Alert archive / California / Winter Storm Warnings in 2010

Winter Storm Warning 21, NWS Sacramento, CA

December 27, 2010

NWS Sacramento, CA issued this winter storm warning at Dec 27, 2010, 3:01 PM PST. It took effect at Dec 28, 2010, 2:00 PM PST. It was in force for 26 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 27, 2010, 3:01 PM PST (23:01 UTC)
In effect from
Dec 28, 2010, 2:00 PM PST
Expired
Dec 29, 2010, 4:00 PM PST
In force
26 hr
Issued by
NWS Sacramento, CA

The text

As transmitted, in the capitals the NWS used until 2016.

456 
WWUS46 KSTO 272301
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
301 PM PST MON DEC 27 2010

...MORE HEAVY SNOW ON THE WAY FOR THE MOUNTAINS...

.A STRONG POLAR JET STREAM WILL DRIVE ANOTHER LOW PRESSURE SYSTEM
INTO NORTHERN CALIFORNIA TOMORROW NIGHT AND WEDNESDAY. SCATTERED
SNOW SHOWERS WILL RETURN LATER TONIGHT OVER THE NORTHERN MOUNTAINS
AND SNOW WILL BECOME STEADY IN THE MORNING OVER THE NORTHERN
MOUNTAINS AND BY LATE AFTERNOON FOR THE WESTERN SLOPES OF THE
NORTHERN SIERRA NEVADA.

SNOW LEVELS WILL BEGIN NEAR 4000 FEET OVER THE NORTHERN MOUNTAINS
TO NEAR 5000 FEET IN THE LASSEN PARK AREA AND NEAR 6000 FEET FOR THE
NORTHERN SIERRA NEVADA. THEY WILL FALL TO NEAR 4000 FEET TOMORROW
NIGHT NEAR LASSEN PARK AND 5000 FEET FOR THE NORTHERN SIERRA
NEVADA. SNOW LEVELS WILL LOWER DURING THE DAY ON WEDNESDAY TO NEAR
1000 FEET OVER SHASTA COUNTY TO NEAR 2500 FEET FOR THE MOTHERLODE
BUT NOT MUCH ACCUMULATION IS EXPECTED AT THOSE LOWER LEVELS. 

SOUTHWEST WIND GUSTS TO 60 MPH OVER HIGHER MOUNTAIN PASSES MAY
CREATE WHITE-OUT CONDITIONS AT TIMES IN BLOWING SNOW... ESPECIALLY
TOMORROW NIGHT INTO WEDNESDAY MORNING. SNOW WILL TAPER OFF TO
SCATTERED SNOW SHOWERS DURING THE DAY ON WEDNESDAY. ICY ROADWAYS
ARE LIKELY TO PERSIST INTO WEDNESDAY EVENING AND WEDNESDAY NIGHT.

IF YOU PLAN TO TRAVEL IN THE MOUNTAINS TOMORROW OR WEDNESDAY...
CHECK ROAD CONDITIONS BEFORE DEPARTING. CARRY TIRE CHAINS AND
EXTRA CLOTHING. WIND CHILL READINGS NEAR ZERO ARE POSSIBLE BEHIND
THE COLD FRONT WEDNESDAY NIGHT.

CAZ068-281115-
/O.UPG.KSTO.WS.A.0022.101228T2000Z-101230T0000Z/
/O.NEW.KSTO.WS.W.0021.101228T2200Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
301 PM PST MON DEC 27 2010

...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO 10 AM PST
WEDNESDAY ABOVE 4500 FEET...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WARNING ABOVE 4500 FEET FOR HEAVY SNOW AND/OR BLOWING SNOW
WHICH IS IN EFFECT FROM 2 PM TUESDAY TO 10 AM PST WEDNESDAY FOR
WESTERN PLUMAS COUNTY AND LASSEN PARK. THE WINTER STORM WATCH 
IS NO LONGER IN EFFECT.


* TIMING: SCATTERED SNOW SHOWERS MAY BEGIN LATE TONIGHT WITH
  STEADY SNOW EXPECTED BY TOMORROW AFTERNOON. PERIODS OF HEAVY
  SNOW ARE LIKELY TOMORROW NIGHT INTO WEDNESDAY MORNING. SNOW
  LEVELS... INITIALLY NEAR 5000 FEET IN LASSEN PARK... WILL FALL TO
  NEAR 2500 FEET BY WEDNESDAY AFTERNOON. COLD AND ICY CONDITIONS
  ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000
  FEET...WITH 6 TO 12 INCHES ABOVE 4500 FEET BY WEDNESDAY
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 3000
  FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 50 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES TOMORROW EVENING THROUGH WEDNESDAY 
  MORNING.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ069-281115-
/O.UPG.KSTO.WS.A.0022.101228T2000Z-101230T0000Z/
/O.NEW.KSTO.WS.W.0021.101229T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
301 PM PST MON DEC 27 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM TUESDAY TO 4 PM PST
WEDNESDAY ABOVE 5000 FEET...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
STORM WARNING ABOVE 5000 FEET FOR HEAVY SNOW...AND/OR BLOWING
SNOW...WHICH IS IN EFFECT FROM 4 PM TUESDAY TO 4 PM PST
WEDNESDAY FOR THE WESTERN SLOPES OF THE NORTHERN SIERRA NEVADA. 
THE WINTER STORM WATCH IS NO LONGER IN EFFECT.


