Flash Flood Watch in effect through Thursday night

Slow moving thunderstorms will be possible on Tuesday and Wednesday in and around the Coachella Valley. Heavy rain will result in runoff that could quickly flood washes, canyons, and dry river beds.

If you see moving water, find another way around.

A flash flood watch is in effect for the Coachella Valley and mountains in Riverside, San Bernardino, and San Diego counties. The watch goes into effect at noon on Tuesday and expires at 8 pm Thursday.

The full text warning has been copied below.

Flash Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE SAN DIEGO CA

…FLASH FLOOD WATCH FOR THE MOUNTAINS AND LOW DESERTS TUESDAY
AFTERNOON THROUGH WEDNESDAY EVENING…

.SUBTROPICAL MOISTURE OVER THE REGION…DIURNAL HEATING AND WEAK
LOWER-LEVEL WINDS WILL CREATE THE POSSIBILITY OF FLASH FLOODING
NEAR THUNDERSTORMS OVER THE MOUNTAINS AND DESERTS EACH AFTERNOON
AND EVENING TUESDAY AND WEDNESDAY. CONDITIONS ARE EXPECTED TO BE
LESS CONDUCIVE FOR FLASH FLOODING ON THURSDAY.

SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS-
SAN DIEGO COUNTY MOUNTAINS-COACHELLA VALLEY-
SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR BANNING-
922 PM PDT MON SEP 7 2015

…FLASH FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY EVENING…

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF CALIFORNIA AND SOUTHWEST
CALIFORNIA…INCLUDING THE FOLLOWING AREAS…IN CALIFORNIA…
SAN GORGONIO PASS NEAR BANNING. IN SOUTHWEST CALIFORNIA…
COACHELLA VALLEY…RIVERSIDE COUNTY MOUNTAINS…SAN BERNARDINO
COUNTY MOUNTAINS…SAN DIEGO COUNTY DESERTS AND SAN DIEGO
COUNTY MOUNTAINS.

* FROM TUESDAY AFTERNOON THROUGH WEDNESDAY EVENING

* ISOLATED TO SCATTERED HEAVY SHOWERS AND THUNDERSTORMS WILL
CREATE THE FLASH FLOOD THREAT.

* AREAS IN AND BELOW RECENTLY FIRE SCARRED BURN AREAS WILL BE
PARTICULARLY SUSCEPTIBLE TO HEAVY RUNOFF AND DEBRIS FLOWS IF
STRONG THUNDERSTORMS DEVELOP NEARBY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.