Issued by The National Weather Service
San Diego, CA
1:49 pm PST, Sat., Jan. 16, 2010
... BIG CHANGES IN THE WEATHER NEXT WEEK...
A SERIES OF STORMS WILL BRING PERIODS OF LOCALLY HEAVY RAIN AND STRONG WINDS NEXT WEEK WITH SNOW AT THE HIGHER ELEVATIONS.
THE FIRST STORM WILL ARRIVE MONDAY AND BRING RAIN... POSSIBLY HEAVY BY MONDAY EVENING. THE SNOW LEVEL WILL BE HIGH MONDAY... AROUND 7000 FEET... SO SNOW WILL BE RESTRICTED TO RESORT LEVELS. STRONG GUSTY WINDS WILL OCCUR LATE MONDAY INTO MONDAY NIGHT. SUBSEQUENT STORMS WILL IMPACT THE AREA TUESDAY THROUGH FRIDAY AND BRING MORE RAIN... HEAVY AT TIMES.
THIS ALL WEEK LONG EVENT HAS THE POTENTIAL TO GENERATE RAINFALL OF 5 TO 8 INCHES NEAR THE COAST... AND 15 TO LOCALLY 25 INCHES ON THE COASTAL MOUNTAIN SLOPES. EVEN THE DESERT LOCATIONS ARE LIKELY TO RECEIVE BETWEEN 2 AND 4 INCHES OF RAIN.
SNOW LEVELS WILL MOSTLY FLUCTUATE BETWEEN 5500 AND 7000 FEET WHICH WOULD CONFINE HEAVY SNOW ACCUMULATIONS TO THE HIGHER ELEVATIONS IN THE SAN BERNARDINO AND SAN JACINTO MOUNTAINS. AROUND 4 FEET OF SNOWFALL IS POSSIBLE AT THE HEAVIEST LOCATIONS.
WITH THE RAINFALL AMOUNTS EXPECTED... THERE IS HIGH LIKELIHOOD OF FLASH FLOODING... ALONG WITH MUD AND DEBRIS FLOWS... ESPECIALLY IN AND BELOW RECENTLY BURNED AREAS. THERE COULD ALSO BE ROCK SLIDES ALONG MOUNTAIN HIGHWAYS... MAKING TRAVEL IMPASSABLE AT TIMES. THE THREAT OF FLOODING WILL BE HIGHEST DURING THE SECOND HALF OF THE WEEK AS THE SOIL BECOMES MORE SATURATED.
WITH THE HEAVY SNOW FALL AMOUNTS EXCEPTED... THERE IS A POSSIBILITY OF AVALANCHES FOR AREAS LOCATED BELOW THE STEEPER SLOPES OF THE HIGHER SAN BERNARDINO AND SAN JACINTO MOUNTAINS.
THE STRENGTH OF THE JET STREAM DRIVING THESE STORMS IS OVER 200 MPH AND THE STORMS THEMSELVES WILL BE MOVING RAPIDLY ONSHORE IN QUICK SUCCESSION.
AS A RESULT THERE ARE LIKELY TO BE STRONG WINDS THROUGH MUCH OF NEXT WEEK. OVER THE COASTAL WATERS GALE FORCE OR HIGHER WINDS ARE EXPECTED. OVER LAND... DAMAGING WINDS ARE LIKELY TO PRECEDE THE ARRIVAL OF EACH STORM. WIND GUSTS BETWEEN 40 AND 60 MPH ARE POSSIBLE FOR THE COASTS AND VALLEYS... WHILE THE MOUNTAINS AND DESERTS MAY HAVE GUSTS 60 MPH OR HIGHER.
PEOPLE SHOULD STAY UPDATED WITH THE LATEST FORECASTS.
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