FXUS66 KSGX 292113
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
130 PM PST SUN NOV 29 2009

.SYNOPSIS...WEAK HIGH PRESSURE ALOFT WILL BUILD OVER THE AREA 
THROUGH TUESDAY. AN OFFSHORE FLOW WILL DEVELOP TODAY WITH NORTHEAST 
WINDS ALOFT AND CONTINUE THROUGH MONDAY MORNING WITH GUSTY NORTH TO 
NORTHEAST WINDS AT TIMES...MAINLY BELOW PASSES AND CANYONS. THE HIGH 
PRESSURE ALOFT WILL WEAKEN LATE WEDNESDAY INTO THURSDAY...OTHERWISE 
LITTLE CHANGE.

&&

.DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... 
ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES.

OFFSHORE FLOW IS INCREASING OVER THE AREA THIS AFTERNOON WITH NEARLY 
8 MBS BETWEEN KTPH AND KSAN AND TRENDING STRONGER OFFSHORE. MDCRS 
DATA ALSO SHOWS NORTHEAST WINDS 30 TO 40 KNOTS ABOVE ABOUT 3000 FEET 
ACROSS THE AREA AND WINDS ARE BEGINNING TO SURFACE OVER THE INLAND 
EMPIRE AREA AND OTHER USUAL WINDY SPOTS. HAVE EXTENDED THE WIND 
ADVISORY FOR THE SAN BERNARDINO MOUNTAINS TO 2 PM MONDAY. WIND GUST 
AT FREMONT CANYON IN THE FOOTHILLS OF THE SANTA ANA MOUNTAINS HAS 
ALREADY REACHED 49 MPH AS OF NOON TODAY. EXPECT WINDS TO INCREASE 
THROUGH THE AFTERNOON THEN SLACKEN OFF TOWARDS SUNSET THEN 
STRENGTHEN AGAIN BEFORE SUNRISE ON MONDAY. WINDS SHOULD DIE OFF 
QUICKLY DURING THE DAY ON MONDAY.

WRAP AROUND MOISTURE HAS DECREASED OVER THE AREA EXCEPT FOR SOME UP 
SLOPE CLOUDS REMAINING ALONG THE NORTHEAST SIDES OF THE SAN 
BERNARDINO AND RIVERSIDE COUNTY MOUNTAINS. EXPECT THESE CLOUDS TO 
DISSIPATE THIS EVENING.

12Z MODELS CONTINUE TO SHOW RIDGING OVER THE AREA THROUGH TUESDAY 
WITH SOME WARMING OVER THE AREA. MEDIUM RANGE MODELS ARE STILL IN 
DISAGREEMENT WITH THE SHORTWAVE EXPECTED ON WEDNESDAY. THIS 
SHORTWAVE DOES APPEAR TO BE WEAK SO EVEN IF IT DOES MOVE IN INSTEAD 
OF GOING SOUTH INTO BAJA...LIKELY TO NOT HAVE MUCH IMPACT EXCEPT FOR 
A DEEPER MARINE LAYER AND SOME COOLING. MODELS DO HINT AT THE 
POSSIBILITY OF A STRONGER SHORTWAVE MOVING IN LATE NEXT WEEKEND.

&&

.AVIATION...
292000Z...EXCEPT FOR PATCHY CU AND AREAS OF STRATOCU BASED NEAR 
FL070 OVER THE MOUNTAINS...SKIES ARE MOSTLY CLEAR AND VIS 
UNRESTRICTED. SOME VIS RESTRICTIONS STILL POSSIBLE OVER THE HIGHEST 
TERRAIN THROUGH THIS EVENING. A FEW MORE AREAS OF MID-LEVEL CLOUDS 
AROUND FL090 TO DRIFT OVER EASTERN AND SOUTHERN SECTIONS OF THE AREA 
OVERNIGHT BUT THE TREND WILL BE FOR DRYING UNDER NE FLOW ALOFT.

NE WINDS ALOFT FROM 25 TO 40 KT WILL AFFECT THE HIGHER TERRAIN 
THROUGH 16Z MON AND MAY PRODUCE MOUNTAIN WAVE AND ROTOR ACTIVITY 
OVER THE INLAND EMPIRE. THESE WINDS MAY SURFACE AT TIMES RESULTING 
IN STRONG WIND GUSTS. LLWS WILL BE A THREAT...ESPECIALLY IN THE 
VICINITY OF KONT...KRAL...KRIV...AND KSNA. GUSTY N TO NW WINDS MAY 
ALSO IMPACT KPSP AND KTRM AT TIMES. 

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FOR THE SAN BERNARDINO MOUNTAINS NOW IN EFFECT
     UNTIL 2 PM MONDAY.

     WIND ADVISORY FOR THE INLAND EMPIRE AND THE SANTA ANA 
     MOUNTAINS UNTIL 2 PM MONDAY.

&&

$$

PUBLIC...HORTON
AVIATION/MARINE...JAD