Wildfire in California, August 29, 2004

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO
230 PM PDT SUN AUG 29 2004

.SYNOPSIS...A SHALLOW MARINE LAYER AND ONSHORE FLOW WILL CAUSE AREAS
OF COASTAL LOW CLOUDS AND LOCAL DENSE FOG IN THE NIGHTS AND MORNINGS
THROUGH WEDNESDAY. HIGH PRESSURE ALOFT WILL CONTINUE WARM DAYS INLAND.
UPPER LEVEL LOW PRESSURE MOVING IN FROM THE NORTHWEST WILL BRING A
DEEPENING MARINE LAYER AND COOLING TOWARD THE END OF THE WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES.

.SHORT TERM...LOW CLOUDS AND FOG WERE INTO ALL COASTAL AREAS...MOST
SAN INLAND VALLEY AND FAR WRN INLAND EMPIRE THIS AM. THERE WAS PATCHY
DENSE FOG IN THE INLAND VALLEYS. STRATUS CLEARING BACK TO THE OUTER
WATERS BY NOON. THE 12Z NKX SOUNDING HAD A FAIRLY STRONG INVERSION
BASED NEAR 1500 FT. ONSHORE GRADIENTS WITH 4-5 MB SAN-IPL.

UPPER HI CONTINUES ALOFT INTO WED WITH A SLOW UPWARD TREND IN LOCAL
THICKNESS AND 850 MB TEMPS. THIS WILL CONTINUE A GRADUAL WARMING TREND
INLAND MON AND TUE WITH LITTLE CHANGE ON WED. A SHALLOW MARINE LAYER
AND ONSHORE FLOW TO DEVELOPING THERMAL LOW PRESSURE IN THE DESERTS
WILL MODERATE MAX TEMPS NEAR THE COAST. A LOW AND STRONG INVERSION
WILL MAKE STRATUS SLOW TO CLEAR FROM SOME BEACHES. THERE SHOULD
CONTINUE TO BE LOCAL DENSE FOG IN THE INLAND COASTAL AREAS AND WRN
INLAND VALLEYS. GENERALLY LIGHT WINDS CAN BE EXPECTED WITH THE NORMAL
AFTERNOON SEA BREEZES.

.LONG TERM...LONGER RANGE PROGS DISAGREE ON THE DETAILS BUT GENERALLY
MOVE AN UPPER THROUGH THU AND FRI FOLLOWED BY FLAT OR JUST WEAKLY
CYCLONIC FLOW ALOFT. THIS SHOULD BRING COOLING AND A DEEPENING MARINE
LAYER THU AND FRI FOLLOWED BY A LITTLE WARMING AND LESS MARINE LAYER
SAT AND SUN. PROGS BECOMING LESS BULLISH ABOUT BRINGING TROPICAL
MOISTURE INTO OUR AREA OVER THE WEEKEND...BUT WILL HAVE TO BE WATCHED.

.SGX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

ATKIN