Winter Storm Warning 1, NWS Sacramento, CA

522 
WWUS46 KSTO 151200
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
400 AM PST TUE FEB 15 2011

...WINTER WEATHER TO IMPACT THE REGION THROUGH MID-WEEK...

.A COLD FRONT WILL SLOWLY APPROACH THE REGION TODAY. GUSTY WINDS
AND A MIXTURE OF RAIN AND HIGH ELEVATION SNOW WILL SPREAD FROM
THE NORTHERN MOUNTAINS TO THE WEST SLOPE OF THE SIERRA LATER TODAY.
COLDER AIR BEHIND THE FRONT WILL BRING MORE WIDESPREAD SNOWFALL
TONIGHT AND WEDNESDAY. OVER FOUR FEET OF NEW SNOW MAY FALL ABOVE
7000 FEET IN THE NORTHERN SIERRA NEVADA BY WEDNESDAY NIGHT. VERY
HEAVY SNOW IS LIKELY OVER THE HIGHER MOUNTAIN PASSES TONIGHT AND
WEDNESDAY. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS WEDNESDAY
NIGHT.

CAZ068-160000-
/O.CON.KSTO.WS.W.0001.110215T1400Z-110217T0200Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITIES OF...CHESTER...QUINCY
400 AM PST TUE FEB 15 2011

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING
TO 6 PM PST WEDNESDAY ABOVE 4000 FEET...

A WINTER STORM WARNING ABOVE 4000 FEET REMAINS IN EFFECT FROM
6 AM THIS MORNING TO 6 PM PST WEDNESDAY FOR WESTERN PLUMAS COUNTY
AND THE LASSEN VOLCANIC NATIONAL PARK.

* SNOW ACCUMULATIONS: 2 TO 4 FEET OF SNOW ABOVE 7000 FEET...WITH 1
  TO 2 FEET ABOVE 5000 FEET BY WEDNESDAY EVENING. SEVERAL INCHES
  OF SNOW MAY FALL AT LOWER ELEVATIONS DURING THE DAY WEDNESDAY.

* ELEVATION: ABOVE 4000 FEET.

* TIMING: SNOW WILL BECOME HEAVY AT TIMES TODAY. SNOW WILL TAPER
  OFF TO SCATTERED SNOW SHOWERS AS SNOW LEVELS LOWER WEDNESDAY
  AFTERNOON AND EVENING.

* LOCATIONS INCLUDE: CHESTER...QUINCY

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 MPH.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...ROAD CLOSURES...HEAVY SNOW
  ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND WILL BE COMBINED WITH STRONG WINDS AND POOR
VISIBILITIES THAT WILL IMPACT TRAVEL. IF YOU MUST TRAVEL... KEEP A
FLASHLIGHT... FOOD... WATER... WARM CLOTHING... AND OTHER SURVIVAL
ITEMS IN YOUR VEHICLE IN CASE YOU GET STUCK. CARRY CHAINS WHEN
TRAVELING THROUGH THE MOUNTAINS AND CONTINUE TO MONITOR THE LATEST
FORECASTS FOR WEATHER UPDATES.

&&

$$

CAZ069-160000-
/O.CON.KSTO.WS.W.0001.110215T2000Z-110217T0200Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
400 AM PST TUE FEB 15 2011

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM
PST WEDNESDAY ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT FROM NOON
TODAY TO 6 PM PST WEDNESDAY FOR THE WEST SLOPES OF THE NORTHERN
SIERRA NEVADA.

* SNOW ACCUMULATIONS: 2 TO 4 FEET OF SNOW ABOVE 7000 FEET...WITH 1
  TO 2 FEET ABOVE 5000 FEET BY WEDNESDAY EVENING. SEVERAL INCHES
  OF SNOW MAY FALL AT LOWER ELEVATIONS DURING THE DAY WEDNESDAY.

* ELEVATION: ABOVE 5000 FEET.

* TIMING: SNOW WILL BECOME HEAVY AT TIMES LATER TODAY AND WILL
  CONTINUE AND CONTINUE INTO WEDNESDAY. VERY HEAVY SNOW AND WHITE-
  OUT CONDITIONS ARE LIKELY OVER THE PASSES TONIGHT AND WEDNESDAY
  MORNING. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS AS SNOW
  LEVELS LOWER WEDNESDAY AFTERNOON AND EVENING.

* LOCATIONS INCLUDE: INTERSTATE 80 OVER DONNER PASS...HIGHWAY 50
  OVER ECHO SUMMIT AND HIGHWAY 88 OVER CARSON PASS.

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS IN EXCESS
  OF 50 MPH. RIDGETOP WINDS COULD GUST UP TO 70 MPH AHEAD OF THE
  COLD FRONT LATER TODAY AND TONIGHT.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...ROAD CLOSURES...HEAVY SNOW
  ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS 
ARE EXPECTED AND WILL BE COMBINED WITH STRONG WINDS AND POOR
VISIBILITIES THAT WILL IMPACT TRAVEL. IF YOU MUST TRAVEL...KEEP A
FLASHLIGHT...FOOD...WATER...WARM CLOTHING...AND OTHER SURVIVAL
ITEMS IN YOUR VEHICLE IN CASE YOU GET STUCK. CARRY CHAINS WHEN
TRAVELING THROUGH THE MOUNTAINS AND CONTINUE TO MONITOR THE LATEST
FORECASTS FOR WEATHER UPDATES.

