552
FGUS76 KSGX 170347
ESFSGX

Hydrologic Forecast for Extreme Southwestern California
National Weather Service San Diego CA
847 PM PDT Wed Jul 16 2025

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

.SYNOPSIS...
For Thursday and Friday, there will be an increase in monsoon
moisture with a chance for mainly afternoon showers and
thunderstorms, with the highest chances over the mountains. Each
day, chances for one- quarter inch or more of rainfall are 5 to 10
percent with the chance for one-half inch or more of rainfall
less than 5 percent. Then drier for the weekend into next week.
There is a 5-10 percent chance of showers west of the mountains
Thursday morning through Friday morning, little to no rain
accumulation is expected.

$$

CAZ055-056-058-171330-
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, Big Bear City,
Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove,
Julian, and Pine Valley
847 PM PDT Wed Jul 16 2025

.TONIGHT...None...no flash flooding is expected.
.THURSDAY...Low...the risk of flash flooding is minimal.
.FRIDAY...Low...the risk of flash flooding is minimal.

$$

CAZ060>062-065-171330-
Apple and Lucerne Valleys-Coachella Valley-
San Diego County Deserts-San Gorgonio Pass near Banning-
Including the cities of Victorville, Hesperia, Apple Valley,
Lucerne Valley, Indio, Palm Springs, Cathedral City, Palm Desert,
Palm Desert Country, La Quinta, Coachella, and Borrego Springs
847 PM PDT Wed Jul 16 2025

.TONIGHT...None...no flash flooding is expected.
.THURSDAY...None...no flash flooding is expected.
.FRIDAY...Low...the risk of flash flooding is minimal.

$$

CAZ048-050-171330-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Riverside, San Bernardino, Ontario,
Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido,
El Cajon, San Marcos, La Mesa, Santee, and Poway
847 PM PDT Wed Jul 16 2025

.TONIGHT...None...no flash flooding is expected.
.THURSDAY...None...no flash flooding is expected.
.FRIDAY...Low...the risk of flash flooding is minimal.

$$

CAZ043-552-554-171330-
San Diego County Coastal Areas-Orange County Coastal Areas-
Orange County Inland Areas-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas,
Chula Vista, National City, San Diego, Huntington Beach,
Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana,
Anaheim, Garden Grove, Irvine, Orange, Fullerton,
and Mission Viejo
847 PM PDT Wed Jul 16 2025

.TONIGHT...None...no flash flooding is expected.
.THURSDAY...None...no flash flooding is expected.
.FRIDAY...None...no flash flooding is expected.

$$