FXUS66 KHNX 181636
AFDFAT

INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
930 AM PDT WED JUN 18 2003

WATER VAPOR SATELLITE SHOWS AN UPPER TROUGH ALONG THE CALIFORNIA 
COAST MOVING EAST. LEADING FRONTAL BOUNDARY IS OVERSPREADING THE 
COASTAL RANGES AT THE MOMENT. MARINE LAYER HAS INCREASED TO NEAR 2K 
FEET AND ONSHORE GRADIENTS FROM SALINAS TO RENO HAVE TRIPLE SINCE 
YESTERDAY. EXPECT BEST COOLING TOWARDS MERCED AS MARINE AIR 
CONTINUES TO SPILL THROUGH THE DELTA AND PANOCHE PASS. BUT LITTLE 
COOLING IN THE SOUTH VALLEY AND THE KERN COUNTY MOUNTAINS. THE 
LATEST MESOETA MODEL INDICATES THE POTENTIAL FOR AFTERNOON 
CONVECTION ACROSS THE MOUNTAINS WITH INSTABILITY LIS -1 AND CAPES TO 
500 JOULES/KG. MODELS ALSO PROG MID LEVEL MOISTURE INCREASING THIS 
AFTERNOON AND TONIGHT. WILL ISSUE A MORNING UPDATE TO MENTION 
INCREASE CLOUD COVER AND ISOLATED THUNDERSTORMS THIS AFTERNOON AND 
EVENING. 

.HNX...NONE.

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MV