&&

$$

CAZ013-014-063-160000-
/O.CON.KSTO.WW.Y.0046.000000T0000Z-110216T0500Z/
/O.CON.KSTO.WS.A.0001.110216T0500Z-110217T0200Z/
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
INCLUDING THE CITY OF...ALDER SPRINGS
400 AM PST TUE FEB 15 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING ABOVE 4000 FEET...
...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON ABOVE 3000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT UNTIL
9 PM PST THIS EVENING FOR THE INTERIOR COAST RANGE NORTH OF CLEAR
LAKE...THE MOUNTAINS OF NORTHERN AND EASTERN SHASTA COUNTY AND THE
BURNEY BASIN. A WINTER STORM WATCH ABOVE 3000 FEET REMAINS IN EFFECT
FROM THIS EVENING THROUGH WEDNESDAY AFTERNOON.

* SNOW ACCUMULATIONS: UP TO 2 FEET OF SNOW ABOVE 5000 FEET...WITH
  4 TO 8 INCHES ABOVE 4000 FEET THROUGH WEDNESDAY. SEVERAL INCHES
  OF SNOWFALL ACCUMULATION POSSIBLE IN THE BURNEY BASIN LATE
  TONIGHT AND WEDNESDAY.

* ELEVATION: ABOVE 3000 FEET.

* TIMING: THE WINTER WEATHER ADVISORY IS FOR HIGH ELEVATION SNOW
  AND GUSTY WINDS. SNOW LEVELS WILL LATER TONIGHT AND WEDNESDAY.
  THIS PERIOD IS COVERED BY THE WINTER STORM WATCH.

* LOCATIONS INCLUDE: ALDER SPRINGS...BURNEY

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 MPH
  OVER RIDGES.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...HEAVY SNOW ACCUMULATIONS...
  STRONG WINDS...COLDER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR 
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

CAZ066-067-160000-
/O.CON.KSTO.WS.A.0001.110216T0500Z-110217T0200Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY
400 AM PST TUE FEB 15 2011

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

A WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON FOR THE FOOTHILLS OF THE NORTHERN SIERRA
NEVADA INCLUDING THE MOTHERLODE.

* SNOW ACCUMULATIONS: 5 TO 10 INCHES OF SNOW ABOVE 2500 FEET... 
  WITH SEVERAL INCHES DOWN TO 2000 FEET.

* ELEVATION: RAIN WILL MIX WITH AND CHANGE TO SNOW ABOVE 2500 FEET
  TONIGHT AND WEDNESDAY MORNING. SNOW LEVELS NEAR 1500 FEET ARE
  POSSIBLE WEDNESDAY AFTERNOON. ISOLATED THUNDERSTORMS WITH SMALL
  HAIL ARE ALSO POSSIBLE WEDNESDAY.

* LOCATIONS INCLUDE: GRASS VALLEY...PARADISE

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 MPH.

* IMPACTS: DIFFICULT TRAVEL...SNOW ACCUMULATIONS...STRONG WINDS...
  COLDER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR
THE LATEST FORECASTS.

&&

$$

496 
WWUS46 KSTO 152343
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
343 PM PST TUE FEB 15 2011

...WINTER STORM TO HIT INTERIOR NORTHERN CALIFORNIA MOUNTAINS AND
FOOTHILLS TONIGHT AND WEDNESDAY...

.RAIN AND SNOW WILL SPREAD ACROSS NORTHERN CALIFORNIA WITH A COLD
FRONT TONIGHT AND EARLY WEDNESDAY MORNING. PERIODS OF HEAVY SNOW
AND STRONG...GUSTY WINDS CAN BE EXPECTED OVER THE MOUNTAINS. COLDER
AIR BEHIND THE FRONT WILL LOWER SNOW LEVELS INTO THE FOOTHILLS.
THUNDERSTORMS WITH SMALL HAIL AND SLEET ARE POSSIBLE IN THE
FOOTHILLS WEDNESDAY AFTERNOON. SNOW WILL TAPER OFF TO SCATTERED
SNOW SHOWERS WEDNESDAY NIGHT.

CAZ066-067-161300-
/O.UPG.KSTO.WS.A.0001.110216T0500Z-110217T0200Z/
/O.EXB.KSTO.WS.W.0001.110216T1000Z-110217T0200Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY
343 PM PST TUE FEB 15 2011

...WINTER STORM WARNING IN EFFECT FROM 2 AM TO 6 PM PST
WEDNESDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 2 AM TO 6
PM PST WEDNESDAY FOR THE SIERRA NEVADA FOOTHILLS. THE WINTER
STORM WATCH IS NO LONGER IN EFFECT.

* SNOW ACCUMULATIONS: 5 TO 10 INCHES OF SNOW ABOVE 2500 FEET...
  WITH SEVERAL INCHES DOWN TO AROUND 2000 FEET. SLEET OR SMALL
  HAIL ALSO POSSIBLE DURING THUNDERSTORMS ON WEDNESDAY. 