* TIMING: SCATTERED SNOW SHOWERS WILL BEGIN LATE TOMORROW 
  MORNING.STEADY SNOW IS EXPECTED BY TOMORROW AFTERNOON. 
  PERIODS OF HEAVY SNOW ARE POSSIBLE TOMORROW EVENING...
  TOMORROW NIGHT AND WEDNESDAY MORNING. SNOW LEVELS...
  INITIALLY FROM 5000 FEET IN LASSEN PARK TO 6000 FEET ALONG 
  THE WEST SLOPE OF THE SIERRA... WILL FALL TO 3000 FEET BY 
  WEDNESDAY AFTERNOON. COLD AND ICY CONDITIONS ARE LIKELY TO 
  PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000
  FEET...WITH 6 TO 12 INCHES ABOVE 5000 FEET THROUGH WEDNESDAY
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 3000
  FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS HIGHER
  MOUNTAIN PASSES TOMORROW EVENING INTO WEDNESDAY MORNING.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND CHILLS
  TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ013-014-063-281115-
/O.NEW.KSTO.WW.Y.0041.101228T1800Z-101229T1200Z/
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
301 PM PST MON DEC 27 2010

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 4 AM
PST WEDNESDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY ABOVE 4000 FEET FOR SNOW WHICH IS IN EFFECT FROM
10 AM TUESDAY TO 4 AM PST WEDNESDAY.

* TIMING: SCATTERED SNOW SHOWERS MAY BEGIN LATER TONIGHT WITH
  STEADY SNOW EXPECTED ON TUESDAY. PERIODS OF HEAVY SNOW ARE
  LIKELY TOMORROW EVENING WITH LINGERING SHOWERS INTO WEDNESDAY.
  SNOW LEVELS... INITIALLY NEAR 4000 FEET OVER THE SHASTA COUNTY
  MOUNTAINS AND NORTHERN COASTAL RANGE... WILL FALL TO BETWEEN
  1000 TO 2500 FEET BY WEDNESDAY AFTERNOON. COLD AND ICY
  CONDITIONS ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: A FOOT OR MORE OF NEW SNOW IS POSSIBLE ABOVE 7000
  FEET...WITH 4 TO 7 INCHES ABOVE 4000 FEET BY WEDNESDAY MORNING.
  A COUPLE OF INCHES OF SNOW MAY FALL BETWEEN 2000 AND 3000 FEET
  ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 50 MPH ARE POSSIBLE ACROSS HIGHER
  MOUNTAIN PASSES TOMORROW NIGHT.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND CHILLS
  TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
6 follow-up statements
021 
WWUS46 KSTO 281220
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
420 AM PST TUE DEC 28 2010

...MORE HEAVY SNOW ON THE WAY FOR THE MOUNTAINS...

.A STRONG POLAR JET STREAM WILL DRIVE ANOTHER LOW PRESSURE SYSTEM
INTO NORTHERN CALIFORNIA TONIGHT AND WEDNESDAY. SCATTERED
SNOW SHOWERS WILL BECOME STEADY THIS MORNING OVER THE NORTHERN
MOUNTAINS AND BY LATE AFTERNOON FOR THE WESTERN SLOPES OF THE
NORTHERN SIERRA NEVADA.

SNOW LEVELS WILL BEGIN NEAR 3500 FEET OVER THE NORTHERN MOUNTAINS
TO NEAR 4500 FEET IN THE LASSEN PARK AREA AND NEAR 5500 FEET FOR
THE NORTHERN SIERRA NEVADA. SNOW LEVELS WILL LOWER TOMORROW TO NEAR
1000 FEET OVER SHASTA COUNTY TO NEAR 2500 FEET FOR THE MOTHERLODE
BUT NOT MUCH ACCUMULATION IS EXPECTED AT THOSE LOWER LEVELS.

SOUTHWEST WIND GUSTS TO 70 MPH OVER HIGHER MOUNTAIN PASSES MAY
CREATE WHITE-OUT CONDITIONS AT TIMES IN BLOWING SNOW... ESPECIALLY
TONIGHT INTO WEDNESDAY MORNING. SNOW WILL TAPER OFF TO SCATTERED
SNOW SHOWERS DURING THE DAY ON WEDNESDAY. ICY ROADWAYS ARE LIKELY
TO PERSIST INTO WEDNESDAY EVENING AND WEDNESDAY NIGHT.

IF YOU PLAN TO TRAVEL IN THE MOUNTAINS TOMORROW OR WEDNESDAY...
CHECK ROAD CONDITIONS BEFORE DEPARTING. CARRY TIRE CHAINS AND
EXTRA CLOTHING. WIND CHILL READINGS NEAR ZERO ARE POSSIBLE BEHIND
THE COLD FRONT WEDNESDAY NIGHT.

