Winter Storm Warning 11, NWS Sacramento, CA

768 
WWUS46 KSTO 210954
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
154 AM PST Tue Dec 21 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds Tuesday through Sunday. Snow showers are
expected to begin this afternoon along the coastal range, then 
spreading to the Sierra Tuesday evening with up to 1 foot of snow 
above 4500-6500 feet through Wednesday afternoon. Heavier snow is 
forecast to start Wednesday evening and continue into the weekend 
with an additional 1-2 feet of snow possible each day over the
western slopes and lowering snow levels.

Major travel delays and difficult travel conditions are 
anticipated later this week. Gusty winds will further reduce 
visibilities during this event with local whiteout conditions 
possible. Holiday travelers should prepare for winter driving 
conditions by packing chains, warm winter clothes, and extra food 
and water.

CAZ013-014-063-220000-
/O.EXT.KSTO.WS.W.0011.211223T1200Z-211227T0000Z/
/O.EXT.KSTO.WW.Y.0023.211222T0300Z-211223T1200Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
154 AM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING
TO 4 AM PST THURSDAY...
...WINTER STORM WARNING NOW IN EFFECT FROM 4 AM THURSDAY TO 4 PM
PST SUNDAY...

* WHAT...Total snow accumulations of 9 to 13 inches, with
  localized amounts up 3 to 4 feet, are expected Thursday through
  Sunday. Total wet snow accumulations of 1 to 3 inches, with 
  localized amounts up to 15 inches, are expected through 
  Wednesday night above 4500 feet.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 AM Thursday to 4 PM 
  Sunday. For the Winter Weather Advisory, 7 PM today to 4 AM 
  Thursday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ068-069-220000-
/O.CON.KSTO.WS.W.0011.211223T0000Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.211222T0300Z-211223T0000Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
154 AM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 4 PM PST WEDNESDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO
4 PM PST SUNDAY...

* WHAT...Heavy snow expected. Travel will be very difficult to
  impossible. Total snow accumulations of 3 to 4 feet, with
  localized amounts up to 9 feet, are expected. Tree branches
  could fall as well causing power outages during this time period.
  Total wet snow accumulations of 2 to 4 inches, with localized 
  amounts up to 14 inches, are expected through Wednesday 
  afternoon.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...For the Winter Storm Warning, 4 PM Wednesday to 4 PM 
  Sunday. For the Winter Weather Advisory, 7 PM today to 4 PM 
  Wednesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

975 
WWUS46 KSTO 212350
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
350 PM PST Tue Dec 21 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds today through Sunday. Snow showers will
continue to impact the Coastal Range this afternoon, then 
spread into the Sierra this evening after midnight with up to 1 
foot of snow above 5000-6500 feet through Wednesday afternoon. 
Heavier snow is forecast to start Wednesday evening and continue 
into the weekend with an additional 1-2 feet of snow possible each
day over the western slopes and lowering snow levels.

Major travel delays and difficult travel conditions are
anticipated later this week. Gusty winds will further reduce
visibilities during this event with local whiteout conditions
possible. Holiday travelers should prepare for winter driving
conditions by packing chains, warm winter clothes, and extra food
and water.

CAZ013-063-221430-
/O.EXT.KSTO.WW.Y.0023.211222T0000Z-211223T1200Z/
/O.CON.KSTO.WS.W.0011.211223T1200Z-211227T0000Z/
Shasta Lake Area / Northern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Shasta Dam
350 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 AM PST
THURSDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM THURSDAY TO
4 PM PST SUNDAY...

* WHAT...Heavy snow expected. Wet snow expected. Travel will be
  very difficult to impossible. Total snow accumulations of 8 to
  12 inches, with localized amounts up to 3-4 feet, are expected.
  Total wet snow accumulations of 1 to 3 inches, with localized
  amounts up to 1 feet, locally higher, are expected through 
  Wednesday night above 4500 feet.

* WHERE...Shasta Lake Area / Northern Shasta County and 
  Mountains Southwestern Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 AM Thursday to 4 PM 
  Sunday. For the Winter Weather Advisory, 4 PM today to 4 AM 
  Thursday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ068-069-221430-
/O.EXT.KSTO.WW.Y.0023.211222T0600Z-211223T0000Z/
/O.CON.KSTO.WS.W.0011.211223T0000Z-211227T0000Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
350 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING
TO 4 PM PST WEDNESDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO
4 PM PST SUNDAY...