* ELEVATION: SNOW LEVEL LOWERING TO 2000 TO 2500 FEET. 

* LOCATIONS INCLUDE: GRASS VALLEY...PARADISE...PLACERVILLE. 

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 40 MPH.

* IMPACTS: DIFFICULT TRAVEL...SNOW ACCUMULATIONS...GUSTY WINDS...
  COLDER TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

CAZ013-014-063-161300-
/O.UPG.KSTO.WW.Y.0046.000000T0000Z-110216T0500Z/
/O.UPG.KSTO.WS.A.0001.110216T0500Z-110217T0200Z/
/O.EXA.KSTO.WS.W.0001.000000T0000Z-110217T0200Z/
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
INCLUDING THE CITIES OF...BURNEY...ALDER SPRINGS
343 PM PST TUE FEB 15 2011

...WINTER STORM WARNING IN EFFECT UNTIL 6 PM PST WEDNESDAY...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...AND BLOWING SNOW...WHICH IS IN
EFFECT UNTIL 6 PM PST WEDNESDAY FOR THE COASTAL RANGE AND SHASTA
COUNTY MOUNTAINS. THE WINTER WEATHER ADVISORY IS NO LONGER IN
EFFECT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* SNOW ACCUMULATIONS: 1 TO 2 FEET OF SNOW ABOVE 5000 FEET... WITH
  4 TO 8 INCHES ABOVE 4000 FEET THROUGH WEDNESDAY. SEVERAL INCHES
  OF ACCUMULATION POSSIBLE IN THE BURNEY BASIN LATE TONIGHT AND
  WEDNESDAY...AND ON INTERSTATE 5 NORTH OF REDDING LATE TONIGHT
  AND WEDNESDAY.

* LOCATIONS INCLUDE: ALDER SPRINGS...BURNEY...INTERSTATE 5 NORTH
  OF REDDING. 

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 
  MPH OVER RIDGES. 

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...HEAVY SNOW ACCUMULATIONS...
  STRONG WINDS...COLD TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

CAZ068-069-161300-
/O.CON.KSTO.WS.W.0001.000000T0000Z-110217T0200Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
WEST SLOPE NORTHERN SIERRA NEVADA-
INCLUDING THE CITIES OF...CHESTER...QUINCY
343 PM PST TUE FEB 15 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST
WEDNESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST
WEDNESDAY FOR THE SIERRA NEVADA AND WESTERN PLUMAS COUNTY. 

* SNOW ACCUMULATIONS: TWO TO FOUR FEET OF SNOW ABOVE 7000
  FEET...AND 1 TO 2 FEET ABOVE 5000 FEET BY WEDNESDAY EVENING.
  SEVERAL INCHES OF SNOW MAY FALL AT LOWER ELEVATIONS DURING THE
  DAY WEDNESDAY.

* TIMING: SNOW WILL SPREAD FROM WESTERN PLUMAS COUNTY SOUTHWARD
  INTO THE INTERSTATE 80 AND HIGHWAY 50 CORRIDOR THIS EVENING AND
  CONTINUE ON WEDNESDAY. PERIODS OF HEAVY SNOW AND STRONG...GUSTY
  WINDS WILL CAUSE WHITEOUT CONDITIONS. SNOW WILL TAPER OFF TO
  SCATTERED SNOW SHOWERS AS SNOW LEVELS LOWER WEDNESDAY AFTERNOON
  AND EVENING.

* LOCATIONS INCLUDE: CHESTER...QUINCY...INTERSTATE 80 AND HIGHWAY
  50 PASSES. 

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 TO 60 MPH.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...ROAD CLOSURES...HEAVY 
  SNOW ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND WILL BE COMBINED WITH STRONG WINDS AND POOR
VISIBILITIES THAT WILL IMPACT TRAVEL. IF YOU MUST TRAVEL... KEEP
A FLASHLIGHT... FOOD... WATER... WARM CLOTHING... AND OTHER
SURVIVAL ITEMS IN YOUR VEHICLE IN CASE YOU GET STUCK. CARRY
CHAINS WHEN TRAVELING THROUGH THE MOUNTAINS AND CONTINUE TO
MONITOR THE LATEST FORECASTS FOR WEATHER UPDATES.

&&

$$

JHM

839 
WWUS46 KSTO 161145
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
345 AM PST WED FEB 16 2011

CAZ013-014-063-170000-
/O.CAN.KSTO.WS.W.0001.000000T0000Z-110217T0200Z/
/O.NEW.KSTO.WW.Y.0047.110216T1145Z-110217T0200Z/
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
INCLUDING THE CITIES OF...BURNEY...ALDER SPRINGS
345 AM PST WED FEB 16 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM PST THIS EVENING
ABOVE 3000 FEET...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY ABOVE 3000 FEET FOR SNOW...WHICH IS IN EFFECT
UNTIL 6 PM PST THIS EVENING FOR THE INTERIOR COAST RANGE NORTH OF
CLEAR LAKE...THE MOUNTAINS OF NORTHERN AND EASTERN SHASTA COUNTY
AND THE BURNEY BASIN. THE WINTER STORM WARNING HAS BEEN CANCELED.

