Wildfire in California, August 24 to 25, 2002

EXTREME SOUTHWESTERN CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
330 AM PDT SAT AUG 24 2002

.SYNOPSIS...A SHALLOW MARINE LAYER AND ONSHORE FLOW WILL CAUSE AREAS OF
NIGHT AND MORNING COASTAL LOW CLOUDS AND PATCHY DENSE FOG. OTHERWISE...
BUILDING HIGH PRESSURE WILL CONTINUE FAIR WEATHER WITH A WARMING TREND
THROUGH THE WEEKEND. WEAK UPPER LEVEL LOW PRESSURE WILL BRING A LITTLE
COOLING AND AN INCREASING MARINE LAYER TOWARD THE MIDDLE OF NEXT WEEK.

.DISCUSSION...AREAS OF LOW CLOUDS/FOG NEAR THE COAST EARLY THIS AM...
OTHERWISE MOSTLY CLEAR. 00Z NKX SOUNDING HAD INVERSION BASED BELOW
1000 FT WITH DRY WLY WINDS ALOFT. ONSHORE GRADIENTS WITH ABOUT 6 MB
SAN-IPL.

UPPER HI BUILDS OVER THE SW INTO SUN. THE HI WEAKENS JUST A LITTLE ON
MON AS A TROUGH MOVES ONSHORE TO THE N. THE MARINE LAYER WILL REMAIN
CONFINED UNDER A FAIRLY LOW INVERSION AND THERE WILL BE LOCAL DENSE
EARLY MORNING FOG NEAR THE COAST. OTHERWISE...FAIR WITH WARMER DAYS...
ESPECIALLY IN THE INLAND VALLEYS...MOUNTAINS AND DESERTS. ONSHORE
GRADIENTS TO DESERT THERMAL LOW WILL CAUSE THE USUAL AFTERNOON SEA
BREEZE THAT WILL MODERATE MAX TEMPS NEAR THE COAST.

LONGER RANGE PROGS INDICATE A WEAK TROUGH NEAR THE W COAST THROUGH MID
WEEK WITH THE UPPER HI SUPPRESSED TO THE SE FOR A LITTLE COOLING AND
INCREASING MARINE LAYER. THE HI SHOULD START TO REBUILD TOWARD THE END
OF NEXT WEEK.

.SAN...NONE.

ATKIN