CAZ068-290100-
/O.CON.KSTO.WS.W.0021.101228T2200Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
420 AM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 10 AM PST WEDNESDAY ABOVE 4500 FEET...

A WINTER STORM WARNING ABOVE 4500 FEET REMAINS IN EFFECT FROM
2 PM THIS AFTERNOON TO 10 AM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY
  SNOW ARE LIKELY TONIGHT INTO WEDNESDAY MORNING. SNOW
  LEVELS... INITIALLY NEAR 4500 FEET IN LASSEN PARK... WILL FALL
  TO NEAR 2000 FEET BY WEDNESDAY AFTERNOON. COLD AND ICY CONDITIONS
  ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000 
  FEET...WITH 6 TO 12 INCHES ABOVE 4500 FEET BY WEDNESDAY 
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES THIS EVENING THROUGH WEDNESDAY 
  MORNING.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ069-290100-
/O.CON.KSTO.WS.W.0021.101229T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
420 AM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 PM PST WEDNESDAY ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT FROM
4 PM THIS AFTERNOON TO 4 PM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY SNOW
  ARE POSSIBLE THIS EVENING...TONIGHT AND WEDNESDAY MORNING. SNOW
  LEVELS...INITIALLY FROM 4500 FEET IN LASSEN PARK TO 5000 FEET
  ALONG THE WEST SLOPE OF THE SIERRA... WILL FALL TO 3000 FEET BY
  WEDNESDAY AFTERNOON. COLD AND ICY CONDITIONS ARE LIKELY TO
  PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000 
  FEET...WITH 6 TO 12 INCHES ABOVE 5000 FEET THROUGH WEDNESDAY 
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 70 MPH ARE POSSIBLE ACROSS
  HIGHER MOUNTAIN PASSES TOMORROW EVENING INTO WEDNESDAY 
  MORNING. 

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ013-014-063-290100-
/O.CON.KSTO.WW.Y.0041.101228T1800Z-101229T1200Z/
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
420 AM PST TUE DEC 28 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 4 AM PST WEDNESDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT FROM
10 AM THIS MORNING TO 4 AM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY SNOW
  ARE LIKELY THIS EVENING WITH LINGERING SHOWERS INTO
  WEDNESDAY. SNOW LEVELS... INITIALLY NEAR 4000 FEET OVER THE
  SHASTA COUNTY MOUNTAINS AND NORTHERN COASTAL RANGE... WILL FALL
  TO BETWEEN 1000 TO 2500 FEET BY WEDNESDAY AFTERNOON. COLD AND
  ICY CONDITIONS ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: A FOOT OR MORE OF NEW SNOW IS POSSIBLE ABOVE 6000 
  FEET...WITH 4 TO 7 INCHES ABOVE 4000 FEET BY WEDNESDAY 
  MORNING. A COUPLE OF INCHES OF SNOW MAY FALL BETWEEN 2000 
  AND 3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS
  HIGHER MOUNTAIN PASSES TOMORROW NIGHT. 

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JCLAPP
090 
WWUS46 KSTO 281223
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
423 AM PST TUE DEC 28 2010

...MORE HEAVY SNOW ON THE WAY FOR THE MOUNTAINS...

.A STRONG POLAR JET STREAM WILL DRIVE ANOTHER LOW PRESSURE SYSTEM
INTO NORTHERN CALIFORNIA TODAY AND WEDNESDAY. SCATTERED SNOW
SHOWERS BECOMING STEADY THIS MORNING OVER THE NORTHERN MOUNTAINS AND
BY LATE AFTERNOON FOR THE WESTERN SLOPES OF THE NORTHERN SIERRA
NEVADA.

SNOW LEVELS WILL BEGIN NEAR 3500 FEET OVER THE NORTHERN MOUNTAINS
TO NEAR 4500 FEET IN THE LASSEN PARK AREA AND NEAR 5500 FEET FOR
THE NORTHERN SIERRA NEVADA. SNOW LEVELS WILL LOWER TOMORROW TO
NEAR 1000 FEET OVER SHASTA COUNTY TO NEAR 2500 FEET FOR THE
MOTHERLODE BUT NOT MUCH ACCUMULATION IS EXPECTED AT THOSE LOWER
LEVELS.

SOUTHWEST WIND GUSTS TO 70 MPH OVER HIGHER MOUNTAIN PASSES MAY
CREATE WHITE-OUT CONDITIONS AT TIMES IN BLOWING SNOW...
ESPECIALLY TONIGHT INTO WEDNESDAY MORNING. SNOW WILL TAPER OFF TO
SCATTERED SNOW SHOWERS DURING THE DAY ON WEDNESDAY. ICY ROADWAYS
ARE LIKELY TO PERSIST INTO WEDNESDAY EVENING AND WEDNESDAY NIGHT.