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS OF 3 TO 6 INCHES AT
  THE HIGHER ELEVATIONS WITH 1 TO 3 INCHES AT THE LOWER
  ELEVATIONS.

* LOCATIONS INCLUDE: ALDER SPRINGS...BURNEY

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH.

* IMPACTS: DIFFICULT MOUNTAIN TRAVEL...HEAVY SNOW ACCUMULATIONS...
  STRONG WINDS...COLD TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

CAZ069-170000-
/O.NEW.KSTO.WS.A.0002.110218T0000Z-110219T0600Z/
/O.EXT.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
345 AM PST WED FEB 16 2011

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST THURSDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY EVENING ABOVE 3500 FEET...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WATCH ABOVE 3500 FEET...WHICH IS IN EFFECT FROM THURSDAY
AFTERNOON THROUGH FRIDAY EVENING FOR THE WEST SLOPES OF THE
NORTHERN SIERRA NEVADA. THE WINTER STORM WARNING IS NOW IN EFFECT
UNTIL 4 AM PST THURSDAY.

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS UP TO TWO FEET
  ABOVE 5000 FEET. SEVERAL INCHES OF SNOW MAY FALL AT LOWER
  ELEVATIONS.

* TIMING: SNOW WILL CONTINUE HEAVY AT TIMES TODAY BEFORE SHOWERS
  TAPER OFF LATE TONIGHT.

* LOCATIONS INCLUDE: INTERSTATE 80 OVER DONNER PASS AND HIGHWAY 50
  OVER ECHO SUMMIT.

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 MPH.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...ROAD CLOSURES...HEAVY SNOW
  ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES.

ANOTHER ROUND OF HEAVY SNOW WILL BE POSSIBLE IN THE NORTHERN
SIERRA NEVADA THURSDAY NIGHT AND FRIDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND WILL BE COMBINED WITH STRONG WINDS AND POOR
VISIBILITIES THAT WILL IMPACT TRAVEL. IF YOU MUST TRAVEL...KEEP A
FLASHLIGHT...FOOD...WATER...WARM CLOTHING.. AND OTHER SURVIVAL
ITEMS IN YOUR VEHICLE IN CASE YOU GET STUCK. CARRY CHAINS WHEN
TRAVELING THROUGH THE MOUNTAINS AND CONTINUE TO MONITOR THE LATEST
FORECASTS FOR WEATHER UPDATES.

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.

&&

$$

CAZ066>068-170000-
/O.EXT.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY...CHESTER...
QUINCY
345 AM PST WED FEB 16 2011

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST THURSDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 4 AM PST THURSDAY
FOR THE FOOTHILLS OF THE NORTHERN SIERRA NEVADA INCLUDING THE
MOTHERLODE...WESTERN PLUMAS COUNTY AND THE LASSEN VOLCANIC
NATIONAL PARK.

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS UP TO TWO FEET OF
  SNOW ABOVE 7000 FEET...AND 1 FOOT ABOVE 5000 FEET BY THURSDAY
  MORNING. 4 TO 8 INCHES OF SNOW MAY ACCUMULATE DOWN TO AROUND THE
  2500 TO 3000 FOOT LEVEL IN THE FOOTHILLS BY EARLY THURSDAY.

* TIMING: PERIODS OF SHOWERS WITH LOWERING SNOW LEVELS THROUGH
  TONIGHT.

* LOCATIONS INCLUDE: CHESTER...QUINCY...GRASS VALLEY...PARADISE

* WINDS: SOUTHWEST WINDS 15 TO 25 MPH WITH LOCAL GUSTS TO 40 AT
  THE HIGHER ELEVATIONS THIS MORNING.

* IMPACTS: DIFFICULT MOUNTAIN AND FOOTHILL TRAVEL...ROAD CLOSURES...
  HEAVY SNOW ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND COMBINED WITH STRONG WINDS AND POOR VISIBILITIES
WILL IMPACT TRAVEL. IF YOU MUST TRAVEL...KEEP A FLASHLIGHT...FOOD...
WATER...WARM CLOTHING...AND OTHER SURVIVAL ITEMS IN YOUR VEHICLE IN
CASE YOU GET STUCK. CARRY CHAINS WHEN TRAVELING THROUGH THE 
MOUNTAINS AND CONTINUE TO MONITOR THE LATEST FORECASTS FOR WEATHER
UPDATES.

&&

$$

297 
WWUS46 KSTO 162348
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
348 PM PST WED FEB 16 2011

CAZ069-170200-
/O.CON.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
/O.CON.KSTO.WS.A.0002.110218T0000Z-110219T0600Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
348 PM PST WED FEB 16 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY EVENING ABOVE 3500 FEET...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY.
A WINTER STORM WATCH ABOVE 3500 FEET REMAINS IN EFFECT FROM
THURSDAY AFTERNOON THROUGH FRIDAY EVENING. 

