492
FGUS76 KSGX 192158
ESFSGX

Hydrologic Forecast for Extreme Southwestern California
National Weather Service San Diego CA
258 PM PDT Thu Sep 19 2024

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

.SYNOPSIS...
An unseasonably deep trough of low pressure will bring mostly
light rain from the coast to the mountains late tonight into
Friday afternoon. Light, scattered showers are expected Friday
morning mostly west of the mountains. By Friday afternoon,
chances of thunderstorms enter the forecast for the Inland Empire,
San Bernardino mountains, and the High Desert. Rain rates are
expected to be 0.25 to 0.50 inches per hour in thunderstorms. Most
coastal and valley locations should receive 0.10 inch of rain or
less, higher amounts possible where thunderstorms develop in the
Inland Empire. Rainfall totals for the mountains will be variable.
0.10-0.30 inches are expected with higher amounts where
thunderstorms develop. Dry conditions are expected for the
weekend.

$$

CAZ048-055-056-060-065-201315-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Apple and Lucerne Valleys-San Gorgonio Pass Near Banning-
Including the cities of Riverside, San Bernardino, Ontario,
Moreno Valley, Fontana, Rancho Cucamonga, Corona, Crestline,
Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs,
Wrightwood, Idyllwild-Pine Cove, Victorville, Hesperia,
Apple Valley, and Lucerne Valley
258 PM PDT Thu Sep 19 2024

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

$$

CAZ043-050-057-058-061-062-552-554-201315-
San Diego County Coastal Areas-San Diego County Valleys-
Santa Ana Mountains and Foothills-San Diego County Mountains-
Coachella Valley-San Diego County Deserts-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas,
Chula Vista, National City, San Diego, Escondido, El Cajon,
San Marcos, La Mesa, Santee, Poway, Julian, Pine Valley, Indio,
Palm Springs, Cathedral City, Palm Desert, Palm Desert Country,
La Quinta, Coachella, Borrego Springs, Huntington Beach,
Costa Mesa, Newport Beach, Laguna Beach, San Clemente, Santa Ana,
Anaheim, Garden Grove, Irvine, Orange, Fullerton,
and Mission Viejo
258 PM PDT Thu Sep 19 2024

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

$$