688  
FGUS76 KSGX 282216  
ESFSGX  
 
HYDROLOGIC FORECAST FOR EXTREME SOUTHWESTERN CALIFORNIA  
NATIONAL WEATHER SERVICE SAN DIEGO CA  
316 PM PDT MON SEP 28 2026  
   
..FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA  
 
   
SYNOPSIS  
 
DRY WEATHER IS EXPECTED THROUGH THE NEXT SEVEN DAYS.  
 
 
 
CAZ058-062-291315-  
SAN DIEGO COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-  
INCLUDING THE CITIES OF JULIAN, PINE VALLEY, AND BORREGO SPRINGS  
316 PM PDT MON SEP 28 2026  
   
TONIGHT...NONE  
NO FLASH FLOODING IS EXPECTED.    
TUESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.    
WEDNESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.  
 
 
 
CAZ048-055-056-060-061-065-291315-  
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-  
SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS-  
APPLE AND LUCERNE VALLEYS-COACHELLA VALLEY-  
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, LUCERNE VALLEY, INDIO, PALM SPRINGS,  
CATHEDRAL CITY, PALM DESERT, PALM DESERT COUNTRY, LA QUINTA,  
AND COACHELLA  
316 PM PDT MON SEP 28 2026  
   
TONIGHT...NONE  
NO FLASH FLOODING IS EXPECTED.    
TUESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.    
WEDNESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.  
 
 
 
CAZ043-050-057-552-554-291315-  
SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO COUNTY VALLEYS-  
SANTA ANA MOUNTAINS AND FOOTHILLS-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, HUNTINGTON BEACH, COSTA MESA,  
NEWPORT BEACH, LAGUNA BEACH, SAN CLEMENTE, SANTA ANA, ANAHEIM,  
GARDEN GROVE, IRVINE, ORANGE, FULLERTON, AND MISSION VIEJO  
316 PM PDT MON SEP 28 2026  
   
TONIGHT...NONE  
NO FLASH FLOODING IS EXPECTED.    
TUESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.    
WEDNESDAY...NONE  
NO FLASH FLOODING IS EXPECTED.  
 
 
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