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS UP TO TWO FEET 
  ABOVE 5000 FEET. SEVERAL INCHES OF SNOW MAY FALL AT LOWER 
  ELEVATIONS.

* TIMING: SNOW WILL CONTINUE HEAVY AT TIMES TODAY BEFORE 
  SHOWERS TAPER OFF LATE TONIGHT. 

* LOCATIONS INCLUDE: INTERSTATE 80 OVER DONNER PASS AND HIGHWAY 50
  OVER ECHO SUMMIT.

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 
  MPH.

* IMPACTS: DANGEROUS MOUNTAIN TRAVEL...ROAD CLOSURES...HEAVY 
  SNOW ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES. 

ANOTHER ROUND OF HEAVY SNOW WILL BE POSSIBLE IN THE NORTHERN
SIERRA NEVADA THURSDAY NIGHT AND FRIDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND WILL BE COMBINED WITH STRONG WINDS AND POOR
VISIBILITIES THAT WILL IMPACT TRAVEL. IF YOU MUST TRAVEL...KEEP A
FLASHLIGHT...FOOD...WATER...WARM CLOTHING.. AND OTHER SURVIVAL
ITEMS IN YOUR VEHICLE IN CASE YOU GET STUCK. CARRY CHAINS WHEN
TRAVELING THROUGH THE MOUNTAINS AND CONTINUE TO MONITOR THE
LATEST FORECASTS FOR WEATHER UPDATES.

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.

&&

$$

CAZ066>068-170200-
/O.CON.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY...CHESTER...
QUINCY
348 PM PST WED FEB 16 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY.

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS UP TO TWO FEET 
  OF SNOW ABOVE 7000 FEET...AND 1 FOOT ABOVE 5000 FEET BY 
  THURSDAY MORNING. 4 TO 8 INCHES OF SNOW MAY ACCUMULATE DOWN 
  TO AROUND THE 2500 TO 3000 FOOT LEVEL IN THE FOOTHILLS BY 
  EARLY THURSDAY. 

* TIMING: PERIODS OF SHOWERS WITH LOWERING SNOW LEVELS THROUGH 
  TONIGHT.

* LOCATIONS INCLUDE: CHESTER...QUINCY...GRASS VALLEY...PARADISE

* WINDS: SOUTHWEST WINDS 15 TO 25 MPH WITH LOCAL GUSTS TO 40 AT 
  THE HIGHER ELEVATIONS THIS MORNING.

* IMPACTS: DIFFICULT MOUNTAIN AND FOOTHILL TRAVEL...ROAD
  CLOSURES... HEAVY SNOW ACCUMULATIONS...STRONG WINDS...COLD 
  TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT SIGNIFICANT SNOW ACCUMULATIONS
ARE EXPECTED AND COMBINED WITH STRONG WINDS AND POOR VISIBILITIES
WILL IMPACT TRAVEL. IF YOU MUST TRAVEL...KEEP A FLASHLIGHT...
FOOD... WATER...WARM CLOTHING...AND OTHER SURVIVAL ITEMS IN YOUR
VEHICLE IN CASE YOU GET STUCK. CARRY CHAINS WHEN TRAVELING
THROUGH THE MOUNTAINS AND CONTINUE TO MONITOR THE LATEST
FORECASTS FOR WEATHER UPDATES.

&&

$$

CAZ013-014-063-170200-
/O.CON.KSTO.WW.Y.0047.000000T0000Z-110217T0200Z/
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
INCLUDING THE CITY OF...ALDER SPRINGS
348 PM PST WED FEB 16 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING ABOVE 3000 FEET...

A WINTER WEATHER ADVISORY ABOVE 3000 FEET REMAINS IN EFFECT UNTIL
6 PM PST THIS EVENING. 

* SNOW ACCUMULATIONS: ADDITIONAL ACCUMULATIONS OF 3 TO 6 INCHES
  AT THE HIGHER ELEVATIONS WITH 1 TO 3 INCHES AT THE LOWER 
  ELEVATIONS.

* LOCATIONS INCLUDE: ALDER SPRINGS

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH.

* IMPACTS: DIFFICULT MOUNTAIN TRAVEL...HEAVY SNOW 
  ACCUMULATIONS...STRONG WINDS...COLD TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

488 
WWUS46 KSTO 170135
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
535 PM PST WED FEB 16 2011

CAZ068-170600-
/O.CAN.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
/O.NEW.KSTO.WW.Y.0048.110217T0135Z-110217T1200Z/
/O.EXA.KSTO.WS.A.0002.110218T0000Z-110219T0600Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITIES OF...CHESTER...QUINCY
535 PM PST WED FEB 16 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST THURSDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW SHOWERS AND SLICK ROADS...IN EFFECT
UNTIL 4 AM PST THURSDAY.  

A WINTER STORM WATCH HAS ALSO BEEN ISSUED. THIS WINTER STORM
WATCH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY EVENING.


* SNOW ACCUMULATIONS: LIGHT ACCUMULATIONS OF 1 TO 3 INCHES IN SNOW
  SHOWERS THIS EVENING. THERE WILL BE A BREAK TONIGHT AND THURSDAY
  MORNING BEFORE HEAVY SNOW REDEVELOPS THURSDAY AFTERNOON. 

