098
FGUS76 KSGX 280848
ESFSGX
HYDROLOGIC FORECAST FOR EXTREME SOUTHWESTERN CALIFORNIA
NATIONAL WEATHER SERVICE SAN DIEGO CA
148 AM PDT MON SEP 28 2026
..FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA
SYNOPSIS
SHOWERS FROM MID AND HIGH LEVEL TROPICAL MOISTURE ACROSS THE
SOUTHEASTERN THIRD OF SAN DIEGO COUNTY ARE EXPECTED TO END THIS
MORNING FOLLOWED BY DRY WEATHER.
CAZ058-062-290245-
SAN DIEGO COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-
INCLUDING THE CITIES OF JULIAN, PINE VALLEY, AND BORREGO SPRINGS
148 AM PDT MON SEP 28 2026
TODAY...LOW
THE RISK OF FLASH FLOODING IS MINIMAL.
TUESDAY...NONE
NO FLASH FLOODING IS EXPECTED.
CAZ048-055-056-060-061-065-290245-
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
148 AM PDT MON SEP 28 2026
TODAY...NONE
NO FLASH FLOODING IS EXPECTED.
TUESDAY...NONE
NO FLASH FLOODING IS EXPECTED.
CAZ043-050-057-552-554-290245-
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
148 AM PDT MON SEP 28 2026
TODAY...NONE
NO FLASH FLOODING IS EXPECTED.
TUESDAY...NONE
NO FLASH FLOODING IS EXPECTED.
17
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