FXUS66 KLOX 230010 AAA
AFDLOX
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
410 PM PST TUE DEC 22 2009
UPDATE FOR NEW AVIATION DISCUSSION
.SYNOPSIS...
COLD AND WINDY CONDITIONS WILL CONTINUE...GUSTY WINDS WILL AFFECT
MOUNTAINS, PASSES, CANYONS AND THE GRAPEVINE. A GRADUAL WARMING
TREND IS EXPECTED THROUGH CHRISTMAS. A STORM SYSTEM MAY APPROACH
EARLY NEXT WEEK WITH A CHANCE OF RAIN AND A COOLING TREND.
&&
.SHORT TERM...WILL CONTINUE WITH HIGH WIND WARNINGS AND WIND
ADVISORIES THROUGH THE EVENING AND EARLY MORNING. GUIDANCE WAS
CONSISTENT WITH PREVIOUS RUNS AND NORTH WINDS WILL DIMINISH AS THE
TROUGH CONTINUES MOVING EAST. HAVE ISSUED A FROST ADVISORY FOR SANTA
BARBARA SOUTH COAST...VENTURA COASTAL VALLEYS AS WELL AS FOR SAN
FERNANDO VALLEY AND THE SANTA MONICA RANGE TONIGHT. DRY AIR MASS
WILL SETTLE OVER THE AREA TONIGHT AND UNDER CLEAR SKIES MIN
TEMPERATURES WILL LIKELY RANGE FROM 10 TO 15 DEGREES BELOW
NORMAL...MIN TEMPERATURES WILL MODERATE OVER THE COASTAL VALLEYS WED
NIGHT THOUGH WILL LIKELY REMAIN 5 TO 10 DEGREES BELOW SEASONAL
NORMAL...INLAND AND HIGHER ELEVATIONS WILL REMAIN 15 TO 20 DEGREES
BELOW NORMAL THROUGH FRI MORNING. OTHERWISE MADE MINOR CHANGES...AND
WARMING TREND WILL CONTINUE AS A RIDGE UPSTREAM APPROACHES AND
BUILDS OVER THE AREA THROUGH FRIDAY.
.LONG TERM...HAVE INCLUDED A SLIGHT CHANCE OF PRECIPITATION OVER THE
NORTH HALF OF THE AREA SATURDAY AND SATURDAY NIGHT AND INCLUDED
SLIGHT CHANCE POPS NEXT TUE OVER THE ENTIRE AREA...OTHERWISE MADE
MINOR CHANGES AND WILL CONTINUE WITH CHANCE POPS OVER THE ENTIRE
AREA SUNDAY AND MONDAY. LONG WAVE RIDGE WILL LIKELY PERSIST OVER THE
AREA AND DAMPEN EASTWARD MOVING AND APPROACHING TROUGHS SATURDAY
THROUGH TUESDAY...ENSEMBLE WAS INDICATING THE BULK OF THE MOISTURE
SKIRTING THE NORTH HALF OF THE AREA WITH A CHANCE OF LIGHT
PRECIPITATION SUNDAY AND AGAIN TUE OVER THE ENTIRE AREA.
&&
.AVIATION...23/0006Z...HI CONFIDENCE IN CURRENT TAF PACKAGE. LLWS
CONDITIONS ARE LIKELY IN AND AROUND KSBA THRU TONIGHT. LOCAL LLWS
CONDITIONS AT TIMES WILL BE POSSIBLE THRU THIS EVENING IN AND AROUND
KVNY AND KBUR AS WELL. GUSTY NW TO N WINDS AT TIMES WILL AFFECT KLAX
THIS EVENING.
KLAX...HI CONFIDENCE IN CURRENT TAF. GUSTY NW TO N WINDS ARE
EXPECTED TO AFFECT THE AIRFIELD AT TIMES THIS EVENING.
KBUR...HI CONFIDENCE IN CURRENT TAF. GUSTY N WINDS WILL AFFECT THE
AIRFIELD INTO THIS EVENING...WITH LOCAL LLWS CONDITIONS NOT OUT OF
THE QUESTION AT TIMES.
&&
.LOX WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING (SEE LAXNPWLOX).
WIND ADVISORY (SEE LAXNPWLOX).
FROST ADVISORY (SEE LAXNPWLOX).
HIGH SURF ADVISORY (SEE LAXCFWLOX).
GALE WARNING (SEE LAXCWFLOX).
&&
$$
PUBLIC...30
AVIATION...SIRARD
SYNOPSIS...STERNS
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