SEVERE WEATHER

  • San Diego
    Riverside
  • Flash Flood Watch

    San Diego, CA

    SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS-
    SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
    COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-
    955 AM PDT WED SEP 17 2014

    ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM PDT THIS
    EVENING...

    THE FLASH FLOOD WATCH CONTINUES FOR

    * A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING
    AREAS...APPLE AND LUCERNE VALLEYS...COACHELLA VALLEY...
    RIVERSIDE COUNTY MOUNTAINS...SAN BERNARDINO COUNTY MOUNTAINS...SAN
    DIEGO COUNTY DESERTS AND SAN DIEGO COUNTY MOUNTAINS.

    * UNTIL 8 PM PDT THIS EVENING

    * THUNDERSTORMS ARE EXPECTED TO DEVELOP BY LATE MORNING AND
    CONTINUE THROUGH THE AFTERNOON. THUNDERSTORMS WILL BE
    RELATIVELY STATIONARY...ADDING TO THE THREAT OF HEAVY RAINFALL
    OVER ONE LOCATION IN A SHORT PERIOD OF TIME.

    * THE RISK OF FLASH FLOODING WILL BE GREATEST IN STEEP CANYONS...
    DOWNSTREAM FROM THE MOUNTAIN SLOPES...AND RECENTLY BURNED AREAS
    WHERE RUNOFF AND DEBRIS CAN QUICKLY FILL DRY WASHES.

    PRECAUTIONARY/PREPAREDNESS ACTIONS...

    A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
    TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

    YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
    SHOULD FLASH FLOOD WARNINGS BE ISSUED.



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Whitney Southwick's Forecast for September 17, 2014
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