A CHANCE OF SHOWERS AND THUNDERSTORMS ACROSS SOUTHWESTERN CALIFORNIA MONDAY THROUGH TUESDAY... THE CENTER OF WHAT WAS TROPICAL STORM IVO WAS LOCATED ABOUT 350 MILES WEST NORTHWEST OF CABO SAN LUCAS EARLY THIS MORNING. MOISTURE STREAMING NORTHWARD FROM THIS SYSTEM WILL LIKELY PRODUCE SHOWERS AND THUNDERSTORMS ACROSS SOUTHEASTERN CALIFORNIA TODAY AND AT THIS POINT... IT APPEARS THAT ANY SHOWER ACTIVITY TODAY WILL REMAIN SOUTH AND EAST OF THE FORECAST AREA. ON MONDAY... MID AND UPPER LEVEL FLOW WILL TURN SOUTHEASTERLY... AND MID LEVEL MOISTURE WILL INCREASE ACROSS THE REGION... ESPECIALLY ACROSS LOS ANGELES COUNTY. THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MOUNTAINS OF LOS ANGELES COUNTY AND THE ANTELOPE VALLEY MONDAY AND MONDAY EVENING. WITH THE ATMOSPHERE BECOMING INCREASINGLY MOIST AND UNSTABLE... ANY THUNDERSTORMS THAT DEVELOP ON MONDAY MAY PRODUCE HEAVY RAIN. SINCE THE STEERING FLOW AT MID AND HIGH LEVELS OF THE ATMOSPHERE WILL BE RATHER WEAK... STORMS WILL LIKELY BE SLOW MOVING AND COULD PRODUCE COPIOUS AMOUNTS OF RAINFALL IN ANY ONE AREA. FLASH FLOOD WATCHES MAY HAVE TO BE ISSUED FOR THE MOUNTAINS OF LOS ANGELES COUNTY AND THE ANTELOPE VALLEY FOR MONDAY AND MONDAY NIGHT. IT NOW APPEARS THAT ABUNDANT SUBTROPICAL MOISTURE WILL OVERSPREAD MUCH OF THE FORECAST AREA MONDAY NIGHT AND TUESDAY MORNING. THIS WILL BRING AT LEAST A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS TO ALL OF LOS ANGELES AND VENTURA COUNTIES... EVEN COASTAL AND VALLEY AREAS... FOR LATE MONDAY NIGHT INTO TUESDAY. THERE IS STILL SOME UNCERTAINTY AS TO HOW MUCH RAINFALL THIS SYSTEM WILL BRING TO THE FORECAST AREA... BUT THE POTENTIAL EXISTS FOR HEAVY RAINFALL IN SOME AREAS.
Posted on: Sun, 25 Aug 2013 20:31:43 +0000
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