IF YOU PLAN TO TRAVEL IN THE MOUNTAINS TOMORROW OR WEDNESDAY...
CHECK ROAD CONDITIONS BEFORE DEPARTING. CARRY TIRE CHAINS AND
EXTRA CLOTHING. WIND CHILL READINGS NEAR ZERO ARE POSSIBLE BEHIND
THE COLD FRONT WEDNESDAY NIGHT.

CAZ068-290030-
/O.CON.KSTO.WS.W.0021.101228T2200Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
423 AM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 10 AM PST WEDNESDAY ABOVE 4500 FEET...

A WINTER STORM WARNING ABOVE 4500 FEET REMAINS IN EFFECT FROM
2 PM THIS AFTERNOON TO 10 AM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH 
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY 
  SNOW ARE LIKELY TONIGHT INTO WEDNESDAY MORNING. SNOW 
  LEVELS... INITIALLY NEAR 4500 FEET IN LASSEN PARK... WILL 
  FALL TO NEAR 2000 FEET BY WEDNESDAY AFTERNOON. COLD AND ICY 
  CONDITIONS ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000 
  FEET...WITH 6 TO 12 INCHES ABOVE 4500 FEET BY WEDNESDAY 
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES THIS EVENING THROUGH WEDNESDAY 
  MORNING. 

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ069-290030-
/O.CON.KSTO.WS.W.0021.101229T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
423 AM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 PM PST WEDNESDAY ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT FROM
4 PM THIS AFTERNOON TO 4 PM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH 
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY 
  SNOW ARE POSSIBLE THIS EVENING...TONIGHT AND WEDNESDAY 
  MORNING. SNOW LEVELS...INITIALLY FROM 4500 FEET IN LASSEN 
  PARK TO 5000 FEET ALONG THE WEST SLOPE OF THE SIERRA... WILL 
  FALL TO 3000 FEET BY WEDNESDAY AFTERNOON. COLD AND ICY 
  CONDITIONS ARE LIKELY TO PERSIST INTO WEDNESDAY NIGHT.

* SNOWFALL: 1 TO 2 FEET OF NEW SNOW IS POSSIBLE ABOVE 7000 
  FEET...WITH 6 TO 12 INCHES ABOVE 5000 FEET THROUGH WEDNESDAY 
  AFTERNOON. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND 
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 70 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES TOMORROW EVENING INTO WEDNESDAY 
  MORNING. 

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ013-014-063-290030-
/O.CON.KSTO.WW.Y.0041.101228T1800Z-101229T1200Z/
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
423 AM PST TUE DEC 28 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 4 AM PST WEDNESDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT FROM
10 AM THIS MORNING TO 4 AM PST WEDNESDAY. 

* TIMING: SCATTERED SNOW SHOWERS BEGINNING THIS MORNING WITH 
  STEADY SNOW EXPECTED BY THIS AFTERNOON. PERIODS OF HEAVY 
  SNOW ARE LIKELY THIS EVENING WITH LINGERING SHOWERS INTO 
  WEDNESDAY. SNOW LEVELS... INITIALLY NEAR 4000 FEET OVER THE 
  SHASTA COUNTY MOUNTAINS AND NORTHERN COASTAL RANGE... WILL 
  FALL TO BETWEEN 1000 TO 2500 FEET BY WEDNESDAY AFTERNOON. 
  COLD AND ICY CONDITIONS ARE LIKELY TO PERSIST INTO WEDNESDAY 
  NIGHT.

* SNOWFALL: A FOOT OR MORE OF NEW SNOW IS POSSIBLE ABOVE 6000 
  FEET...WITH 4 TO 7 INCHES ABOVE 4000 FEET BY WEDNESDAY 
  MORNING. A COUPLE OF INCHES OF SNOW MAY FALL BETWEEN 2000 
  AND 3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES TOMORROW NIGHT.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS. HAZARDOUS BACK 
  COUNTRY CONDITIONS AND AVALANCHE DANGER. VERY COLD WIND 
  CHILLS TOWARD THE END OF THE EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
844 
WWUS46 KSTO 282251
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
251 PM PST TUE DEC 28 2010

...MORE HEAVY SNOW AND GUSTY WINDS ON THE WAY FOR THE MOUNTAINS...

.A STRONG STORM SYSTEM WILL BRING HEAVY RAIN AND STRONG WINDS TO THE
VALLEY AS WELL AS HEAVY SNOW AND STRONG WINDS TO THE MOUNTAINS
TONIGHT THROUGH EARLY WEDNESDAY MORNING.


CAZ068-291200-
/O.CON.KSTO.WS.W.0021.000000T0000Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
251 PM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 4500 FEET...

A WINTER STORM WARNING ABOVE 4500 FEET REMAINS IN EFFECT UNTIL
10 AM PST WEDNESDAY FOR HEAVY SNOW AND BLOWING SNOW. 

* TIMING: SNOW IS EXPECTED OFF AND ON THROUGH WEDNESDAY AFTERNOON.
  HEAVIEST SNOW WILL BE LATE THIS EVENING INTO EARLY WEDNESDAY
  MORNING. SNOW LEVELS...INITIALLY NEAR 4500 FEET IN LASSEN
  PARK...WILL FALL TO NEAR 2000 FEET BY WEDNESDAY AFTERNOON.