* WHAT...Heavy snow expected. Wet snow expected. Travel will be
  very difficult to impossible. Tree branches could fall as well.
  Total snow accumulations of 3 to 4 feet, with localized amounts
  up to 9 feet, are expected. Total wet snow accumulations of 2 to
  4 inches, with localized amounts up to 1-2 feet, are expected
  through Wednesday afternoon.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...For the Winter Storm Warning, 4 PM Wednesday to 4 PM 
  Sunday. For the Winter Weather Advisory, 10 PM today to 4 PM 
  Wednesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Snow will spread south of I-80 after
  midnight today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ014-221430-
/O.EXT.KSTO.WW.Y.0023.211222T0600Z-211223T1200Z/
/O.CON.KSTO.WS.W.0011.211223T1200Z-211227T0000Z/
Burney Basin / Eastern Shasta County-
Including the city of Burney
350 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING
TO 4 AM PST THURSDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM THURSDAY TO
4 PM PST SUNDAY...

* WHAT...Heavy snow expected. Wet snow expected. Travel will be
  very difficult to impossible. Total snow accumulations of 8 to
  12 inches, with localized amounts 2 to 3 feet, are expected.
 
* WHERE...Burney Basin / Eastern Shasta County.

* WHEN...For the Winter Storm Warning, 4 AM Thursday to 4 PM 
  Sunday. For the Winter Weather Advisory, 10 PM today to 4 AM 
  Thursday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

968 
WWUS46 KSTO 220252
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
652 PM PST Tue Dec 21 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds tonight through Sunday. Snow showers will 
spread over northern California tonight and Wednesday with  
heavier snow expected Wednesday night and continuing into the 
weekend. 

Major travel delays and difficult travel conditions are
anticipated later this week. Gusty winds will further reduce 
visibilities during this event with local whiteout conditions 
possible. Holiday travelers should prepare for winter driving 
conditions by packing chains, warm winter clothes, and extra food 
and water.

CAZ013-063-221500-
/O.CON.KSTO.WS.W.0011.211223T1200Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211223T1200Z/
Shasta Lake Area / Northern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Shasta Dam
652 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM THURSDAY TO
4 PM PST SUNDAY...

* WHAT...Wet snow tonight through Wednesday with 1 to 3 inches
  accumulation above 4000 feet, and localized higher amounts.
  Heavier snow Thursday through Sunday with total accumulations of
  8 to 12 inches, and localized amounts up to 3 to 4 feet. Travel
  will be very difficult to impossible over the Holiday weekend
  due to heavy snow and lowering snow levels to 1000 to 1500 feet
  by Sunday. 

* WHERE...Shasta Lake Area / Northern Shasta County and 
  Mountains Southwestern Shasta County to Western Colusa County.

* WHEN...Winter Weather Advisory until 4 AM Thursday. Winter Storm
  Warning 4 AM Thursday to 4 PM Sunday. 

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Wind gusts to 50 mph or higher are possible
  over higher terrain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ068-069-221500-
/O.CON.KSTO.WS.W.0011.211223T0000Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.211222T0600Z-211223T0000Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
652 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 4 PM PST WEDNESDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO
4 PM PST SUNDAY...

* WHAT...Wet snow tonight through Wednesday with 2 to 4 inches
  accumulation above 5000 feet, and localized amounts up to a foot
  over higher elevations. Very heavy snow Thursday through Sunday
  with total accumulations from 3 to 5 feet with localized amounts
  up to 12 feet over higher terrain. Travel will be very difficult
  to impossible over the Holiday weekend due to heavy snow and
  lowering snow levels into the foothills this weekend.  

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...For the Winter Storm Warning, 4 PM Wednesday to 4 PM 
  Sunday. For the Winter Weather Advisory, 10 PM today to 4 PM 
  Wednesday.

* ADDITIONAL DETAILS...Downed trees and power outages are possible
  from damaging wind gusts of 50 to 80 mph, especially over the 
  higher terrain. 
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ014-221500-
/O.CON.KSTO.WS.W.0011.211223T1200Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.211222T0600Z-211223T1200Z/
Burney Basin / Eastern Shasta County-
Including the city of Burney
652 PM PST Tue Dec 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 4 AM PST THURSDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM THURSDAY TO
4 PM PST SUNDAY...

* WHAT...Wet snow through Wednesday with accumulations up to 2
  inches above 4000 feet, and localized higher amounts up to a
  foot over higher elevations. Heavier snow Thursday through 
  Sunday with total accumulations of 8 to 12 inches, and localized
  amounts up to 3 feet. Travel will be very difficult to 
  impossible over the Holiday weekend due to heavy snow and 
  lowering snow levels. 

* WHERE...Burney Basin / Eastern Shasta County.

