000 FXUS66 KLOX 151758 AFDLOX SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1100 AM PDT SUN APR 15 2007 UPDATED AVIATION DISCUSSION AND ADVISORIES ...FROM PREVIOUS DISCUSSION... .SHORT TERM...HAVE ISSUED AN UPDATE AND CANCELLED SNOW AND BLOWING ADVISORY. SPOTTERS THROUGHOUT THE AREA OF THE ADVISORY REPORTED A DUSTING HAD OCCURRED ABOVE 4.5KFT OVERNIGHT. MOISTURE THAT HAD ROTATED AROUND THE LOW LAST NIGHT WAS CENTERED OVER THE SAN JOAQUIN VALLEY THIS MORNING. MODERATE NORTH FLOW AND WEAK ASCENDING FLOW WILL PERSIST OVER THE VALLEY WHILE THE LOW CENTER SHIFTS EAST THROUGH THE AFTERNOON. SNOW LEVEL WAS AROUND 4.5KFT THIS MORNING AND WILL RISE THROUGH THE AFTERNOON TO ABOVE 5KFT. EXPECT LIGHT SNOW ACCUMULATIONS WILL OCCUR OVER THE NON-ROADWAY SURFACES AT TIMES ON THE NORTH FACING SLOPES THROUGH THE AFTERNOON WITH THE BULK OCCURRING IN THE MORNING. HAVE REMOVED PRECIPITATION FROM THE COASTAL AND COASTAL VALLEY AREAS AS MODERATE DESCENDING NORTH FLOW CONTINUES TO DESICCATE THE LEESIDE OF THE TRANSVERS RANGES. WRITTEN BY PREVIOUS SHIFT .LONG TERM (WEDNESDAY-SATURDAY)...THERMAL AND PRESSURE GRADIENTS TREND CONTINUE TO BE TIGHT OVER THE AREA THROUGH SATURDAY MORNING. IT APPEARS A NORTHWEST...NORTH...AND NORTHEAST WIND EVENTS COULD OCCUR THROUGH MID AND LATE WEEK. FORECAST CONTINUES TO TAKE CONSERVATIVE APPROACH. && .AVIATION...15/1800Z VFR CONDITIONS WILL PREVAIL AT MOST AIRFIELDS...WITH SCT050 CU AND AN OUTSIDE CHANCE OF A THUNDERSTORM THROUGH ABOUT 02Z. THE BEST CHANCE OF SUCH ACTIVITY WOULD BE AT KPMD AND KWJF...AND OVER THE MOUNTAINS. WINDY DAY ON TAP NEARLY EVERYWHERE THROUGH THIS EVENING...WITH GUSTS PEAKING TO NEAR 30 KT AT KPMD AND KWJF...AND GUSTS INTO THE 20 KT RANGE ELSEWHERE. LLWS WILL BE A CONCERN EVERYWHERE AS WELL...BUT KBUR KVNY AND KSBA HAVE THE BEST SHOT OF IT REACHING SIGNIFICANT THRESHOLDS. KBUR AND KVNY WIND DIRECTION WILL BE TRICKY...WITH ALL GUIDANCE SHOWING A SOUTHERLY SEABREEZE FLOW THIS AFTERNOON...BUT NORTHWESTERLY FLOW IS DOMINANT JUST ABOVE THE SURFACE. WENT WITH A LATE ARRIVAL SOUTHWEST WIND...BUT WOULD NOT BE SURPRISED TO SEE NORTHWEST WINDS ALL DAY THERE. KLAX...WILL BE VFR THROUGH THIS EVENING...WITH GUSTY WESTERLY WINDS PEAKING AROUND 22Z TO 23Z...GUSTS IN THE 20 KT RANGE LIKELY. SCT060 CU WILL BE FLOATING AROUND...BUT THUNDERSTORM ACTIVITY THERE IS REMOTE...BUT WILL AMEND IF CONDITIONS CHANGE TO A MORE FAVORABLE CONDITION. LLWS MAY BE A CONCERN THIS AFTERNOON...WITH NWLY WINDS ALOFT...BUT NOT CERTAIN THAT IT WILL BE BELOW 2000 FT. KBUR SHOULD BE VFR THROUGH THIS EVENING...WITH AN OUTSIDE SHOT OF A THUNDERSTORM DRIFTING OFF THE MOUNTAINS. SEE FIRST SECTION ABOUT WIND CONCERNS. && .LOX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY (SEE LAXNPWLOX). GALE WARNING (SEE LAXCWFLOX). MARINE WEATHER STATEMENT (SEE LAXMWSLOX). HIGH RIP CURRENT RISK (SEE LAXSRFLOX). HIGHER THAN NORMAL SURF STATEMENT (SEE LAXCFWLOX). && $$ PUBLIC...FORWOOD AVIATION...KITTELL WWW.WEATHER.GOV/LOSANGELES