FXUS66 KEKA 082236
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
235 PM PST TUE DEC 8 2009

.SYNOPSIS...THE COLD AIRMASS WILL REMAIN IN PLACE FOR AT LEAST ONE
MORE DAY WITH MORE RECORD LOWS POSSIBLE. A SLOW WARMING TREND WILL 
COMMENCE BY THURSDAY WITH RAIN CHANCES SUBSTANTIALLY INCREASING 
HEADING INTO THE WEEKEND.
&&

.SHORT TERM...TONIGHT THROUGH FRI NIGHT...COLD TEMPERATURES WILL 
CONTINUE ACROSS NW CA AGAIN TONIGHT. MOSTLY CLEAR SKIES WILL ALLOW 
FOR NEAR OPTIMUM RADIATIONAL COOLING ALLOWING TEMPS TO DROP INTO THE 
MID 20S AND A HARD FREEZE WARNING HAS BEEN ISSUED FOR THE REDWOOD 
AND MENDOCINO COASTS AGAIN OVERNIGHT INTO WED MORNING. CHANGE IN THE 
UPPER AIR PATTERN EXPECTED TO BEGIN FRI AS A SHORT WAVE UNDERCUTS 
THE RIDGE OVER THE NE PAC AND A MORE ZONAL FLOW SETS UP OVER THE W 
CONUS. PRECIP CHCS WILL INCREASE FRI AS THE SHORT WAVE APPROACHES 
THE COAST. THIS MORE PROGRESSIVE PATTERN WILL RESULT IN MORE ACTIVE 
WX ACROSS NW CA HEADING INTO THE WEEKEND.

.LONG TERM...SATURDAY NIGHT THROUGH TUESDAY...A STORM MOVING OVER 
NORTHWEST CALIFORNIA WILL BRING PRECIPITATION SATURDAY NIGHT INTO 
SUNDAY MORNING. THERE'S STILL SOME UNCERTAINTY REGARDING QPF 
AMOUNTS, HOWEVER SNOW LEVELS WILL BE RUNNING AROUND 4000 FT. SUNDAY 
IS LOOKING DRY, BUT ANOTHER STORM WILL THREATEN THE REGION MONDAY 
INTO TUESDAY. STROZ
&&

.MARINE...BUOYS CONTINUE TO SHOW A LONG PERIOD WESTERLY SWELL NEAR 
10 TO 12 FT PROPAGATING THROUGH THE WATERS WITH SOME MIXED SWELL 
FROM THE NORTH NEAR 3 TO 4 FT OVER THE OUTER WATERS. THE NORTH SWELL 
WILL DIMINISH TONIGHT WHILE THE WEST SWELL WILL GRADUALLY DIMINISH 
IN HEIGHT AND PERIOD THROUGH THE END OF THE WEEK. A WEAK PRESSURE 
GRADIENT WILL CONTINUE TO BRING LIGHT WINDS TO THE WATERS THROUGH 
THURSDAY. A STORM WILL APPROACH TOWARDS THE END OF THE WEEK, 
BRINGING INCREASED WINDS FROM THE SOUTH AND MIXED SEAS. STROZ
&&

.AVIATION...VISIBLE SATELLITE SHOWS MOSTLY CLEAR SKIES ACROSS 
NORTHWEST CALIFORNIA. VFR CONDITIONS WILL PREVAIL THROUGH THE 
EVENING UNDER LIGHT OFFSHORE FLOW. STROZ
&&

.EKA WATCHES/WARNINGS/ADVISORIES...
HARD FREEZE WARNING FROM 9 PM TONIGHT THROUGH 9 AM PST WED MORNING 
FOR CAZ001-002.
SCA FOR HAZARDOUS SEAS FOR PZZ450-455-470-475.
&&

$$

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