* WHEN...For the Winter Storm Warning, 4 AM Thursday to 4 PM 
  Sunday. For the Winter Weather Advisory, 10 PM today to 4 AM 
  Thursday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

461 
WWUS46 KSTO 221035
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
235 AM PST Wed Dec 22 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through Sunday. Snow showers continue to spread
over northern California today with rising snow levels. Heavier 
snow expected tonight and Thursday tapering to showers on Friday.
The next heavier round of snow will occur late Friday night 
through Saturday with very low snow levels. Generally 2000 to 3500
feet but lowering by Sunday morning to 1000 to 2500 feet. Showers
are expected to continue over the mountains between the two 
systems and on Sunday. The potential for more significant snowfall
is forecast for Sunday night and Monday.

Major travel delays and difficult travel conditions are
anticipated later this week. Gusty winds will further reduce
visibilities during this event with local whiteout conditions
possible. Holiday travelers should prepare for winter driving
conditions by packing chains, warm winter clothes, and extra food
and water.

CAZ013-014-063-230000-
/O.EXT.KSTO.WS.W.0011.211225T0000Z-211227T0000Z/
/O.EXT.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
235 AM PST Wed Dec 22 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST FRIDAY...
...WINTER STORM WARNING NOW IN EFFECT FROM 4 PM FRIDAY TO 4 PM
PST SUNDAY...

* WHAT...Additional snow accumulations of 2 to 5 inches, with
  localized amounts up to 3 feet, are expected through Friday
  above 4500 feet. Then heavy snow expected with very low snow 
  levels. Plan on difficult travel conditions. Total additional 
  snow accumulations of 5 to 10 inches, with localized amounts up 
  to 3 feet, are expected through Sunday. 
 

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 PM Friday to 4 PM 
  Sunday. For the Winter Weather Advisory, until 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Wind gusts to 50 mph or higher are possible
  over higher terrain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ068-069-230000-
/O.EXT.KSTO.WS.W.0011.211223T0500Z-211227T0000Z/
/O.EXT.KSTO.WW.Y.0023.000000T0000Z-211223T0500Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
235 AM PST Wed Dec 22 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 PM PST THIS
EVENING...
...WINTER STORM WARNING NOW IN EFFECT FROM 9 PM THIS EVENING TO
4 PM PST SUNDAY...

* WHAT...Additional wet snow accumulations of 3 to 6 inches, with
  localized amounts up to 21 inches, are expected through this
  evening. Mainly above 6500 feet with lessor amounts this morning
  down to around 4500 feet. Then heavy snow expected. Travel will
  become very difficult to impossible. Tree branches could fall as
  well. Total additional snow accumulations of 2 to 5 feet, with
  localized amounts up to 9 feet, are expected through Sunday.
  Lowering snow levels this weekend into the foothills.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...For the Winter Storm Warning, 9 PM today to 4 PM 
  Sunday. For the Winter Weather Advisory, until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Downed trees and power outages are possible
  from damaging wind gusts of 50 to 70 mph, especially over the 
  higher terrain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

276 
WWUS46 KSTO 222312
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
312 PM PST Wed Dec 22 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through Sunday. Snow showers continue to
spread over northern California this afternoon with rising snow 
levels. Heavier snow expected tonight and Thursday tapering to 
showers on Friday. The next heavier round of snow will occur late 
Friday night through Saturday with low snow levels. Generally 2000
to 3500 feet but lowering by Sunday morning to 1000 to 2500 feet.
Showers are expected to continue over the mountains between the 
two systems and on Sunday. The potential for more significant 
snowfall is forecast for Sunday night and Monday.

Major travel delays and difficult travel conditions are
anticipated later this week. Gusty winds will further reduce
visibilities during this event with local whiteout conditions
possible. Holiday travelers should prepare for winter driving
conditions by packing chains, warm winter clothes, and extra food
and water.

CAZ013-014-063-231430-
/O.CON.KSTO.WS.W.0011.211225T0000Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
312 PM PST Wed Dec 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
FRIDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM FRIDAY TO
4 PM PST SUNDAY...

* WHAT...Additional wet snow accumulations of 2 to 5 inches, with
  localized amounts up to 3 feet, locally higher, are expected
  through Friday evening above 4500 feet. Then, heavy snow
  expected. Plan on difficult travel conditions. Total snow
  accumulations of 4 to 8 inches, with localized amounts up to 2-3
  feet, locally higher, are expected.
 
* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 PM Friday to 4 PM 
  Sunday. For the Winter Weather Advisory, until 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

CAZ068-069-231430-
/O.CON.KSTO.WS.W.0011.211223T0500Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211223T0500Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
312 PM PST Wed Dec 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 4 PM PST SUNDAY...

* WHAT...Additional wet snow accumulations of 2 to 4 inches, with
  localized amounts up to a foot, are expected through this
  evening. Then, heavy snow expected. Travel will be very 
  difficult to impossible, including during the morning commute on
  Thursday. Tree branches could fall as well. Total snow 
  accumulations of 3 to 5 feet, with localized amounts up to 9 
  feet, are expected. 