* SNOWFALL: 1 TO 2 FEET OF SNOW ABOVE 7000 FEET...6 TO 12 INCHES
  ABOVE 4500 FEET. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS HIGHER
  MOUNTAIN PASSES THROUGH WEDNESDAY MORNING.

* MAIN IMPACTS: HAZARDOUS TRAVELING WITH AREAS OF WHITE OUT
  CONDITIONS AT MOUNTAIN PASS LEVELS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DANGEROUS. STRONG AND GUSTY WINDS WILL ALSO CAUSE BLOWING
SNOW...WHICH MAY CAUSE PERIODS OF WHITE OUT CONDITIONS.  IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ069-291200-
/O.CON.KSTO.WS.W.0021.101229T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
251 PM PST TUE DEC 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
4 PM PST WEDNESDAY FOR HEAVY SNOW AND BLOWING SNOW.

* TIMING: SNOW OFF AND ON THROUGH WEDNESDAY. HEAVIEST SNOW WILL
  FALL LATE THIS EVENING INTO EARLY WEDNESDAY MORNING. SNOW
  LEVELS...INITIALLY AROUND 5000 FEET ALONG THE WEST SLOPE OF THE
  SIERRA... WILL FALL TO 3000 FEET BY WEDNESDAY AFTERNOON.

* SNOWFALL: 1 TO 2 FEET ABOVE 7000 FEET...WITH 6 TO 12 INCHES
  ABOVE 5000 FEET. SEVERAL INCHES OF SNOW MAY FALL DOWN TO AROUND
  3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 70 MPH ARE POSSIBLE ACROSS HIGHER
  MOUNTAIN PASSES.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS WITH WHITE OUT
  CONDITIONS AT MOUNTAIN PASS LEVEL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DANGEROUS. STRONG AND GUSTY WINDS WILL ALSO CAUSE BLOWING
SNOW...WHICH MAY CAUSE PERIODS OF WHITE OUT CONDITIONS.  IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ013-014-063-291200-
/O.CON.KSTO.WW.Y.0041.000000T0000Z-101229T1200Z/
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
251 PM PST TUE DEC 28 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
WEDNESDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT UNTIL
4 AM PST WEDNESDAY FOR SNOW AND BLOWING SNOW. 

* TIMING: PERIODS OF HEAVY SNOW ARE LIKELY THIS EVENING WITH
  LINGERING SHOWERS INTO WEDNESDAY. SNOW LEVELS... INITIALLY NEAR
  4000 FEET OVER THE SHASTA COUNTY MOUNTAINS AND NORTHERN COASTAL
  RANGE... WILL FALL TO BETWEEN 1000 TO 2500 FEET BY WEDNESDAY
  AFTERNOON. 

* SNOWFALL: A FOOT OR MORE OF NEW SNOW IS POSSIBLE ABOVE 6000
  FEET...WITH 4 TO 7 INCHES ABOVE 4000 FEET. A COUPLE OF INCHES
  OF SNOW MAY FALL BETWEEN 2000 AND 3000 FEET ON WEDNESDAY.

* WINDS: SOUTHWEST WIND GUSTS TO 60 MPH ARE POSSIBLE ACROSS 
  HIGHER MOUNTAIN PASSES TOMORROW NIGHT.

* MAIN IMPACTS: HAZARDOUS TRAVELING CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
246 
WWUS46 KSTO 291130
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
330 AM PST WED DEC 29 2010

CAZ013-014-063-291230-
/O.CAN.KSTO.WW.Y.0041.000000T0000Z-101229T1200Z/
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
330 AM PST WED DEC 29 2010

...WINTER WEATHER ADVISORY IS CANCELLED...

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

$$

CAZ068-291800-
/O.CON.KSTO.WS.W.0021.000000T0000Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
330 AM PST WED DEC 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 4500 FEET...

A WINTER STORM WARNING ABOVE 4500 FEET REMAINS IN EFFECT UNTIL
10 AM PST THIS MORNING FOR WESTERN PLUMAS COUNTY AND THE LASSEN
VOLCANIC NATIONAL PARK.

* TIMING: SNOW SHOWERS WILL TAPER OFF ACROSS THE AREA THIS
  MORNING.

* SNOWFALL: ADDITIONAL SNOWFALL ACCUMULATIONS OF UP TO 3 INCHES
  WILL BE POSSIBLE THIS MORNING.

* WINDS: WEST WINDS 10 TO 20 MPH WITH LOCAL GUSTS TO AROUND 30 MPH
  AT THE HIGHER ELEVATIONS.

