EXTREME SOUTHWESTERN CALIFORNIA AREA FORECAST DISCUSSION
NWS SAN DIEGO CA
AFDSAN 330 AM PST WED FEB 13 2002
.SYNOPSIS...HIGH PRESSURE WILL WEAKEN WITH A TROUGH OF LOW PRESSURE
MOVING ACROSS SOUTHERN CALIFORNIA SUNDAY AND MONDAY BRINGING A
CHANCE OF SHOWERS. DAYTIME TEMPERATURES WILL GRADUALLY COOL THROUGH
SUNDAY WITH A COASTAL EDDY BRINGING INCREASED NIGHT AND MORNING LOW
CLOUDS AND FOG WEST OF THE MOUNTAINS THROUGH FRIDAY.
.DISCUSSION...AVN IN MUCH BETTER AGREEMENT WITH THE EURO MDLS AND
GENERALLY PREFERRED WITH SYNOPTIC DETAILS FOR THE NEXT 5 DAYS.
FALLING HEIGHTS ALF AND A CSTL EDDY SHOULD RESULT IN DEEPENING
MARINE LYR AND INCRD MARINE INFLUENCE W OF THE MTNS THRU FRI.
AMPLITUDE OF THE UPR TROUGH SHOWN BY THE AVN/MRF FOR SUN WOULD BE
SUFFICENT TO BRING SOME SHOWERS...THOUGH NOTHING HVY...WITH SHOWERS
POSSIBLY LINGERING INTO MON. EURO MDLS ARE A LTL WKR WITH THE UPR
TROUGH FOR SUN/MON...BUT NOT ENOUGH TO ENSURE DRYNESS. WITH THE FLOW
OF HIGH CLOUDS ACROSS SRN CA TODAY...HAVE ADJUSTED CLOUD COVER
WORDING FOR MOST AREAS TO PARTLY CLOUDY. ACARS SOUNDINGS SHOWED THE
BASE OF THE MARINE INVERSION NR THE SURFACE WITH THE TOP NR 1000
FT...FAVORABLE FOR DENSE FOG FM THE CST INLAND TO THE MESAS. EFFECT
OF THE HIGH LVL MSTR SHOULD BE TO KP STRATUS COVERAGE SOMEWHAT
PATCHY AND HELP TO KP DENSE FOG FM LINGERING AT ANY ONE LOCATION TOO
LONG.
.SAN...NONE.
MARTIN