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...For the Winter Storm Warning, 9 PM today to 4 PM 
  Sunday. For the Winter Weather Advisory, until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

943 
WWUS46 KSTO 231035
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
235 AM PST Thu Dec 23 2021

...Multiple Winter Storms to Impact Holiday Mountain Travel
through the Weekend...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through Sunday. Rain and snow continue to 
spread over northern California today. Heavier snow expected 
for the western slope today tapering to showers on Friday. The 
next heavier round of snow will occur late Friday night through 
Saturday with low snow levels. Generally 2000 to 3500 feet but 
lowering by Sunday morning to 1000 to 2500 feet. Showers are 
expected to continue over the mountains between the two systems 
and on Sunday. The potential for more significant snowfall is 
forecast for Sunday night and Monday.

Major travel delays and difficult travel conditions are
anticipated later this week. Gusty winds will further reduce
visibilities during this event with local whiteout conditions
possible. Holiday travelers should prepare for winter driving
conditions by packing chains, warm winter clothes, and extra food
and water.

CAZ013-014-063-240000-
/O.CON.KSTO.WS.W.0011.211225T0000Z-211227T0000Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
235 AM PST Thu Dec 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
FRIDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM FRIDAY TO
4 PM PST SUNDAY...

* WHAT...Additional snow accumulations of 2 to 4 inches, with
  localized amounts up to 26 inches, are expected through Friday.
  Then heavy snow expected. Plan on difficult travel conditions.
  Total additional snow accumulations of 5 to 9 inches, with 
  localized amounts up to 34 inches, are expected. 

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 PM Friday to 4 PM 
  Sunday. For the Winter Weather Advisory, until 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ068-069-240000-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211227T0000Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
235 AM PST Thu Dec 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SUNDAY...

* WHAT...Heavy snow higher elevations today. Travel will be very
  difficult to impossible this weekend with snow levels lowering
  into the foothills. Tree branches could fall as well. Additional
  snow accumulations of 2 to 4 feet, with localized amounts up to
  9 feet, are expected through Sunday.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...Until 4 PM Sunday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

885 
WWUS46 KSTO 232129
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
129 PM PST Thu Dec 23 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel 
through Next Week...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through early next week. Rain and snow 
continue over northern California today, becoming more showery on
Friday. The next heavier round of snow will occur late Friday 
night through Saturday with low snow levels. Generally 2000 to 
3500 feet but lowering by Sunday morning to 1000 to 2500 feet,
locally lower. Showers are expected to continue over the 
mountains between the two systems and on Sunday. The potential for
more significant snowfall is forecast for Sunday night and 
Monday, with very low snow possible by Tuesday morning.

Major travel delays and difficult travel conditions are
anticipated through early next week. Gusty winds will further 
reduce visibilities during this event with local whiteout 
conditions possible. Holiday travelers should prepare for winter 
driving conditions by packing chains, warm winter clothes, and 
extra food and water. Foothill locations that do not normally 
receive snow should prepare for winter conditions, especially 
from Sunday morning through Tuesday morning.

CAZ066-067-241400-
/O.EXB.KSTO.WS.W.0011.211226T1200Z-211228T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Paradise and Grass Valley
129 PM PST Thu Dec 23 2021

...WINTER STORM WARNING IN EFFECT FROM 4 AM SUNDAY TO 10 AM PST
TUESDAY ABOVE 1000 FEET...

* WHAT...Moderate to heavy snow expected from 1000 to 2000 feet.
  Travel will be very difficult. Total snow accumulations of 8 to
  12 inches, with localized amounts up to 2 to 4 feet, are
  expected. The highest amounts are expected at or above the 
  upper foothills.

* WHERE...Northeast Foothills/Sacramento Valley and Motherlode.

* WHEN...4 AM Sunday to 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ013-014-063-241400-
/O.EXT.KSTO.WS.W.0011.211225T0000Z-211228T1800Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
129 PM PST Thu Dec 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
FRIDAY...
...WINTER STORM WARNING NOW IN EFFECT FROM 4 PM FRIDAY TO 10 AM
PST TUESDAY ABOVE 1000 FEET...

