HAZARDOUS WEATHER OUTLOOK
Issue Date: 330 PM PST FRI DEC 4 2009
Expiration: 330 PM PST SAT DEC 05 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.
.DAY ONE...FRIDAY AFTERNOON AND FRIDAY NIGHT
NO HAZARDOUS WEATHER IS EXPECTED TONIGHT. PARTLY CLOUDY SKIES AND
LOW TEMPERATURES IN THE MID 30S TO MID 40S ARE EXPECTED OVERNIGHT.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
A SIGNIFICANT WEATHER PATTERN CHANGE WILL DEVELOP EARLY NEXT WEEK. A
SPECIAL WEATHER STATEMENT HAS BEEN ISSUED TO HIGHLIGHT THIS UPCOMING
PATTERN CHANGE. PLEASE SEE
*** SFOSPSMTR OR WWUS86 KMTR *** FOR ADDITIONAL DETAILS.
THE INITIAL WEATHER SYSTEM WILL BRING COOL AND WET WEATHER TO OUR
REGION FROM LATE SUNDAY EVENING INTO EARLY NEXT WEEK. SNOW LEVELS
WILL DROP TO AS LOW AS 1000 FEET IN THE NORTH BAY...2000 FEET ACROSS
THE HEART OF THE BAY AREA...AND 2500 FEET SOUTH OF SAN JOSE. AT THIS
TIME IT APPEARS THAT PRECIPITATION AMOUNTS WITH THIS FIRST SYSTEM WILL
BE MODERATE. HOWEVER...A WEATHER SYSTEM ARRIVING MIDWEEK HAS A GOOD
CHANCE OF BRINGING PERIODS OF HEAVY RAIN TO OUR REGION WEDNESDAY AND
THURSDAY.
THIS HAZARDOUS WEATHER OUTLOOK IS MEANT TO ACT AS A PRELIMINARY
NOTICE FOR EMERGENCY MANAGERS AND THE GENERAL PUBLIC TO CONSIDER
TAKING ACTIONS TO PROTECT LIFE AND PROPERTY SHOULD INCLEMENT WEATHER
DEVELOP AS EXPECTED.
MORE RAIN...STRONG WINDS AND BUILDING SEAS ARE EXPECTED BEYOND THIS
OUTLOOK PERIOD...AT LEAST THROUGH THE END OF NEXT WEEK AND
POSSIBLY INTO THE WEEKEND OF DECEMBER 12TH. STAY ABREAST OF THE
LATEST FORECASTS AND WEATHER BULLETINS REGARDING THIS EXPECTED
SIGNIFICANT WEATHER CHANGE.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT
Issue Date: 247 PM PST FRI DEC 4 2009
Expiration: 500 AM PST SAT DEC 05 2009
...COLD SHOWERY WEATHER EXPECTED SUNDAY NIGHT AND MONDAY WITH LOW
SNOW LEVELS...
...WET AND WARMER WEATHER EXPECTED THE MIDDLE AND END OF NEXT WEEK...
A STRONG COLD FRONT WILL DROP SOUTH OUT OF CANADA BY THE END OF THE
WEEKEND. THIS COLD FRONT WILL BRING SHOWERS TO THE SAN FRANCISCO
AND MONTEREY BAY AREAS SUNDAY NIGHT AND MONDAY. A MUCH COLDER
AIRMASS WILL ACCOMPANY THE COLD FRONT DROPPING SNOW LEVELS...DOWN
TO AS LOW AS 1000 FEET IN THE NORTH BAY...2000 FEET ACROSS THE
HEART OF THE BAY AREA...AND 2500 FEET SOUTH OF SAN JOSE. IT IS
STILL TOO EARLY TO DETERMINE HOW MUCH SNOW WILL FALL IN THE
HILLS...OR WHAT ROADS WILL BE IMPACTED. BY TUESDAY MILDER AIR
FROM THE WEST AND SOUTHWEST WILL LIFT FREEZING LEVELS.
A STRONGER STORM WILL ARRIVE WEDNESDAY WITH THE POSSIBILITY OF HEAVY
RAIN AND GUSTY WINDS. STORMY WEATHER CONDITIONS COULD LAST INTO
THURSDAY.
ADDITIONALLY EXPECT LARGE WAVES NEAR THE COAST WEDNESDAY NIGHT AND
THURSDAY.
POTENTIAL IMPACTS FROM THESE STORMS INCLUDE:
* URBAN AND SMALL STREAM FLOODING ALONG WITH POSSIBLE FLASH
FLOODING.
* HIGH WINDS THAT CAN DOWN TREES AND POWER LINES PRODUCING POWER OUTAGES.
* HAZARDOUS DRIVING CONDITIONS DUE TO VERY SLIPPERY ROAD CONDITIONS.
* DANGEROUS NEAR SHORE CONDITIONS DUE TO HIGH SURF FROM LARGE WAVES.
THIS IS A POTENTIALLY SERIOUS DEVELOPING WEATHER SITUATION. PLEASE
LISTEN TO NOAA WEATHER RADIO OR VISIT OUR WEBSITE AT:
HTTP://WEATHER.GOV/SANFRANCISCO FOR THE LATEST WEATHER UPDATES ON
THIS STORM SYSTEM.
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