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FGUS76 KSGX 150927

ESFSGX



Hydrologic Forecast for Extreme Southwestern California

National Weather Service San Diego CA

227 AM PDT Tue Jul 15 2025



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



.SYNOPSIS...

Dry weather will continue through Wednesday. A weak upper level

low pressure system from the south will bring an increase in

monsoonal moisture on Thursday and Friday with a chance for

afternoon showers and thunderstorms, mainly for the mountains and

high desert. Chances will slowly decrease for next weekend as the

monsoonal moisture begins to decrease.



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CAZ043-048-050-055>058-060>062-065-552-554-160200-

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-

San Diego County Mountains-Apple and Lucerne Valleys-

Coachella Valley-San Diego County Deserts-

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, Julian, 

Pine Valley, Victorville, Hesperia, Apple Valley, Lucerne 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

227 AM PDT Tue Jul 15 2025



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

.WEDNESDAY...None...no flash flooding is expected. 



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