* WHAT...Additional snow accumulations of up to 2 inches, with
  localized amounts up to 12 inches, are expected through Friday.
  Then heavy snow expected. Snow levels lower to 1000 to 2000 feet
  Sunday morning through Tuesday morning, locally lower. Travel 
  will be very difficult to impossible. Above 1000 feet, total 
  snow accumulations of 11 to 15 inches, with localized amounts up
  to 4 feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 PM Friday to 10 AM 
  Tuesday. For the Winter Weather Advisory, until 4 PM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ068-069-241400-
/O.EXT.KSTO.WS.W.0011.000000T0000Z-211228T1800Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
129 PM PST Thu Dec 23 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow in higher elevations today. Travel will be 
  very difficult to impossible this weekend with snow levels 
  lowering into the foothills Sunday morning. Tree branches could 
  fall as well. Additional snow accumulations of 4 to 6 feet, with
  localized amounts up to 12 feet, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...Until 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

911 
WWUS46 KSTO 241109
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
309 AM PST Fri Dec 24 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel
through Early Next Week...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through early next week. Mountain snow 
showers will continue today with the next heavier round of snow  
occurring this evening through Saturday with lower snow levels. 
Snow levels will generally be 2000 to 3500 feet but will be 
lowering Sunday morning to 1000 to 2500 feet, locally lower. 
Activity will become more showery Saturday night with another 
round of heavy snow Sunday afternoon and Monday, with some 
possible snow accumulation down into the lower foothills (1000
feet) Tuesday morning.

Major travel delays and difficult travel conditions are
anticipated through early next week. Gusty winds will further
reduce visibilities during this event with local whiteout
conditions possible. Holiday travelers should prepare for winter
driving conditions by packing chains, warm winter clothes, and
extra food and water. Foothill locations that do not normally
receive snow should prepare for winter conditions, especially
from Sunday morning through Tuesday morning.

CAZ013-014-063-250000-
/O.CON.KSTO.WS.W.0011.211225T0000Z-211228T1800Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
309 AM PST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 AM PST TUESDAY ABOVE 1000 FEET...

* WHAT...Additional snow accumulations of 2 to 5 inches, are
  expected through Friday afternoon. Then heavy snow expected late
  Friday afternoon into Saturday. Snow levels lower to 1000 to
  2000 feet Sunday morning through Tuesday morning, locally lower.
  Travel will be very difficult to impossible. Above 1000 feet,
  total snow accumulations of 3 to 15 inches, with 1 to 3 feet
  above 3000 feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney Basin
  / Eastern Shasta County and Mountains Southwestern Shasta County
  to Western Colusa County including Interstate 5 north of Redding.

* WHEN...For the Winter Storm Warning, 4 PM today to 10 AM 
  Tuesday. For the Winter Weather Advisory, until 4 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ068-069-250000-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1800Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
309 AM PST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow in higher elevations. Travel will be very
  difficult to impossible this weekend with snow levels lowering
  into the foothills Sunday morning. Tree branches could fall as
  well. Additional snow accumulations of 3 to 6 feet, with 
  localized amounts up to 12 feet, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada including Interstate 80 over Donner Pass,
  Highway 50 over Echo Summit and Highway 88 over Carson Pass.

* WHEN...Until 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ066-067-250000-
/O.CON.KSTO.WS.W.0011.211226T1200Z-211228T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Paradise and Grass Valley
309 AM PST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM SUNDAY TO
10 AM PST TUESDAY ABOVE 1000 FEET...

* WHAT...Moderate to heavy snow expected from 1000 to 3000 feet. 
  Travel will be very difficult. Total snow accumulations of 4 to 
  12 inches, with localized amounts up to 2 to 4 feet, are 
  expected. The highest amounts are expected at or above the upper
  foothills.

* WHERE...Northeast Foothills/Sacramento Valley and Motherlode.

* WHEN...4 AM Sunday to 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

501 
WWUS46 KSTO 242146
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
146 PM PST Fri Dec 24 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel
through Early Next Week...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through early next week. Scattered mountain 
snow showers continue this afternoon with the next heavier round 
of snow occurring this evening through Saturday with lower snow 
levels. Snow levels will generally be 2000 to 3500 feet but will 
be lowering Sunday morning to 1000 to 2500 feet, locally lower. 
Activity will become more showery Saturday night with another 
round of heavy snow Sunday afternoon and Monday, with some 
possible light snow accumulation down into the lower foothills 
(1000 feet) Monday evening into early Tuesday morning.

Major travel delays and difficult travel conditions are
anticipated through early next week. Gusty winds will further
reduce visibilities during this event with local whiteout
conditions possible. Holiday travelers should prepare for winter
driving conditions by packing chains, warm winter clothes, and
extra food and water. Foothill locations that do not normally
receive snow should prepare for wintry conditions, especially 
from Sunday morning through early Tuesday morning.

