Special Marine Warning 6, NWS Eureka, CA

NORTHWEST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
530 AM PDT WED SEP 03 2003

MAIN CONCERN IS THUNDERSTORMS MOVING UP FROM THE SOUTH.  ONE
THUNDERSTORM CELL IS ABOUT 80 MILES OFF THE MENDOCINO COAST AND IS
PARALLELING THE COAST AS IT MOVES NORTH. MORE THUNDERSTORMS HAVE
DEVELOPED OVER THE BAY AREA AND THEIR TRAJECTORY WOULD TAKE THEM
INTO LAKE COUNTY AND JUST SKIRT EAST OF MENDOCINO COUNTY. MESOETA
SEEMS TO HAVE BETTER HANDLE ON INSTABILITY THAN GFS AT IT BRINGS
HIGHEST CAPES UP ACROSS MENDOCINO COUNTY TODAY AND THEN INTO
HUMBOLDT AND TRINITY COUNTY LATER THIS AFTERNOON AND TONIGHT.
DYNAMICS ARE NOT IMPRESSIVE BUT WILL STILL HAVE SURFACE TEMPERATURES
NEAR 100 AT TEMPS AND AT 500MB ARE ABOUT -10 C SO LAPSE RATES ARE
STEEP. DYNAMICS ARE SLIGHTLY BETTER ON THURSDAY AS WHATS LEFT OF
LOW NEAR 37N 129W MOVES OVER AREA. BIGGEST PROBLEM IS HOW MUCH RAIN
THERE WILL BE INITIALLY WITH THUNDERSTORMS.  DEWPOINTS ARE COMING UP
SOMEWHAT BUT THEY ARE STILL IN THE UPPER 20S AND 30S.  WILL HOLD OFF
ON ANY RED FLAG PRODUCTS UNTIL COORDINATED WITH SURROUNDING OFFICES.
OTHER MINOR CONCERN TODAY IS THE SOUTHERLY SURGE WHICH HAS PRODUCED
DENSE FOG NEAR THE COAST. THIS IS VERY SHALLOW AND SHOULD DISSIPATE
THIS MORNING.

BREAK IN THE PRECIPITATION ON FRIDAY AS THE RIDGE SHIFTS EAST.
UNUSUAL FOR THIS TIME OF YEAR BUT PROGS CONSISTENT IN BRINGING A
FULL LATITUDE TROUGH THROUGH SUNDAY NIGHT PRECEDED BY ASSOCIATED
FRONT SATURDAY NIGHT. SHOULD HAVE ANOTHER CHANCE OF SHOWERS BUT NO
THUNDERSTORMS. ANOTHER FRONT COMES THROUGH ON TUESDAY CONTINUING THE
THREAT OF SHOWERS. BRIEF OFFSHORE FLOW ON THURSDAY BUT NOT AS STRONG
AS YESTERDAYS GFS SHOWED.  NEW RUNS TAKES ANOTHER TROUGH THROUGH
PACIFIC NORTHWEST ON FRIDAY AND DRAGS SOME HIGHER RH VALUES ALONG
THE OR-CA BORDER. DEAN

.EKA...NONE

CAZ001-003-004-076-041230-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
530 AM PDT WED SEP 3 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA

.DAY ONE...TODAY

THERE IS A SLIGHT CHANCE TODAY OF THUNDERSTORMS SPREADING UP FROM
THE SOUTH TODAY. ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE
POTENTIAL TO PRODUCE GUSTY WINDS...OCCASIONAL LIGHTNING...AND SOME
SMALL HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

FOR THURSDAY...SCATTERED SHOWERS WILL CONTINUE OVER EASTERN HUMBOLDT
AND TRINITY COUNTIES.

FOR SUNDAY THROUGH TUESDAY...RAIN SHOWERS ARE POSSIBLE STARTING LATE
SATURDAY NIGHT AS A COLD FRONT MOVES THROUGH NORTHWEST CALIFORNIA.
THE ASSOCIATED TROUGH WILL PASS LATE SUNDAY NIGHT CONTINUING THE
THREAT OF SHOWERS WITH YET ANOTHER WEAK FRONT CROSSING EXTREME
NORTHWEST CALIFORNIA ON TUESDAY.

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

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT
(LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/EUREKA