HAZARDOUS WEATHER OUTLOOK
Issue Date: 513 AM PST SUN DEC 06 2009
Expiration: 700 AM PST MON DEC 07 2009

Expires:200912071500;;
FLUS46 KSTO 061312
HWOSTO
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
512 AM PST SUN DEC 6 2009
CAZ013>019-063-064-066>069-071500-
SHASTA LAKE AREA/NORTHERN SHASTA COUNTY-
BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES-
CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE-
EAST FOOTHILLS/NORTH SACRAMENTO VALLEY-
WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA-
512 AM PST SUN DEC 6 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.
.DAY ONE...TODAY
VERY COLD EARLY MORNING TEMPERATURES WILL RESULT IN AREAS OF FROST.
AN APPROACHING WEATHER SYSTEM WILL LIKELY BEGIN TO BRING SNOWFALL TO
THE NORTHERN SIERRA NEVADA AS EARLY AS THIS EVENING.
* WINTER STORM WATCH.........SEE WWUS46 KSTO - WSWSTO FOR DETAILS *
* FROST ADVISORY.............SEE WWUS76 KSTO - NPWSTO FOR DETAILS *
.DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY
POTENTIAL CONTINUES FOR VERY HEAVY SNOWFALL ACCUMULATIONS OVER THE
WEST SLOPES OF THE NORTHERN SIERRA NEVADA AND FOOTHILLS MONDAY.
THERE IS ALSO SOME POTENTIAL FOR ACCUMULATING SNOW ON MONDAY IN THE
SOUTHERN PORTION OF THE SACRAMENTO VALLEY AND NORTHERN SAN JOAQUIN
VALLEY. SNOW LEVELS WILL BE VERY LOW...LESS THAN 1000 FEET.
A MILDER SERIES OF WEATHER SYSTEMS WILL LIKELY IMPACT THE REGION
THURSDAY THROUGH THE EXTENDED PERIOD. PRECIPITATION AMOUNTS ARE
STILL UNCERTAIN AT THIS TIME.
* WINTER STORM WATCH.........SEE WWUS46 KSTO - WSWSTO FOR DETAILS *
* HARD FREEZE WATCH..........SEE WWUS76 KSTO - NPWSTO FOR DETAILS *
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.
THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT
(LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO
$$

SPECIAL WEATHER STATEMENT
Issue Date: 414 AM PST SUN DEC 06 2009
Expiration: 500 PM PST SUN DEC 06 2009

...ACTIVE WEATHER PATTERN LIKELY THROUGH THE UPCOMING WEEK...
A SERIES OF COLD STORM SYSTEMS WILL IMPACT CALIFORNIA AND NEVADA
THROUGH THE UPCOMING WEEK.
THE FIRST SYSTEM WILL BE ACCOMPANIED BY A COLD AIR MASS...BRINGING
SNOW TO EASTERN CALIFORNIA AND WESTERN NEVADA FROM TONIGHT
THROUGH MONDAY. SIGNIFICANT SNOW ACCUMULATIONS ARE POSSIBLE
ACROSS THE EASTERN SIERRA AND PORTIONS OF WESTERN NEVADA WHICH
COULD PRODUCE DIFFICULT DRIVING CONDITIONS FOR THE MONDAY
COMMUTES. A WINTER STORM WATCH HAS BEEN ISSUED FOR PORTIONS OF
EASTERN CALIFORNIA AND WESTERN NEVADA WITH THIS SYSTEM.
A VERY COLD AIR MASS WILL MOVE INTO THE AREA MONDAY INTO TUESDAY
WITH HIGH TEMPERATURES STRUGGLING TO REACH FREEZING EVERYWHERE.
LOW TEMPERATURES TUESDAY AND WEDNESDAY MORNINGS HAVE THE POTENTIAL
TO BE QUITE COLD...TEN DEGREES BELOW ZERO UP TO 15 DEGREES ABOVE
ZERO. THESE WELL BELOW NORMAL TEMPERATURES WILL CONTINUE THROUGH
WEDNESDAY.
A SECOND STORM IS POSSIBLE THURSDAY INTO FRIDAY. THIS SYSTEM WILL BE
SLIGHTLY WARMER THAN THE FIRST. BUT WITH PLENTY OF COLD AIR
TRAPPED IN THE VALLEYS...THE STORM WILL BEGIN AS SNOW...POSSIBLY
CHANGING OVER TO A MIX OF SNOW AND RAIN BELOW 5000 FEET LATE IN
THE EVENT. THERE REMAINS SIGNIFICANT UNCERTAINTY WITH REGARDS TO
PRECIPITATION AMOUNTS WITH THIS SECOND SYSTEM.
LOCAL OFFICIALS...EMERGENCY MANAGERS AND ANYONE WITH TRAVEL PLANS
THIS UPCOMING WEEK SHOULD CONTINUE TO MONITOR THE FORECASTS AND
FURTHER STATEMENTS FOR BOTH THESE STORMS.
$$
HTTP://WEATHER.GOV/RENO

WINTER STORM WARNING
Issue Date: 410 AM PST SUN DEC 06 2009
Expiration: 700 PM PST MON DEC 07 2009