CAZ013-014-063-251215-
/O.CON.KSTO.WS.W.0011.211225T0000Z-211228T1800Z/
/O.CON.KSTO.WW.Y.0023.000000T0000Z-211225T0000Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
146 PM PST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Additional snow accumulations of 2 inches are expected
  through early this afternoon. Then heavy snow expected late
  Friday afternoon into Saturday. Snow levels lower to 1000 to
  2000 feet Sunday morning through Tuesday morning, locally lower.
  Travel will be very difficult to impossible. Above 1000 feet,
  total snow accumulations of 3 to 15 inches, with 1 to 4 feet 
  above 3000 feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...For the Winter Storm Warning, 4 PM today to 10 AM 
  Tuesday. For the Winter Weather Advisory, until 4 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ068-069-251215-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1800Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
146 PM PST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow in higher elevations. Travel will be very
  difficult to impossible this weekend with snow levels lowering
  into the foothills Sunday morning. Tree branches could fall as
  well. Additional snow accumulations of 3 to 6 feet, with 
  localized amounts up to 12 feet, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope 
  Northern Sierra Nevada.

* WHEN...Until 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ066-067-251215-
/O.CON.KSTO.WS.W.0011.211226T1200Z-211228T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Paradise and Grass Valley
146 PM PST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM SUNDAY TO
10 AM PST TUESDAY ABOVE 1000 FEET...

* WHAT...Moderate to heavy snow expected from 1000 to 3000 feet.
  Travel will be very difficult. Total snow accumulations of 4 to
  10 inches, with localized amounts up to 3 feet, are expected.
  The highest amounts are expected at or above the upper
  foothills.

* WHERE...Northeast Foothills/Sacramento Valley and Motherlode.

* WHEN...4 AM Sunday to 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

932 
WWUS46 KSTO 251038
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
238 AM PST Sat Dec 25 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel
through Early Next Week...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through early next week. Moderate to heavy
snow today. Snow levels will generally be 2000 to 3500 feet but 
will be lowering Sunday morning to 1000 to 2500 feet, locally 
lower. Activity will become more showery tonight with another 
round of heavy snow Sunday afternoon and Monday, with some 
possible light snow accumulation down into the lower foothills 
(1000 feet) Monday evening into early Tuesday morning.

Major travel delays and difficult travel conditions are
anticipated through early next week. Gusty winds will further
reduce visibilities during this event with local whiteout
conditions possible. Holiday travelers should prepare for winter
driving conditions by packing chains, warm winter clothes, and
extra food and water. Foothill locations that do not normally
receive snow should prepare for wintry conditions, especially
from Sunday morning through early Tuesday morning.

CAZ066-067-260000-
/O.EXT.KSTO.WS.W.0011.211226T0600Z-211228T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Paradise and Grass Valley
238 AM PST Sat Dec 25 2021

...WINTER STORM WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST TUESDAY ABOVE 1000 FEET...

* WHAT...Moderate to heavy snow expected from 1000 to 3000 feet.
  Travel will be very difficult. Total snow accumulations of less
  than 6 inches below 2000 feet, 6 to 15 inches above 2000 feet, 
  with localized amounts up to 3 feet, are expected. The highest 
  amounts are expected at or above the upper foothills.

* WHERE...Northeast Foothills/Sacramento Valley and Motherlode.

* WHEN...10 PM today to 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ013-014-063-068-069-260000-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1800Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Shasta Dam and Burney
238 AM PST Sat Dec 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY...

* WHAT...Heavy snow in higher elevations. Travel will be very
  difficult to impossible this weekend with snow levels lowering
  into the foothills Sunday morning. Tree branches could fall as
  well. Additional snow accumulations of 3 to 6 feet, with
  localized amounts up to 10 feet, are expected over the Sierra
  above 3000 feet. Additional snow accumulation for the Coastal
  Range and Shasta County of less than 4 inches below 1500 feet, 4
  to 12 inches above 1500 feet, with localized amounts up to 2 
  feet, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada including Interstate 80 over Donner Pass,
  Highway 50 over Echo Summit and Highway 88 over Carson Pass.
  Shasta Lake Area / Northern Shasta County, Burney Basin /
  Eastern Shasta County and Mountains Southwestern Shasta County
  to Western Colusa County including Interstate 5 north of
  Redding.

* WHEN...Until 10 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

082 
WWUS46 KSTO 252122
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
122 PM PST Sat Dec 25 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel
through Early Next Week...

.A series of winter storms will bring multiple rounds of mountain
snow and gusty winds through early next week. Moderate to heavy
snow will continue this evening. Snow levels will generally be 
2000 to 3500 feet but will be lowering tonight to 1000 to 2000 
feet, locally lower. Activity will become more showery tonight 
with another round of heavy snow late Sunday afternoon and Monday,
with some possible light snow accumulation down into the lower 
foothills (1000 feet) Monday evening into early Tuesday morning.

Major travel delays and difficult travel conditions are
anticipated through early next week. Gusty winds will further
reduce visibilities during this event with local whiteout
conditions possible. Holiday travelers should prepare for winter
driving conditions by packing chains, warm winter clothes, and
extra food and water. Foothill locations that do not normally
receive snow should prepare for wintry conditions, especially
from Sunday morning through early Tuesday morning.

