SPECIAL WEATHER STATEMENT
Issue Date: 1052 AM PST FRI DEC 4 2009
Expiration: 700 AM PST SAT DEC 05 2009
...MUCH COLDER TEMPERATURES AND LOW SNOW LEVELS THIS WEEKEND
FOLLOWED BY ANOTHER SIGNIFICANT STORM SYSTEM BY MID WEEK...
A STORM DROPPING OUT OF CANADA WILL BEGIN TO AFFECT NORTHWEST
CALIFORNIA LATE SATURDAY AS MUCH COLDER AIR FILTERS IN THE
REGION. THIS SYSTEM MAY BRING PRECIPITATION TO THE AREA AS EARLY
AS SUNDAY AFTERNOON...ALTHOUGH MOST OF THE ACTIVITY WILL HOLD OFF
UNTIL SUNDAY NIGHT. SNOW LEVELS MAY DROP TO AS LOW AS 2000 TO
3000 FEET...AND LOCALLY AS LOW AS 1000 FEET IN COLDER VALLEY
LOCATIONS. AT THIS TIME...SNOW ACCUMULATIONS OF A FEW INCHES ARE
POSSIBLE IN THE HIGHER TERRAIN WITH PERHAPS AN INCH OR TWO AS LOW
AS 1000 FEET. THE EXACT TIMING AND AMOUNT OF MOISTURE AVAILABLE
WITH THIS SYSTEM REMAIN UNCLEAR...SO STAY TUNED TO FUTURE
FORECASTS AND POSSIBLE STATEMENTS OR ADVISORIES. A FEW
THUNDERSTORMS MAY ALSO OCCUR...MAINLY NEAR AND ALONG THE COAST
LATE SUNDAY.
THE COLDEST AIR WILL ARRIVE BY LATE SUNDAY NIGHT INTO MONDAY
MORNING...WITH TEMPERATURES FALLING INTO THE TEENS AND LOW 20S IN
INLAND AREAS. LOWS TEMPERATURES ON MONDAY MORNING MAY ALSO BOTTOM
OUT IN THE MID 20S TO LOW 30S ALONG THE COAST. A FREEZE WARNING
MAY ULTIMATELY BE NEEDED FOR THIS PERIOD.
AFTER A BRIEF BREAK IN THE WEATHER ON TUESDAY...A SIGNIFICANT
PATTERN CHANGE TOWARDS MUCH WETTER WEATHER IS EXPECTED TO UNFOLD
FOR THE MIDDLE OF NEXT WEEK. WHILE SUBSTANTIAL UNCERTAINTY
REMAINS WITH RESPECT TO THE TIMING AND STRENGTH OF THESE
SUBSEQUENT SYSTEMS...PERIODS OF HEAVY RAINFALL AND HIGHER
ELEVATION SNOWFALL ARE LIKELY FROM WEDNESDAY AFTERNOON THROUGH AT
LEAST THE END OF THE NEXT WEEK. REMNANT COLD AIR MAY RESULT IN A
PROLONGED PERIOD OF SNOWFALL IN VALLEY LOCATIONS LATE WEDNESDAY
INTO THURSDAY.
PLEASE MONITOR THE LATEST NATIONAL WEATHER SERVICE FORECAST FOR
UPDATES ON THE CHANGING WEATHER PATTERN AND ASSOCIATED
CONDITIONS.
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