* MAIN IMPACTS: HAZARDOUS TRAVEL WITH SNOW PACKED ROADS AT THE
  HIGHER ELEVATIONS. LOCAL AREAS OF BLOWING SNOW RESULTING IN
  REDUCED VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DIFFICULT. STRONG AND GUSTY WINDS WILL ALSO CAUSE BLOWING SNOW...
WHICH MAY CAUSE PERIODS OF WHITE OUT CONDITIONS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

CAZ069-300000-
/O.CON.KSTO.WS.W.0021.000000T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
330 AM PST WED DEC 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
4 PM PST THIS AFTERNOON FOR THE WEST SLOPES OF THE NORTHERN SIERRA
NEVADA.

* TIMING: HEAVY SNOW WILL END FROM THE NORTH EARLY THIS MORNING
  WITH NUMEROUS SNOW SHOWERS CONTINUING THROUGH THE DAY.

* SNOWFALL: ADDITIONAL SNOWFALL ACCUMULATIONS OF 5 TO 10 INCHES
  WILL BE POSSIBLE ALONG THE CREST TODAY WITH 2 TO 4 INCHES OF
  ACCUMULATION POSSIBLE DOWN TO AROUND THE 5000 FOOT LEVEL. SNOW
  LEVELS WILL LOWER BELOW 4000 FEET THIS AFTERNOON.

* WINDS: SOUTHWEST WIND 15 TO 25 MPH WITH GUSTS TO 40 MPH POSSIBLE
  ACROSS THE HIGHER MOUNTAIN PASSES.

* MAIN IMPACTS: HAZARDOUS TRAVEL WITH SNOW PACKED ROADS AND WHITE
  OUT CONDITIONS THROUGH THE PASSES WITH BLOWING AND DRIFTING SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DIFFICULT. STRONG AND GUSTY WINDS WILL ALSO CAUSE BLOWING SNOW...
WHICH MAY CAUSE PERIODS OF WHITE OUT CONDITIONS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$
504 
WWUS46 KSTO 291717
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
917 AM PST WED DEC 29 2010

CAZ068-291830-
/O.CAN.KSTO.WS.W.0021.000000T0000Z-101229T1800Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITY OF...CHESTER
917 AM PST WED DEC 29 2010

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELLED THE
WINTER STORM WARNING. 

A FEW SNOW SHOWERS WILL BE POSSIBLE TODAY...BUT NOT SIGNIFICANT
ACCUMULATIONS ARE EXPECTED...THUS THE WINTER STORM WARNING HAS
BEEN ALLOWED TO EXPIRE. 

$$

CAZ069-300000-
/O.CON.KSTO.WS.W.0021.000000T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
917 AM PST WED DEC 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
4 PM PST THIS AFTERNOON. 

* TIMING: LOOK FOR DECREASING SNOW SHOWERS THROUGH THE DAY.

* SNOWFALL: ADDITIONAL SNOWFALL ACCUMULATIONS OF 1 TO 3 INCHES
  WILL BE POSSIBLE ALONG THE CREST TODAY WITH AROUND AN INCH OF
  ACCUMULATION POSSIBLE DOWN TO AROUND THE 5000 FOOT LEVEL. SNOW
  LEVELS WILL LOWER BELOW 4000 FEET THIS AFTERNOON.

* WINDS: SOUTHWEST WIND 15 TO 25 MPH WITH GUSTS TO 40 MPH
  POSSIBLE ACROSS THE HIGHER MOUNTAIN PASSES. 

* MAIN IMPACTS: HAZARDOUS TRAVEL WITH SNOW PACKED ROADS AND 
  WHITEOUT CONDITIONS THROUGH THE PASSES WITH BLOWING AND 
  DRIFTING SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DIFFICULT. STRONG AND GUSTY WINDS WILL ALSO CAUSE BLOWING SNOW...
WHICH MAY CAUSE PERIODS OF WHITE OUT CONDITIONS. IF YOU MUST
TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

&&

$$
419 
WWUS46 KSTO 292359
WSWSTO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
359 PM PST WED DEC 29 2010

CAZ069-300100-
/O.EXP.KSTO.WS.W.0021.000000T0000Z-101230T0000Z/
WEST SLOPE NORTHERN SIERRA NEVADA-
INCLUDING THE CITY OF...BLUE CANYON
359 PM PST WED DEC 29 2010

...WINTER STORM WARNING WILL EXPIRE AT 4 PM PST THIS AFTERNOON...

THE WINTER STORM WARNING FOR THE WEST SLOPES OF THE SIERRA NEVADA WILL
EXPIRE AT 4 PM PST THIS AFTERNOON.

LIGHT SNOW SHOWERS WILL CONTINUE THROUGH THE EVENING HOURS OVER
THE WEST SLOPES OF THE SIERRA NEVADA BUT NO SIGNIFICANT ADDITIONAL
SNOWFALL ACCUMULATION IS EXPECTED. SNOWFALL FROM LAST NIGHTS
WEATHER SYSTEM MAY CONTINUE TO CAUSE TRAVEL DIFFICULTIES ACROSS
THE SIERRA THIS EVENING. IF TRAVELING THROUGH THE SIERRA
TONIGHT...CONTINUE TO CHECK THE LATEST ROAD REPORTS FOR TRAVEL
RESTRICTIONS OR CHAIN CONTROLS.

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sacramento, CA wrote its last area forecast discussion before this winter storm warning went out at Dec 27, 2:50 PM PST, 11 minutes earlier.

Area forecast discussion, Dec 27, 2:50 PM PST, 11 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
250 PM PST MON DEC 27 2010

.EXTENDED DISCUSSION (FRIDAY THROUGH MONDAY)...
SUBSTANTIAL VARIABILITY BETWEEN THE GFS...ECMWF...AND CANADIAN 12Z
MODEL RUNS IN THE LONG TERM PERIOD. THE MODELS ALL INDICATE RIDGING
OVER CALIFORNIA AND LOW PRESSURE DISTURBANCE ORIGINATING FROM THE
GULF OF ALASKA THURSDAY...BUT BY FRIDAY THE LOCATION AND DYNAMICS OF
THE LOW VARY GREATLY. THE GFS ATTEMPTS TO BRING THIS LOW IN AS A
TROUGH ALONG THE PAC NW LATE FRIDAY AND THEN SLIDE THE REMAINING
MOISTURE EAST OF THE SIERRA BY SATURDAY AFTERNOON.  MUCH UNLIKE THE
MORE PROGRESSIVE GFS...THE EC FORMS A SLOW MOVING CLOSED LOW
CENTERED AT 135W AND 40N BY EARLY SATURDAY THAT THEN SLIDES DOWN THE
CALIFORNIA COAST LATE IN THE WEEKEND. THE GEM RESEMBLES A COMPROMISE
BETWEEN THE GFS AND ECMWF. THE GEM BRINGS IN AN UPPER LEVEL LOW TO
NORTHERN CALIFORNIA LATE SATURDAY THAT PUSHES THROUGH THE REST OF
THE STATE BY THE END OF THE WEEKEND AND WOULD PROVIDE THE HIGHEST
PROBABILITY OF PRECIP FOR THE CWA. THE LIKELIHOOD OF PRECIPITATION
FOR MOST OF NORTHERN CALIFORNIA ON NEW YEARS EVE LOOKS LOW DESPITE
THE HIGH MODEL UNCERTAINTY.

BASED ON THE PERFORMANCE OF THE MODELS IN RECENT WEEKS HAVE
WEIGHTED TODAYS FORECAST TOWARDS THE SLIGHTLY WARMER AND WETTER GFS
AND GEM OUTPUT YIELDING A SLIGHT CHANCE OF SHOWERS FOR THE WEEKEND...
PREDOMINATELY OVER THE MOUNTAINS.  DRP

&&

.AVIATION...A FEW LOW CLOUDS ARE LINGERING IN THE VICINITY OF KSMF
AND BETWEEN KSMF AND KSCK...WITH LOCAL IFR CEILINGS POSSIBLE THIS
AFTERNOON.  OTHERWISE...SEEING PRIMARILY VFR CONDITIONS ACROSS THE
REGION.  HIGH CLOUDS ARE BEGINNING TO STREAM ACROSS NORTHERN
CALIFORNIA...AHEAD OF THE NEXT SYSTEM.  IN FACT...SOME WARM FRONTAL
PRECIPITATION IS JUST OFF THE COAST...AND WILL SPREAD ACROSS THE
NORTHERN MOUNTAINS LATER THIS EVENING AND OVERNIGHT TONIGHT.
THEREFORE...EXPECT CEILING TO START LOWERING THIS EVENING...WITH
MVFR AND AREAS OF IFR CONDITIONS DEVELOPING ACROSS THE NORTHERN
AREAS TONIGHT AFTER 04Z...THEN SPREADING SOUTH AND EAST THROUGH THE
NIGHT AND TOMORROW.  EXPECT DETERIORATING CONDITIONS IN THE
MOUNTAINS...WITH IFR/LIFR CONDITIONS THERE.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING FROM 2 PM TUESDAY TO 10 AM PST WEDNESDAY
ABOVE 4500 FEET FOR THE WESTERN PLUMAS COUNTY/LASSEN PARK.

WINTER STORM WARNING FROM 4 PM TUESDAY TO 4 PM PST WEDNESDAY
ABOVE 5000 FEET FOR THE WEST SLOPE NORTHERN SIERRA NEVADA.

WINTER WEATHER ADVISORY FROM 10 AM TUESDAY TO 4 AM PST WEDNESDAY
ABOVE 4000 FEET FOR THE BURNEY BASIN / EASTERN SHASTA COUNTY...
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY...
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY.

&&

PUBLIC...61

AVIATION...61
Hazardous weather outlook, Dec 27, 4:25 AM PST, 10 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
425 AM PST MON DEC 27 2010

CAZ013>019-063-064-066>069-281500-
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-
425 AM PST MON DEC 27 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

A FEW AREAS OF LIGHT PRECIPITATION WILL BE POSSIBLE ACROSS THE
REGION TODAY ALONG WITH SOME PATCHES OF MORNING VALLEY
FOG...OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

ANOTHER WEATHER SYSTEM WILL SPREAD PRECIPITATION ACROSS THE REGION
TUESDAY INTO WEDNESDAY WITH PERIODS OF HEAVY SNOW AND GUSTY WINDS
POSSIBLE ACROSS THE HIGHER ELEVATIONS OF THE NORTHERN SIERRA NEVADA.
COLDER AND DRIER CONDITIONS WILL SETTLE IN FOR LATE IN THE WEEK.