CAZ066-067-261200-
/O.EXT.KSTO.WS.W.0011.211226T0200Z-211228T1200Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Paradise and Grass Valley
122 PM PST Sat Dec 25 2021

...WINTER STORM WARNING NOW IN EFFECT FROM 6 PM THIS EVENING TO
4 AM PST TUESDAY ABOVE 1000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult to 
  impossible, including during the morning commute on Monday. 
  Total snow accumulations of 9 to 13 inches, with localized 
  amounts up to 45 inches, are expected near 3000 feet.

* WHERE...Northeast Foothills/Sacramento Valley and Motherlode.

* WHEN...6 PM today to 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Snow levels will lower into the foothills
  early this evening then down to around 1000 feet after midnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ013-014-063-068-069-261200-
/O.EXT.KSTO.WS.W.0011.000000T0000Z-211228T1200Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Shasta Dam and Burney
122 PM PST Sat Dec 25 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult to
  impossible. Tree branches could fall as well. Additional snow
  accumulations of 3 to 4 feet, with localized amounts up to 9
  feet, are expected above 3000 feet. Additional snow accumulation
  for the Coastal Range and Shasta County of less than 2 inches 
  below 1500 feet, 4 to 12 inches above 1500 feet, with localized 
  amounts up to 2 feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County, Mountains Southwestern Shasta 
  County to Western Colusa County, Western Plumas County/Lassen 
  Park and West Slope Northern Sierra Nevada.

* WHEN...Until 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

205 
WWUS46 KSTO 261036
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
236 AM PST Sun Dec 26 2021

...Multiple Winter Storms to Impact Mountain and Foothill Travel
through Early This Week...

.Unsettled weather will continue into early this week with 
additional mountain snow and gusty winds. We will see another 
round of heavy snow later this afternoon into Monday with snow 
showers lingering into Monday night. Snow levels will generally be
between 1500 and 2500 feet lowering Monday afternoon into the 
evening down to 1000 feet, locally lower over Shasta County and 
down to a few 100 feet Monday night.

Major travel delays and difficult to impossible travel conditions
are anticipated through early this week. Gusty winds will further
reduce visibilities during this event with local whiteout 
conditions possible. Holiday travelers should prepare for winter 
driving conditions by packing chains, warm winter clothes, and 
extra food and water. Foothill locations that do not normally 
receive snow should prepare for wintry conditions.

CAZ013-014-063-066>069-270000-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1200Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Northeast Foothills/Sacramento Valley-Motherlode-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Shasta Dam, Burney, Paradise, 
and Grass Valley
236 AM PST Sun Dec 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult to
  impossible. Tree branches could fall as well. Additional snow
  accumulations in the Sierra of 3 to 5 feet, with localized
  amounts up to 8 feet, are expected above 3000 feet, 6 to 18
  inches between 2000 and 3000 feet with localized amounts up to 
  3 feet, and less than 6 inches below 2000 feet. Additional snow 
  accumulation for the Coastal Range and Shasta County of less 
  than 2 inches below 1500 feet, 4 to 12 inches above 1500 feet, 
  with localized amounts up to 2 feet, are expected.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada including Interstate 80 over Donner Pass,
  Highway 50 over Echo Summit and Highway 88 over Carson Pass.
  Shasta Lake Area / Northern Shasta County, Burney Basin /
  Eastern Shasta County and Mountains Southwestern Shasta County
  to Western Colusa County including Interstate 5 north of
  Redding.

* WHEN...Until 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

794 
WWUS46 KSTO 262002
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1202 PM PST Sun Dec 26 2021

...Winter Storm to Impact Mountain and Foothill Travel into
Tuesday...

.Unsettled weather will continue early this week with additional 
mountain snow and gusty winds. We will see another round of heavy 
snow later this afternoon into Monday with snow showers lingering 
into Monday night. Snow levels will generally be between 1500 and 
2500 feet lowering Monday morning down to 1000 feet, locally 
lower over Shasta County.

Major travel delays and difficult to impossible travel conditions
are anticipated through early this week. Gusty winds will further
reduce visibilities during this event with local whiteout
conditions possible. Holiday travelers should prepare for winter
driving conditions by packing chains, warm winter clothes, and
extra food and water. Foothill locations that do not normally
receive snow should prepare for wintry conditions.

CAZ013-014-063-271200-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1200Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the cities of Shasta Dam and Burney
1202 PM PST Sun Dec 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 1000 FEET...

* WHAT...Heavy snow. Plan on difficult travel conditions. 
  Additional snow accumulations of 3 to 6 inches, with localized 
  amounts up to 2 feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...Until 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ066>069-271200-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T1200Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Paradise and Grass Valley
1202 PM PST Sun Dec 26 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 1500 FEET...

