SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NWS LOS ANGELES/OXNARD CA
AFDLOX 815 PM PST SUN JAN 19 2003
WEAK UPPER LOW SPINNING OFF THE NORTHERN BAJA COAST WILL
DRIFT SLOWLY EASTWARD OVER THE NEXT 24 HOURS. MAIN IMPACT
ON OUR AREA WILL BE INCREASING ONSHORE FLOW WITH GREATER
MARINE LAYER INFLUENCE. 00Z VANDENBERG SOUNDING SHOWING MARINE
LAYER DEPTH ABOVE 1500 FEET...WHILE ACARS DATA INDICATING
MARINE LAYER DEPTH AROUND 1000 FEET ACROSS LA BASIN. PRESSURE
GRADIENTS TRENDING ONSHORE THIS EVENING...AND WILL CONTINUE TO
TREND THIS WAY THROUGH MONDAY. LATEST SATELLITE IMAGERY SHOWING
A RESURGENCE OF LOW CLOUDS AND FOG NORTH OF POINT CONCEPTION.
WOULD EXPECT STRATUS TO FILL IN ACROSS MOST COASTAL AREAS TONIGHT...
POSSIBLY REACHING SOME OF THE LOWER VALLEYS. AS ONSHORE GRADIENTS
INCREASE MONDAY AFTERNOON...STRATUS WILL LIKELY LINGER ACROSS SOME
OF THE COASTAL AREAS. THIS WILL LEAD TO A GREATER MARINE LAYER
COVERAGE MONDAY NIGHT...SURGING WELL INTO THE VALLEYS.
COOLING TREND BEGAN TODAY...BUT ADDITIONAL COOLING EXPECTED ON
MONDAY AND TUESDAY AS ONSHORE GRADIENTS AND MARINE LAYER DEPTH
INCREASE. ABUNDANT LOW LEVEL MOISTURE EXPECTED TO MOVE INTO
CENTRAL COAST ON MONDAY NIGHT AND TUESDAY...YIELDING MOSTLY CLOUDY
CONDITIONS. WITH NO DYNAMICS ASSOCIATED WITH THIS MOISTURE...
NO POPS MENTIONED AT THE MOMENT...BUT WILL HAVE TO KEEP EYE ON THE
SITUATION. ANOTHER UPPER LEVEL RIDGE BUILDS ACROSS THE REGION
NEXT WEEKEND...LEADING TO ANOTHER WARMING TREND.
LAX 0000. GOMBERG
.LOX...NONE.