Hail in California, August 4, 2003

NORTHWEST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
230 PM PDT MON AUG 4 2003

THE VERY DEEP MARINE LAYER CONTINUES ALONG THE CALIFORNIA COAST THIS
AFTERNOON...WITH FORT ORD PROFILER SHOWING A LAYER DEPTH NEAR 4000
FT. STRATUS CLOUD DECK HAS REMAINED IN PLACE OVER THE REDWOOD COAST
ZONE AS OF 2 PM...EXTENDING INLAND OVER THE COASTAL HILLS AND SOUTH
DOWN THE EEL RIVER VALLEY...WITH CEILINGS RISING TO NEAR 2000 FT AT
ACV AND CEC. IN ADDITION...VIS IMAGERY SHOWS CU DEVELOPING OVER ALL
OF TRINITY COUNTY THIS AFTERNOON WITH A FEW SHOWERS EVIDENT IN KBHX
REFLECTIVITY DATA.

HAVE MADE FEW CHANGES TO CURRENT FORECAST PACKAGE. FOR THE SHORT
TERM HAVE MAINTAINED AFTERNOON AND EVENING SHOWERS OVER THE NORTHERN
HALF OF CWA...WITH A CHANCE OF THUNDERSTORMS AND POSSIBLE STRONG
STORMS OVER THE INTERIOR MOUNTAINS. THE 12Z MODEL RUNS SHOW GOOD LOW
LEVEL MOISTURE WITH LIS TO -3 OVER EASTERN TRINITY COUNTY...AND THE
OFFSHORE TROUGH WILL BE EDGING ONSHORE AFTER 00Z PROVIDING LARGE
SCALE LIFT FOR CONVECTION. IN ADDITION...MODELS FORECAST COLD THIS
EVENING. EXPECT SHOWER ACTIVITY TO DECREASE TOWARD MORNING AS THE
INITIAL VORT MAX LIFTS NEWD ALONG THE COAST INTO OREGON. ANOTHER
VORT MAX WILL DROP SOUTH INTO THE OFFSHORE WATERS FROM THE GULF OF
ALASKA...TO ROUND THE BASE OF THE OFFSHORE TROUGH AND MOVE ONSHORE
NORTHERN CALIF WED AFTERNOON. WILL KEEP SLIGHT CHANCE POPS OVER
NORTHERN CWA THROUGH WED EVENING AS THIS FEATURE MOVES THROUGH.

BY THU THE GFS PROGS A LARGE LOW PRES SYSTEM TO MOVE SOUTH INTO THE
PAC NW WATERS...WITH A MEAN TROUGH TO REMAIN OVER THE EASTERN
PACIFIC THROUGH THE FORECAST PERIOD. HAVE INDICATED SLIGHT CHANCE
POPS ACROSS THE NORTHERN CWA THU DAYTIME AS THE INITIAL VORT MAX
ROTATES ACROSS THE WESTERN CALIF/OREGON BORDER. THE REMAINER OF THE
FORECAST WILL KEEP DRY FOR NOW...ALTHOUGH LAST NIGHTS GFS INDICATES
SHOWERS POSSIBLE FOR DAY 7.  CILIBERTI.

.EKA...NONE.

CAZ001>004-076-051200-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
500 AM PDT MON AUG 04 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA

.DAY ONE...TODAY

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND
EVENING ACROSS TRINITY...HUMBOLDT...AND DEL NORTE COUNTIES. A FEW OF
THESE STORMS MAY BECOME STRONG LATE THIS AFTERNOON...PARTICULARLY IN
NORTHERN TRINITY COUNTY. FREQUENT LIGHTNING...STRONG WINDS...AND
ISOLATED HAIL ARE POSSIBLE WITH ANY STRONG STORMS THAT MAY DEVELOP.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ON TUESDAY AND WEDNESDAY.
SOME STORMS EARLY TUESDAY MAY PRODUCE HEAVY RAIN.

.INSTRUCTIONS TO SPOTTERS...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.