* WHAT...Heavy snow. Travel will be very difficult to impossible.
  Additional snow accumulations of 1 to 3 feet, with localized
  amounts up to 5 feet, are expected. Lessor amounts down to 1500
  feet, locally lower.

* WHERE...Northeast Foothills/Sacramento Valley, Motherlode, 
  Western Plumas County/Lassen Park and West Slope Northern 
  Sierra Nevada.

* WHEN...Until 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Snow levels will mainly be above 2000 feet
  tonight but lower to around 1000 feet on Monday where minor 
  accumulations may occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

949 
WWUS46 KSTO 271038
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
238 AM PST Mon Dec 27 2021

...Winter Storm to Impact Mountain and Foothill Travel into
This Evening...

.Moderate to heavy mountain snow will continue this morning with
snow showers continuing into this evening. Snow levels will 
generally be between 1500 and 2500 feet lowering Monday afternoon 
down to 1000 feet, locally lower over Shasta County.

Major travel delays and difficult to impossible travel conditions
will continue today. Gusty winds will further reduce visibilities
with local whiteout conditions possible. Travelers should prepare
for winter driving conditions by packing chains, warm winter 
clothes, and extra food and water. Foothill locations that do not 
normally receive snow should prepare for wintry conditions.

CAZ013-014-063-271800-
/O.EXT.KSTO.WS.W.0011.000000T0000Z-211227T1800Z/
Shasta Lake Area / Northern Shasta County-
Burney Basin / Eastern Shasta County-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Shasta Dam
238 AM PST Mon Dec 27 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 1000 FEET...

* WHAT...Snow occurring. Plan on difficult travel conditions. 
  Additional snow accumulations of 1 to 3 inches are expected.

* WHERE...Shasta Lake Area / Northern Shasta County, Burney 
  Basin / Eastern Shasta County and Mountains Southwestern 
  Shasta County to Western Colusa County.

* WHEN...Until 10 AM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

CAZ066>069-280500-
/O.EXT.KSTO.WS.W.0011.000000T0000Z-211228T0500Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Paradise and Grass Valley
238 AM PST Mon Dec 27 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 PM PST THIS EVENING
ABOVE 1000 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult to
  impossible. Additional snow accumulations of 3 to 15 inches,
  with localized amounts up to 2 feet, are expected.

* WHERE...Northeast Foothills/Sacramento Valley, Motherlode, 
  Western Plumas County/Lassen Park and West Slope Northern 
  Sierra Nevada.

* WHEN...Until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

485 
WWUS46 KSTO 271833
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1033 AM PST Mon Dec 27 2021

...Winter Storm to Impact Mountain and Foothill Travel into This
Evening...

.Moderate to heavy mountain snow will continue into this afternoon with
snow showers continuing into this evening. Snow levels will 
generally be between 1500 and 2500 feet lowering Monday afternoon 
down to 1000 feet, locally lower over Shasta County.

Major travel delays and difficult to impossible travel conditions
will continue today. Travelers should prepare for winter driving 
conditions by packing chains, warm winter clothes, and extra food 
and water.

CAZ066>069-280500-
/O.CON.KSTO.WS.W.0011.000000T0000Z-211228T0500Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Paradise and Grass Valley
1033 AM PST Mon Dec 27 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING ABOVE 1000 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the evening commute. Additional
  snow accumulations of 2 to 6 inches, with localized amounts up
  to 10 inches, are expected.

* WHERE...Northeast Foothills/Sacramento Valley, Motherlode, 
  Western Plumas County/Lassen Park and West Slope Northern 
  Sierra Nevada.

* WHEN...Until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

114 
WWUS46 KSTO 280507
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
907 PM PST Mon Dec 27 2021

...Winter Storm to Impact Mountain and Foothill Travel into
Thursday...

Light mountain snow will continue into Tuesday evening. Another
round of moderate to heavy snow will be possible Tuesday night and
Wednesday. Snow levels will generally be above 2000 feet, locally
lower.

CAZ067-069-281500-
/O.EXP.KSTO.WS.W.0011.000000T0000Z-211228T0500Z/
/O.NEW.KSTO.WW.Y.0024.211228T0507Z-211229T0600Z/
/O.NEW.KSTO.WS.A.0013.211229T0600Z-211230T0000Z/
Motherlode-West Slope Northern Sierra Nevada-
Including the city of Grass Valley
907 PM PST Mon Dec 27 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 PM PST TUESDAY
ABOVE 2000 FEET...
...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON ABOVE 2000 FEET...

* WHAT...Snow occurring above 2000 feet. Heavy snow possible above
  2000 feet. Plan on slippery road conditions, including during
  the evening commute on Tuesday. