QUANTITATIVE PRECIPITATION STATEMENT

 
 FSUS46 KSGX 092323
 QPSSGX
 
 QUANTITATIVE PRECIPITATION FORECAST
 NATIONAL WEATHER SERVICE SAN DIEGO CA
 400 PM PST TUE FEB 9 2010
 
 PRECIPITATION FORECAST IN INCHES IN 6-HOUR PERIODS...
    [ BEGINNING TIMES FOR EACH PERIOD IN LOCAL TIME...                    ]
    [ FOR EXAMPLE...04THU                                                 ]
    [            ...10THU IS A FORECAST FOR  4 AM TO 10 AM THURSDAY       ]
    [ FOR EXAMPLE...22THU                                                 ]
    [            ...04FRI IS A FORECAST FOR  10 PM THURSDAY TO 4 AM FRIDAY]
 
 
 ...ORANGE COUNTY COASTAL AREAS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    HUNTINGTON BEACH
    0.32  0.12  0.01  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    NEWPORT BEACH
    0.34  0.13  0.01  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    LAGUNA BEACH
    0.36  0.15  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    SAN CLEMENTE
    0.30  0.17  0.03  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    ANAHEIM
    0.33  0.13  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    FULLERTON
    0.31  0.13  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    BREA
    0.31  0.13  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    VILLA PARK
    0.37  0.11  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SANTA ANA MOUNTAINS AND FOOTHILLS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    CARBON CANYON/GILMAN PEAK, FREEWAY COMPLEX BURN AREA
    0.40  0.14  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    FREMONT CANYON
    0.36  0.11  0.03  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    SILVERADO CANYON, 3 MI EAST OF SILVERADO
    0.44  0.14  0.05  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    MODJESKA PRESERVE
    0.40  0.13  0.04  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    SANTIAGO PEAK
    0.50  0.18  0.06  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    SANTA ROSA PLATEAU
    0.27  0.26  0.06  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    ONTARIO
    0.38  0.14  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    SAN BERNARDINO
    0.34  0.19  0.05  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    BEAUMONT
    0.35  0.43  0.09  0.03  0.00  0.00  0.00  0.00  0.00  0.00  
    RIVERSIDE
    0.25  0.12  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    PERRIS VALLEY CHANNEL
    0.26  0.22  0.05  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    PRADO DAM
    0.29  0.11  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    TEMECULA
    0.26  0.31  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    HEMET
    0.24  0.33  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...RIVERSIDE COUNTY MOUNTAINS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    IDYLLWILD
    0.62  1.02  0.22  0.09  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...COACHELLA VALLEY...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    PALM SPRINGS
    0.11  0.21  0.05  0.06  0.00  0.00  0.00  0.00  0.00  0.00  
    THERMAL
    0.07  0.16  0.05  0.08  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN BERNARDINO COUNTY MOUNTAINS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    SAN ANTONIO DAM
    1.04  0.24  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    LYTLE CREEK
    0.91  0.25  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    WRIGHTWOOD
    0.75  0.20  0.06  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    LAKE ARROWHEAD
    0.83  0.63  0.14  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    BIG BEAR LAKE
    0.41  0.56  0.13  0.03  0.00  0.00  0.00  0.00  0.00  0.00  
    BIG MORONGO CANYON
    0.29  0.44  0.12  0.08  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...APPLE AND LUCERNE VALLEYS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    HESPERIA
    0.20  0.12  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    VICTORVILLE
    0.17  0.09  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    APPLE VALLEY
    0.14  0.09  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN DIEGO COUNTY COASTAL AREAS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    OCEANSIDE
    0.26  0.23  0.05  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    MIRAMAR
    0.34  0.23  0.04  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    LINDBERGH FIELD
    0.32  0.15  0.02  0.00  0.00  0.00  0.00  0.00  0.00  0.00  
    CHULA VISTA
    0.32  0.17  0.03  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    SAN YSIDRO
    0.33  0.20  0.04  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN DIEGO COUNTY VALLEYS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    FALLBROOK
    0.26  0.30  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    RANCHO BERNARDO
    0.31  0.34  0.08  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    LA MESA
    0.35  0.27  0.05  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
    EL CAJON
    0.33  0.32  0.07  0.02  0.00  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN DIEGO COUNTY MOUNTAINS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    PALOMAR MOUNTAIN
    0.49  0.86  0.20  0.03  0.02  0.00  0.00  0.00  0.00  0.00  
    JULIAN
    0.51  0.94  0.25  0.12  0.02  0.00  0.00  0.00  0.00  0.00  
    MOUNT LAGUNA
    0.46  0.79  0.21  0.12  0.02  0.00  0.00  0.00  0.00  0.00  
    CAMPO
    0.38  0.56  0.15  0.08  0.03  0.00  0.00  0.00  0.00  0.00  
 
 
 ...SAN DIEGO COUNTY DESERTS...
 
    16TUE 22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 
    22TUE 04WED 10WED 16WED 22WED 04THU 10THU 16THU 22THU 04FRI 
 
    BORREGO SPRINGS
    0.11  0.22  0.06  0.06  0.00  0.00  0.00  0.00  0.00  0.00  
 
 

 
 DISCUSSION...COLD UPPER LEVEL LOW PRESSURE WILL MOVE SOUTH JUST OFF 
 THE COAST THROUGH TONIGHT AND THEN MOVE INLAND ACROSS NORTHERN BAJA 
 WEDNESDAY. THE ASSOCIATED COLD FRONT WILL MOVE THROUGH SOUTHWEST 
 CALIFORNIA LATE THIS AFTERNOON AND EVENING WITH NUMEROUS SHOWERS 
 CONTINUING OVERNIGHT AND DECREASING WEDNESDAY. THERE WILL ALSO BE 
 ISOLATED THUNDERSTORMS. 
 
 RAINFALL TOTALS WILL BE QUITE VARIABLE DUE TO THE SHOWERY NATURE OF 
 THE PRECIPITATION. GENERAL WIDESPREAD RAINFALL AMOUNTS ARE EXPECTED 
 TO RANGE FROM ABOUT HALF TO ONE INCH WEST OF THE MOUNTAINS TO ABOUT 
 ONE TO TWO INCHES ON THE COASTAL MOUNTAIN SLOPES. DESERTS SHOULD 
 GENERALLY GET LESS THAN HALF AN INCH OF RAIN. HOWEVER...THERE WILL 
 BE LOCAL LARGER AMOUNTS. 
 
 THE SNOW LEVEL WILL LOWER FROM 5000...TO 4000 THIS EVENING...AND 
 3000 TO 3500 FEET LATE TONIGHT THROUGH EARLY WEDNESDAY. THERE WILL 
 BE LOCAL HEAVY SNOW WITH ACCUMULATIONS OF ABOUT ONE TO TWO FEET IN 
 THE SAN BERNARDINO AND RIVERSIDE COUNTY MOUNTAINS. THE SAN DIEGO 
 COUNTY MOUNTAINS AND SANTA ANA MOUNTAINS SHOULD GET ABOUT HALF TO 
 ONE FOOT OF SNOW. 
 
 PERIODS OF HIGH INTENSITY PRECIPITATION ARE POSSIBLE TONIGHT THROUGH 
 EARLY WEDNESDAY WHICH COULD INCREASE THE RUNOFF AND FLOODING 
 POTENTIAL...ESPECIALLY FOR NORTHERN AREAS NEARLY SATURATED FROM 
 RAINFALL FROM LAST FRIDAY NIGHT AND SATURDAY. 
 
 

 
 ATKIN