000 FXUS66 KLOX 072352 AFDLOX SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 350 PM PST SAT NOV 7 2009 ...UPDATED AVIATION SECTION... .SYNOPSIS... WEAK OFFSHORE FLOW WILL BRING WARMER TEMPERATURES TO THE AREA THE NEXT FEW DAYS...ESPECIALLY MONDAY AND TUESDAY. PATCHY FROST IS POSSIBLE ACROSS THE INTERIOR VALLEYS DURING THE EARLY MORNING HOURS. A LOW PRESSURE SYSTEM WILL BRING COOLER TEMPERATURES LATER IN THE WEEK...BUT NO RAIN IS EXPECTED. && .SHORT TERM (TODAY-TUE)...WEAK TROF PASSING THROUGH THE WEST COAST TODAY WITH THE TAIL END OF THE ASSOCIATED COLD FRONT DRAGGING THROUGH SRN CA. ALTHOUGH NO PRECIPITATION WILL OCCUR WITH THE FRONT, BEHIND IT A WEAK TO MODERATE NORTHERLY FLOW WILL DEVELOP. ALREADY GETTING SOME WIND UP IN THE MOUNTAINS THROUGH THE I-5 CORRIDOR AND ALONG THE CENTRAL COAST. SOME WIND WILL LIKELY FILTER DOWN INTO THE SOUTH COAST OF SBA COUNTY TONIGHT AS WELL AS BELOW PASSES AND CANYONS OF THE LA/VTU VALLEYS. THIS WILL ALSO HELP BOOST HIGH TEMPERATURES SUNDAY A FEW DEGREES, ESPECIALLY ALONG THE CENTRAL COAST. SKIES SHOULD REMAIN CLEAR TONIGHT EXCEPT FOR THE LA COUNTY COAST AND ALONG OUR BOUNDARY WITH KERN COUNTY. LOW LVL FLOW TURNS MORE NORTHEASTERLY MONDAY AND TUESDAY, THOUGH SUPPORT ALOFT IS VERY WEAK. SURFACE GRADIENTS ARE OK BUT NOTHING TO WRITE HOME ABOUT. SO ANY OFFSHORE BREEZES THAT DEVELOP WILL BE VERY ISOLATED AND WELL BELOW ADVISORY LEVELS. MAIN IMPACT WILL BE TO HELP BOOST TEMPS SEVERAL DEGREES, WITH WARMER VALLEYS HIGHS BACK INTO THE LOW TO MID 80S AND COASTAL AREAS IN THE 70S. THE WEAK OFFSHORE FLOW COMBINED WITH THE COLD AIR FROM THIS TROF WILL DROP OVERNIGHT LOWS INTO THE 30S AND POSSIBLY EVEN HIGH 20S FOR INTERIOR VALLEYS, ESPECIALLY INTERIOR SLO COUNTY AND THE ANTELOPE VALLEY. FROST ADVISORIES MAY BE REQUIRED FOR MONDAY AND/OR TUESDAY MORNINGS. BY TUESDAY AFTERNOON GRADIENTS START TURNING STRONGLY ONSHORE, BUT THIS WILL LIKELY NOT HAPPEN SOON ENOUGH TO REACH THE VALLEYS SO INLAND AREA HIGHS WILL PROBABLY PEAK TUE WHILE COASTAL AREAS WILL HAVE THEIR WARMEST DAY ON MONDAY. .LONG TERM (WED-SAT)...HIGH PRESSURE WILL BREAK DOWN WED AS AN ADVANCING TROF REACHES THE WEST COAST. THIS WILL RESULT IN A SIZABLE COOLING TREND THROUGH THE END OF THE WEEK, BOTTOMING OUT FRI BEFORE OFFSHORE FLOW RETURNS SAT AND WEAK HIGH PRESSURE BUILDS ALOFT. && && .AVIATION...08/0000Z. GOOD CONFIDENCE IN CURRENT TAFS. CENTRAL COAST WILL LIKELY STAY CAVU TONIGHT WITH BREEZY N TO NE WINDS DEVELOPING THROUGH THE EVENING. ONLY CIGS TONIGHT EXPECTED ALONG THE LA COUNTY COAST...WITH IFR TO LOCAL LIFR CONDS TO FORM BETWEEN 06-09Z...THEN BURNOFF BY 20Z SUN AM. OFFSHORE FLOW DEVELOPING THIS EVENING MAY CAUSE SOME LLWS AND UDDS AT KSBA THROUGH AROUND 08Z TONIGHT. KLAX...GOOD CONFIDENCE IN CURRENT TAF. THERE IS A CHANCE OF MVFR CIGS THROUGH 01Z. IT IS VERY LIKELY THAT CIGS WILL RETURN IN EARNEST BETWEEN 06Z-09Z...WITH IFR AND OCCASIONAL LIFR CONDS EXPECTED. KBUR...HIGH CONFIDENCE IN CURRENT TAF. LIKELY THAT 4SM HZ WILL AFFECT THE AIRFIELD BETWEEN 14Z-18Z...OTHERWISE CLEAR SKIES AND UNRESTRICTED VSBY EXPECTED THROUGH THE PERIOD. VIRTUALLY CERTAIN - 95-100% VERY LIKELY - 80-95% LIKELY - 60-80% CHANCE - 30-60% VERY UNLIKELY - 20% OR LESS && .LOX WATCHES/WARNINGS/ADVISORIES... GALE WARNING (SEE LAXMWWLOX). SMALL CRAFT ADVISORY (SEE LAXMWWLOX). HIGH SURF ADVISORY (SEE LAXCFWLOX). HIGH RIP CURRENT RISK (SEE LAXSRFLOX). MARINE WEATHER STATEMENT (SEE LAXMWSLOX). && $$ PUBLIC...WOFFORD AVIATION...MEIER/30 SYNOPSIS...WOFFORD WWW.WEATHER.GOV/LOSANGELES