and mud and debris flows are
possible in and around recent burn areas in the watch area. In
addition, the Flash Flood Watch includes all of San Luis Obispo
and Santa Barbara Counties except the Cuyama valley, where the
heaviest rainfall intensities are expected through this morning,
with rates potentially exceeding 1 inch per hour near thunderstorms.
Storm total rainfall since Tuesday evening is expected to range
from 2 to 5 inches across coastal and valley areas, with 4 to 8
inches across the foothills and coastal slopes.
...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...
The Flash Flood Watch continues for
* The recent burn areas of Los Angeles County.
* Through late tonight
* Rainfall rates between 0.33 and 0.66 inches per hour will be
likely between 10 am and 8 pm today, with local rates up to one
inch per hour possible near thunderstorms.
* 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