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000 FXUS66 KLOX 181044 AFDLOX SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 345 AM PDT THU SEP 18 2008 .SHORT TERM... OFFSHORE TRENDS AND MUCH ABOVE NORMAL 850 MB HUMIDITIES HAVE DONE A NUMBER ON THE MARINE LAYER WITH ONLY PATCHY LOW CLOUDS AROUND THE L.A. AND CATALINA COASTS. SMALL WORRY WITH THOSE HIGH 850 DEW POINTS INTERACTING WITH A SMALL DEFORMATION ZONE AND BUBBLING UP SOME CONVECTION EARLY THIS MORNING...BUT SATELLITE SHOWS NO ACTIVITY AND KEPT MENTION OUT OF THE FORECAST BUT WILL HAVE TO MONITOR. THIS AFTERNOON THAT SAME MOISTURE WILL CAUSE PARTLY CLOUDY SKIES AND A SLIGHT CHANCE OF TSTMS OVER THE VTA AND LA MTNS AS WELL AS THE ANTELOPE VALLEY. MDLS CONTINUE TO SHOW NO MARINE LAYER TONIGHT AS THEY HAVE BEEN FOR THE PAST FEW DAYS AND GIVEN THE CLEAR SKIES AT THE MOMENT WILL KEEP SKIES CLEAR. TEMPS WILL BE VERY SIMILAR TO TODAYS VALUES BUT SINCE THERE WILL BE NO MID LEVEL MOISTURE THERE WILL BE NO TSTM THREAT. IN THE WAKE OF A WEAK TROF ONSHORE FLOW SHOULD INCREASE ENOUGH TO BRING MARINE CLOUDS BACK TO THE CENTRAL COAST. THERE IS A CHANCE OF LOW CLOUDS SOUTH OF POINT CONCEPTION BUT FOR NOW WILL LEAVE THEM OUT. .LONG TERM... && .AVIATION... 18/1100Z. KLAX... KBUR... && .LOX WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY (SEE LAXMWWLOX). && $$ PUBLIC...RORKE AVIATION...BRUNO WWW.WEATHER.GOV/LOSANGELES