* 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

In the hours before

Special weather statement, Dec 27, 3:01 PM PST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SACRAMENTO CA
301 PM PST MON DEC 27 2010

CAZ015>019-064-066-067-281115-
NORTHERN SACRAMENTO VALLEY-CENTRAL SACRAMENTO VALLEY-
SOUTHERN SACRAMENTO VALLEY-CARQUINEZ STRAIT AND DELTA-
NORTHERN SAN JOAQUIN VALLEY-CLEAR LAKE/SOUTHERN LAKE COUNTY-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
301 PM PST MON DEC 27 2010

...ANOTHER STORM WILL TAKE AIM AT NORTHERN CALIFORNIA...AND COULD
BRING SNOW TO THE FOOTHILLS WEDNESDAY

A STRONG POLAR JET STREAM WILL DRIVE ANOTHER LOW PRESSURE SYSTEM
INTO NORTHERN CALIFORNIA TOMORROW NIGHT AND WEDNESDAY. SCATTERED
SHOWERS WILL RETURN LATER TONIGHT OVER THE NORTHERN MOUNTAINS AND
RAIN WILL BECOME STEADY IN THE MORNING OVER THE NORTHERN
SACRAMENTO VALLEY AND SURROUNDING FOOTHILLS...AND THEN SPREAD
SOUTH AND EAST INTO SOUTHERN SACRAMENTO AND NORTHERN SAN JOAQUIN
VALLEY AND MOTHERLODE IN THE AFTERNOON. THE MAIN PART OF THE STORM
WILL MOVE THROUGH THE INTERIOR TUESDAY EVENING INTO EARLY
WEDNESDAY MORNING WHEN MODERATE TO LOCALLY HEAVY RAINFALL WILL
LIKELY OCCUR WITH GUSTY WINDS AS THE FRONT MOVES THROUGH.

PRECIPITATION WILL TURN MORE SHOWERY BEHIND THE COLD FRONT
WEDNESDAY...AS MUCH COLDER AIR WILL SPILLS INTO NORTHERN
CALIFORNIA. SNOW LEVELS WILL DROP TO 1000 FEET IN SHASTA
COUNTY...TO 2500 FEET IN THE MOTHERLODE AND SOUTHERN LAKE COUNTY
HILLS DURING THE DAY ON WEDNESDAY.

RAINFALL TOTALS FROM THIS STORM WILL RANGE FROM ONE HALF INCH TO
AN INCH IN THE VALLEYS. ONE TO TWO INCHES OF RAIN WITH LOCAL
HIGHER AMOUNTS POSSIBLE FOR THE NORTHERN FOOTHILLS. A COUPLE OF
INCHES OF SNOW MAY FALL OVER THE ELEVATIONS BETWEEN 2000 AND 3000
FEET OF SHASTA COUNTY AND LAKE COUNTY ON WEDNESDAY WITH LIGHT
AMOUNTS OF SNOW THE HIGHER ELEVATIONS OF THE MOTHERLODE. UNSTABLE
AIR COULD CAUSE SHOWERS WITH SMALL HAIL OR SLEET ON WEDNESDAY.

CLEARING SKIES AND COLDER TEMPERATURES ARE LIKELY WEDNESDAY NIGHT.
NORTH WINDS MAY PREVENT TEMPERATURES FROM FALLING BELOW FREEZING
IN MANY VALLEY AREAS...BUT IT WILL FEEL QUITE CHILLY. WIND CHILLS
TEMPERATURES IN THE TEENS AND 20S ARE POSSIBLE FOR FOOTHILL AND
CENTRAL VALLEY LOCATIONS. WIND SHELTER AREAS IN THE CENTRAL VALLEY
WILL LIKELY HAVE TEMPERATURES DIP INTO THE UPPER 20S TO LOWER 30S
WHILE IN THE FOOTHILLS WIND SHELTERED LOCATIONS WILL LIKELY DIP
INTO THE MID 20S. ICY ROADWAYS WEDNESDAY NIGHT AS TEMPERATURES
COOL MAY ALSO BECOME A PROBLEM...MAINLY FOR THE FOOTHILLS.

CONTINUE TO MONITOR THE LATEST NATIONAL WEATHER SERVICE FORECASTS
FOR UPDATES ON THIS DEVELOPING STORM.

RB

The office that day

Everything else NWS Sacramento, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 27, 4:16 AM PSTWinter Storm WatchSTO11 hr
Dec 27, 3:01 PM PSTWinter Weather AdvisorySTO36 hr

Nearby

Winter Storm Warnings in California, 2010Every winter storm warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.