Monsoonal moisture and moisture from the remnants of Tropical Storm Ivo will continue to increase today and spread slightly farther west into portions of the inland valleys.
LIGHT TO MODERATE SHOWERS ARE EXPECTED TO CONTINUE BEYOND 5 PM.
AT 330 PM AN AREA OF SHOWERS EXTENDED FROM NEAR CAMPO…NORTH TO
THE LUCERNE VALLEY AREA. THERE WERE ALSO MODERATE SHOWERS BETWEEN
ONTARIO AND WRIGHTWOOD. THE SHOWERS WERE MOVING NORTH AT ABOUT 20
MPH. RAINFALL AMOUNTS OF UP TO 0.05 INCHES PER HOUR CAN BE
EXPECTED FROM THE HEAVIEST SHOWERS.
MONSOONAL MOISTURE AND MOISTURE FROM THE REMNANTS OF TROPICAL
STORM IVO WILL CONTINUE TO INCREASE TODAY AND SPREAD SLIGHTLY
FARTHER WEST INTO PORTIONS OF THE INLAND VALLEYS. IT IS POSSIBLE
THAT CLOUD COVER COULD MAKE FOR A LITTLE LESS THUNDERSTORM
ACTIVITY THIS AFTERNOON…BUT IF THUNDERSTORMS DO FORM…HEAVY
RAINFALL AND FLASH FLOODING ARE LIKELY…ESPECIALLY IN THE
MOUNTAINS AND DESERTS WITH ISOLATED FLASH FLOODING IN THE INLAND
VALLEYS. THERE SHOULD BE BETTER SURFACE HEATING TOMORROW…AND SO
ANOTHER ROUND OF WIDESPREAD THUNDERSTORMS AND HEAVY SHOWERS IS
LIKELY TUESDAY AFTERNOON THROUGH EARLY EVENING IN THE MOUNTAINS
AND DESERTS…SO THE FLASH FLOOD WATCH WAS EXTENDED THROUGH
TUESDAY EVENING FOR THOSE AREAS. HEAVY RAINFALL IN BURN AREAS OF
THE PAST 2 YEARS WILL LIKELY LEAD TO MUD AND DEBRIS FLOWS NEAR
AND BELOW THOSE BURN AREAS. ISOLATED THUNDERSTORMS WITH LOCALLY
HEAVY RAINFALL ARE ALSO POSSIBLE THROUGH LATE TONIGHT THROUGH
EARLY TUESDAY MORNING DUE TO AN UPPER DISTURBANCE MOVING THROUGH.