* TIMING: SNOW SHOWERS WILL BE MOSTLY LIGHT TONIGHT. SLICK ROADS
  AND OCCASIONAL SNOW SHOWERS WILL CONTINUE. THERE MAY BE A BREAK
  IN THE SNOW OVERNIGHT. HEAVY SNOW WILL REDEVELOP THURSDAY
  AFTERNOON...AND CONTINUE INTO FRIDAY EVENING. 

* LOCATIONS INCLUDE: CHESTER...QUINCY. HIGHER MOUNTAIN PASSES SUCH
  AS YUBA PASS. THE LASSEN PARK AREA.  

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 
  MPH OVER RIDGES.

* IMPACTS: SLICK ROADS...BUT IMPROVING CONDITIONS OVERNIGHT. HEAVY
  SNOW WILL RE-DEVELOP THURSDAY AFTERNOON WITH STRONG
  WINDS...DANGEROUS BACK COUNTRY TRAVELING CONDITIONS AND GENERAL
  TRAVEL DELAYS.  

&&

$$

CAZ069-170600-
/O.CAN.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
/O.NEW.KSTO.WW.Y.0048.110217T0135Z-110217T1200Z/
/O.CON.KSTO.WS.A.0002.110218T0000Z-110219T0600Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
535 PM PST WED FEB 16 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST THURSDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW SHOWERS AND SLICK ROADS...WHICH IS IN
EFFECT UNTIL 4 AM PST THURSDAY. 

A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY EVENING.

* SNOW ACCUMULATIONS: LIGHT SNOW ACCUMULATIONS OF 1 TO 3 INCHES OF
  SNOW OVERNIGHT. THERE MAY BE A BREAK OVERNIGHT. HEAVY SNOW WILL
  START AGAIN THURSDAY AFTERNOON...AND LAST THROUGH FRIDAY
  EVENING. 

* TIMING: SNOW SHOWERS WILL BE MOSTLY LIGHT TONIGHT. SLICK ROADS
  AND OCCASIONAL SNOW SHOWERS WILL CONTINUE. THERE MAY BE A BREAK
  IN THE SNOW OVERNIGHT. HEAVY SNOW WILL REDEVELOP THURSDAY
  AFTERNOON...AND CONTINUE INTO FRIDAY EVENING. 

* LOCATIONS INCLUDE: ALL ELEVATIONS ARE SUBJECT TO SLICK ROADS AND
  HAZARDOUS TRAVEL TONIGHT; ESPECIALLY OVER MOUNTAIN RIDGES. 

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 
  MPH OVER THE RIDGES.

* IMPACTS: SLICK ROADS...BUT IMPROVING CONDITIONS OVERNIGHT. HEAVY
  SNOW WILL RE-DEVELOP THURSDAY AFTERNOON WITH STRONG
  WINDS...DANGEROUS BACK COUNTRY TRAVELING CONDITIONS AND GENERAL
  TRAVEL DELAYS.  

&&

$$

CAZ066-067-170600-
/O.CAN.KSTO.WS.W.0001.000000T0000Z-110217T1200Z/
/O.EXA.KSTO.WS.A.0002.110218T0000Z-110219T0600Z/
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
INCLUDING THE CITIES OF...PARADISE...GRASS VALLEY
535 PM PST WED FEB 16 2011

...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY EVENING ABOVE 2000 FEET...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WATCH ABOVE 2000 FEET...WHICH IS IN EFFECT FROM THURSDAY
AFTERNOON THROUGH FRIDAY EVENING. THE CURRENT WINTER STORM
WARNING HAS BEEN CANCELED.

* SNOW ACCUMULATIONS: LITTLE OR NO ADDITIONAL SNOWFALL IS EXPECTED
  TONIGHT. MODERATE TO HEAVY SNOW WILL REDEVELOP THURSDAY
  AFTERNOON AND CONTINUE INTO FRIDAY AFTERNOON. 

* TIMING: LIGHT SNOW SHOWERS WILL END THIS EVENING. MODERATE TO
  HEAVY SNOW WILL REDEVELOP THURSDAY AFTERNOON...AND CONTINUE INTO
  FRIDAY EVENING.

* LOCATIONS INCLUDE: PARADISE...GRASS VALLEY...NEVADA CITY...THE
  UPPER ELEVATIONS OF PARADISE. INTERSTATE 80 ABOVE COLFAX.
  HIGHWAY 50 ABOVE PLACERVILLE. 

* WINDS: SOUTHWEST WINDS 20 TO 30 MPH WITH LOCAL GUSTS TO 50 
  MPH.

* IMPACTS: LOW ELEVATION SNOW REDEVELOPING THURSDAY AFTERNOON.
  HAZARDOUS TRAVEL...GUSTY WINDS AND COLD TEMPERATURES. DANGEROUS
  BACK COUNTRY TRAVELING CONDITIONS.

&&


$$

CAZ013-014-063-170245-
/O.CAN.KSTO.WW.Y.0047.000000T0000Z-110217T0200Z/
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
INCLUDING THE CITY OF...ALDER SPRINGS
535 PM PST WED FEB 16 2011

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELED THE
WINTER WEATHER ADVISORY. 

