024
FGUS76 KSGX 042240
ESFSGX
HYDROLOGIC FORECAST FOR EXTREME SOUTHWESTERN CALIFORNIA
NATIONAL WEATHER SERVICE SAN DIEGO CA
340 PM PDT FRI SEP 4 2026
..FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA
SYNOPSIS
DRY WEATHER WILL CONTINUE TODAY WITH NO THUNDERSTORMS OR FLASH
FLOODING EXPECTED. WHILE HURRICANE MARIE IS EXPECTED TO REMAIN
WELL TO THE SOUTHWEST OF THE AREA, MID AND HIGH LEVEL MOISTURE
FROM MARIE WILL INCREASE DURING THE WEEKEND WITH CHANCES FOR
SHOWERS INCREASING SATURDAY NIGHT INTO SUNDAY, THEN DECREASING FOR
SUNDAY NIGHT INTO LABOR DAY. CHANCES FOR ONE INCH OR MORE OF
RAINFALL ON SUNDAY ARE GREATEST FOR THE MOUNTAINS, AROUND 10-15
PERCENT. RAINFALL TOTALS OUTSIDE OF THE MOUNTAINS WILL GENERALLY
BE LESS THAN 0.25".
CAZ043-048-050-055>058-060>062-065-552-554-051345-
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
340 PM PDT FRI SEP 4 2026
TONIGHT...NONE
NO FLASH FLOODING IS EXPECTED.
SATURDAY...NONE
NO FLASH FLOODING IS EXPECTED.
SUNDAY...LOW
THE RISK OF FLASH FLOODING IS MINIMAL.
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