SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
300 AM PDT SUN APR 21 2002

SYNOPTICALLY...00Z MODELS IN GOOD AGREEMENT THROUGH TUESDAY...AS
A UPPER LOW DROPS SOUTH-SOUTHWEST OVER THE EASTERN PACIFIC WITH
THE LOW BOTTOMING OUT AROUND 30N 130W ON TUESDAY. WITH THIS PATTERN
H5 HEIGHTS INCREASE ACROSS THE AREA WHICH WILL HELP SQUASH...BUT
STRENGTHEN...MARINE INVERSION. WITH FLOW REMAINING WEAKLY ONSHORE
THROUGH TUESDAY...WILL EXPECT PATCHY MARINE LAYER TO CONTINUE ALONG
COASTAL ZONES. OTHERWISE...WILL EXPECT MOSTLY CLEAR SKIES THROUGH
TUESDAY...AS MODEL RELATIVE HUMIDITY PROGS DO NOT INDICATE THAT
CIRCULATION AROUND THE UPPER LOW WILL ENTRAIN ANY SIGNIFICANT
MID/HIGH LEVEL MOISTURE.

AS FOR TEMPS...TODAY WILL BE SLIGHTLY WARMER THAN SATURDAY WITH
SLIGHT INCREASE IN THICKNESSES/BOUNDARY LAYER TEMPS. MORE DRAMATIC
WARMING WILL TAKE PLACE ON MONDAY...WITH MODERATE INCREASE IN
THICKNESSES/BOUNDARY LAYER TEMPS. ON TUESDAY...THICKNESSES/BOUNDARY
LAYER TEMPS LEVEL OFF...SO WILL EXPECT TEMPS SIMILAR TO MONDAY.