SCATTERED SNOW SHOWERS ARE STILL POSSIBLE THIS EVENING. 

$$

SG

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
330 PM PST MON FEB 14 2011

.DISCUSSION...
THE INITIAL FRONTAL BAND AND UPPER LEVEL SUPPORT HAS MOVED ACROSS
NORCAL AND...AS EXPECTED...WE ARE SEEING A LULL OR BREAK IN THE
PRECIP. THE UPSLOPE FLOW HOWEVER WILL KEEP SOME LIGHT SHOWERS GOING
MAINLY IN THE NRN AND NERN MTN ZONES AHEAD OF THE NEXT WX SYSTEM.
THE WINDS ARE STILL BLOWING IN THE VALLEY AS THE MFR-SAC GRADIENT
HAS INCREASED TO 15 MBS...STRONGER THAN FORECAST. THE LAMP GUIDANCE
HAS INDICATED THE WINDS MAY LAST UNTIL 02Z-03Z OR SO...SO WE HAVE
EXTENDED THE WIND ADVSRY INTO THE EVENING FOR A COUPLE OF HRS.

IR IMAGERY SHOWS A MASSIVE AREA OF OPEN CELLULAR CUMULUS OVER THE
NERN PAC...AND THIS COLD AND UNSTABLE AIR MASS WILL BE MOVING TOWARD
THE COAST ON TUE AND INLAND ON WED. PRECIP IS EXPECTED TO INCREASE
OVER THE NRN ZONES AFTER MIDNIGHT AHEAD OF A SHORT WAVE BACK NEAR
40N/140W WHICH WILL APPROACH THE N COAST BY TUE MORNING. ALREADY THE
SHORT WAVE JUST OFF THE ORE COAST AND THE LEADING EDGE OF THIS
COLDER AIR IS INTERACTING WITH FRONT #2 JUST OFFSHORE...AND THIS
FRONT IS PROGGED TO MOVE ONTO THE COAST AS THE SHORT WAVE NEAR
40N/140W APPROACHES THE COAST. SO WE LOOK FOR AN INCREASE IN BOTH
RAIN AND WIND BY TUE MORNING OVER INTERIOR NORCAL.

FROM 12Z-18Z TUE...THE 925 MBS WINDS ARE FORECAST TO INCREASE TO
50-55 KTS IN THE NRN SAC VLY AHEAD OF FRONT #2...WITH THE NEXT ROUND
OF WIND AND RAIN. PRESSURE GRADIENTS ARE FORECAST TO REACH ABOUT
12-14 MBS FROM MFR-SAC ON TUE (COMPARABLE TO TODAY) RESULTING IN
WINDY CONDITIONS IN THE VALLEY AND MTNS. THUS...WE ARE FAIRLY
CONFIDENT THAT ANOTHER WIND ADVISORY WILL BE NEEDED FOR THE VALLEY
AGAIN ON TUE.

SUCCESSIVE SHORT WAVES WILL BE MOVING THROUGH THE DEEPENING LONGER
WAVE TROF THROUGH WED GIVING NORCAL ADDITIONAL BURSTS OF PRECIP TUE
NITE AND WED. A DOUBLE JET STRUCTURE...DIRECT CIRCULATION ACROSS THE
ORE BORDER AND INDIRECT CIRCULATION ACROSS CENTRAL CA...IS STILL
FORECAST TO AFFECT NORCAL FROM TUE AFTERNOON INTO WED MORNING. THIS
WILL ENHANCE UPWARD MOTION OVER OUR AREA...RESULTING IN INCREASING
PRECIP AND WIND FOR OUR FORECAST AREA. WHILE QPFS FROM THE FIRST
SYSTEM TODAY ARE GENERALLY UP TO A FEW TENTHS OF AN INCH...QPFS IN
EXCESS OF AN INCH IN THE VALLEY AND WIDESPREAD 2 TO 4 INCHES WITH
LOCALLY HIGHER AMOUNTS ARE POSSIBLE IN THE MTNS WITH THIS
SECOND...STRONGER AND LONGER DURATION STORM TUE AND WED.

BY WED AFTERNOON...THE COLD UPPER TROF WILL MOVE INLAND AND THE AIR
MASS WILL DESTABILIZE DURING THE AFTERNOON. NORCAL WILL BE ON THE
COLD SIDE OF A STRONG CYCLONIC JET...AND CAPES ARE FORECAST TO
INCREASE TO SEVERAL HUNDRED J/KG IN THE VALLEY...SIGNIFICANT FOR
NORCAL STANDARDS. LOW-TOPPED CBS ARE POSSIBLE...WHICH TEND TO
PRODUCE SMALL HAIL IN THE VALLEY AND FOOTHILLS...AND ICE PELLET OR
SLEET SHOWERS IN THE FOOTHILLS. SNOW LEVELS SHOULD ALSO LOWER INTO
THE FOOTHILLS AS WELL...IT COULD GET VERY MESSY.

