070
FGUS76 KSGX 090947
ESFSGX

Hydrologic Forecast for Extreme Southwestern California
National Weather Service San Diego CA
247 AM PDT Sat Aug 9 2025

...Flash Flood Potential Index for Extreme Southwestern California...

.SYNOPSIS...
There is a 10-15% chance for thunderstorms over the San Diego
County mountains and adjacent desert slopes and a 10% chance over
the Santa Rosa Mountains each afternoon today and Sunday, but the
probability of flash flooding is low. Otherwise, dry weather will
continue into next week.

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CAZ043-048-050-055>057-060-061-065-552-554-100130-
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-San Bernardino County Mountains-
Riverside County Mountains-Santa Ana Mountains and Foothills-
Apple and Lucerne Valleys-Coachella Valley-
San Gorgonio Pass near Banning-Orange County Coastal Areas-
Orange County Inland Areas-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas,
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona,
Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway,
Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake,
Running Springs, Wrightwood, Idyllwild-Pine Cove, Victorville,
Hesperia, Apple Valley, Lucerne Valley, Indio, Palm Springs,
Cathedral City, Palm Desert, Palm Desert Country, La Quinta,
Coachella, Huntington Beach, Costa Mesa, Newport Beach,
Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove,
Irvine, Orange, Fullerton, and Mission Viejo
247 AM PDT Sat Aug 9 2025

.TODAY...None...no flash flooding is expected.
.SUNDAY...None...no flash flooding is expected.

$$

CAZ058-062-100130-
San Diego County Mountains-San Diego County Deserts-
Including the cities of Julian, Pine Valley, and Borrego Springs
247 AM PDT Sat Aug 9 2025

.TODAY...Low...the risk of flash flooding is minimal.
.SUNDAY...Low...the risk of flash flooding is minimal.

$$