...SNOWFALL EXPECTED THROUGHOUT THE EASTERN SIERRA AND WESTERN
NEVADA TONIGHT THROUGH MONDAY NIGHT...
.A COLD LOW PRESSURE SYSTEM WILL COMBINE WITH PACIFIC MOISTURE TO
GENERATE SNOWFALL ACROSS THE EASTERN SIERRA AND WESTERN NEVADA.
THIS WILL CREATE A SIGNIFICANT IMPACT FOR TRAVEL MONDAY MORNING...
AND POSSIBLY THROUGHOUT THE DAY MONDAY AS THE COLD TEMPERATURES
WILL NOT ALLOW FOR THE SNOW TO MELT. DUE TO THE VERY COLD
TEMPERATURES THIS SNOW WILL ACCUMULATE RATHER RAPIDLY AND COULD
PRODUCE SOME IMPRESSIVE AMOUNTS BY THE TIME THE SNOW ENDS LATE
MONDAY EVENING.
CAZ071-072-NVZ002-070100-
/O.UPG.KREV.WS.A.0005.091207T0600Z-091208T0600Z/
/O.NEW.KREV.WS.W.0007.091207T0300Z-091208T0300Z/
LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE...
SOUTH LAKE TAHOE...TRUCKEE...INCLINE VILLAGE
409 AM PST SUN DEC 6 2009
...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 7 PM
PST MONDAY...
THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A WINTER STORM
WARNING FOR HEAVY SNOW AND GUSTY WINDS...WHICH IS IN EFFECT FROM 7 PM
THIS EVENING TO 7 PM PST MONDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.
* TIMING: LIGHT SNOW WILL BEGIN THIS EVENING BECOMING MODERATE TO
  HEAVY AT TIMES BY MONDAY MORNING. SNOW WILL LAST THROUGH MONDAY
  EVENING.
* TOTAL SNOW ACCUMULATIONS: 10-20 INCHES ABOVE 5000 FEET SOUTH OF
  HIGHWAY 36 INCLUDING THE LAKE TAHOE BASIN. UP TO 30 INCHES ABOVE
  7000 FEET. UP TO 6 INCHES ACROSS NORTHERN AND EASTERN LASSEN
  COUNTY.
* WINDS: 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. RIDGES WILL BE
  GUSTING UP TO 70 MPH.
* IMPACTS: SNOW WILL CREATE SLICK ROADS AND HAZARDOUS DRIVING
  CONDITIONS. VISIBILITY WILL BE REDUCED BELOW A HALF MILE AT
  TIMES DUE TO HEAVY SNOW AND GUSTY WINDS. THIS IS ESPECIALLY TRUE
  ACROSS MOUNTAIN PASSES IN THE HIGH SIERRA.
&&
PRECAUTIONARY/PREPAREDNESS ACTIONS...
CONDITIONS CAN DETERIORATE RAPIDLY DURING WINTER STORMS...SLOW
DOWN AND ALLOW EXTRA TIME WHEN TRAVELING.  CARRY TIRE CHAINS...
FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF
AN EMERGENCY.  CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO
NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION.
&&
$$

WINTER STORM WATCH
Issue Date: 400 AM PST SUN DEC 06 2009
Expiration: 1000 PM PST MON DEC 07 2009

...WINTER STORM EXPECTED TO IMPACT NORTHERN CALIFORNIA SUNDAY
NIGHT AND MONDAY...
.A WEATHER SYSTEM OVER THE PACIFIC NORTHWEST WILL MOVE SOUTHWARD
AND GATHER STRENGTH TODAY BEFORE BRINGING HEAVY SNOW AND GUSTY
WINDS TO THE NORTHERN SIERRA NEVADA AND FOOTHILLS TONIGHT AND
MONDAY. LOW SNOW LEVELS ARE EXPECTED...LOWERING TO BELOW 1000 FEET
MONDAY. THERE IS SOME POTENTIAL FOR ACCUMULATING SNOW IN THE
CENTRAL VALLEY...MAINLY FROM THE SOUTHERN SACRAMENTO VALLEY
SOUTHWARD INTO THE NORTHERN SAN JOAQUIN VALLEY. SNOW IS EXPECTED
TO TAPER OFF FROM THE NORTH BY MONDAY EVENING.
CAZ066>069-070000-
/O.EXT.KSTO.WS.A.0010.091207T0200Z-091208T0600Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
WESTERN PLUMAS COUNTY/LASSEN PARK-
WEST SLOPE NORTHERN SIERRA NEVADA-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY...JACKSON...
CHESTER...QUINCY...BLUE CANYON
400 AM PST SUN DEC 6 2009
...WINTER STORM WATCH NOW IN EFFECT FROM THIS EVENING THROUGH
MONDAY EVENING...
THE WINTER STORM WATCH IS NOW IN EFFECT FROM THIS EVENING THROUGH
MONDAY EVENING FOR THE WEST SLOPES OF THE NORTHERN SIERRA
NEVADA...WESTERN PLUMAS COUNTY AND THE LASSEN PARK AREA...NORTHERN
SIERRA NEVADA FOOTHILLS AND MOTHERLODE.
* TIMING: SNOW IS EXPECTED TO BEGIN THIS EVENING...BECOME HEAVY
OVERNIGHT AND CONTINUE MONDAY BEFORE TAPERING OFF MONDAY
EVENING.
* SNOW LEVEL: AT THE SURFACE.
* MAIN IMPACT: STORM TOTAL SNOWFALL ACCUMULATION OF 6 TO 12 INCHES
WITH LOCALLY HIGHER AMOUNTS WILL BE POSSIBLE IN THE FOOTHILLS
WITH UP TO 2 FEET OR MORE POSSIBLE AT THE HIGHER ELEVATIONS OF
NORTHERN SIERRA.
* OTHER IMPACTS: SOUTHWEST WIND GUSTS OF 40 TO 50 MPH WILL RESULT
IN AREAS OF BLOWING AND DRIFTING SNOW WITH NEAR ZERO VISIBILITY
AT TIMES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.
$$