MOSTLY CLOUDY SKIES...COLD TEMPERATURES AND LINGERING SHOWERS ARE
EXPECTED ON THU AS A BROAD UPPER TROF REMAINS OVER NORCAL. THEN THE
MEDIUM RANGE MODELS REFORM A CLOSED LOW OFF THE COAST WHICH WILL
AFFECT NORCAL WX DURING THE EXTENDED FORECAST PERIOD.     JHM

.EXTENDED DISCUSSION (FRIDAY THROUGH MONDAY)...
MODELS ARE UNUSUALLY DIVERGENT WITH EACH OTHER FOR FRIDAY...WITH
HIGH UNCERTAINTY FOR CHANCES OF PRECIPITATION. THE LATEST RUNS OF
THE GFS HAVE THE UPPER LOW WELL OFF THE COAST...WHILE THE ECMWF HAS
A SHORTWAVE ELONGATING THE UPPER LOW OVER NORTHERN CALIFORNIA. THE
GFS WOULD KEEP THINGS RELATIVELY DRY FOR MUCH OF THE FORECAST AREA
WITH SOME UPPER LEVEL RIDGING. THIS WOULD BRING JUST A SLIGHT CHANCE
OF PRECIPITATION OVER THE NORTHERN MOUNTAINS. THE ECMWF...ON THE
OTHER HAND...WOULD BRING SIGNIFICANT RAIN AND SNOW AS WELL AS COOLER
TEMPERATURES. WILL LEAN MORE TOWARDS THE ECMWF FOR NOW...WITH
CHANCES OF RAIN SHOWERS ACROSS THE CWA. SATURDAY IS ACTUALLY A
LITTLE MORE CLEAR WITH GFS...ECMWF...GEM...AND UKMET SHOWING THE
UPPER LEVEL LOW OVER CENTRAL CALIFORNIA. WILL GO WITH MORE SHOWER
ACTIVITY AS THIS SYSTEM PASSES THROUGH. SUNDAY LOOKS DRIER...BUT
WILL KEEP A SLIGHT CHANCES OF SOME SHOWERS. ADDITIONAL SHORTWAVE
ENERGY DROPS SOUTHWARD FROM THE GULF OF ALASKA ON MONDAY. THIS
SHOULD REINFORCE THE TROUGH PATTERN AND KEEP CONDITIONS COOL AND
UNSETTLED. EK

&&

.AVIATION...
FNTL SYS APCHS INTR NORCAL...MOVG INLD OVR FCST AREA TUE INTO WED.
FOR INTR NORCAL...AREAS MVFR/IFR CONDS IN SHWRS OVNGT WITH ISOLD
LIFR IN MTNS...BCMG WDSPRD MVFR/IFR WITH AREAS LIFR CONDS TUE/TUE
NGT. STG SWLY FLOW ALF. IN CNTRL VLY...AREAS SLY SFC WND GSTS 25 TO
35 KTS...BCMG LCL TO 25 KTS AFT 02Z. IN MTNS...AREAS S-SW SFC WND
GSTS 35 TO 45 KTS TNGT AND TUE.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM TUESDAY MORNING THROUGH WEDNESDAY AFTERNOON
ABOVE 4000 FEET FOR THE WESTERN PLUMAS COUNTY/LASSEN PARK.

WINTER STORM WATCH FROM TUESDAY AFTERNOON THROUGH WEDNESDAY
AFTERNOON ABOVE 4000 FEET FOR THE WEST SLOPE NORTHERN SIERRA
NEVADA.

WINTER WEATHER ADVISORY FROM 6 AM TO 6 PM PST TUESDAY MOUNTAINS
SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY.

WIND ADVISORY FROM 6 AM TO 6 PM PST TUESDAY CENTRAL SACRAMENTO
VALLEY...NORTHEAST FOOTHILLS/SACRAMENTO VALLEY...NORTHERN
SACRAMENTO VALLEY.

WIND ADVISORY FROM 10 AM TO 6 PM PST TUESDAY CARQUINEZ STRAIT
AND DELTA...SOUTHERN SACRAMENTO VALLEY.

WIND ADVISORY UNTIL 7 PM PST THIS EVENING CENTRAL SACRAMENTO
VALLEY...NORTHERN SACRAMENTO VALLEY.

WINTER STORM WATCH FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT ABOVE 3000 FEET FOR THE BURNEY BASIN / EASTERN SHASTA
COUNTY...SHASTA LAKE AREA / NORTHERN SHASTA COUNTY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
415 AM PST MON FEB 14 2011

CAZ013>019-063-064-066>069-151500-
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-
415 AM PST MON FEB 14 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

A FAST MOVING WEATHER SYSTEM WILL MOVE THROUGH THE REGION TODAY
BRINGING VALLEY RAIN AND SNOW TO THE HIGHER ELEVATIONS...OTHERWISE
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

A SERIES OF WINTER STORMS WILL IMPACT INTERIOR NORTHERN CALIFORNIA
THIS WEEK. HEAVIEST PRECIPITATION AND STRONGEST WINDS ARE EXPECTED
TUESDAY AND WEDNESDAY.

* WINTER STORM WATCH.........SEE WWUS46 KSTO - WSWSTO 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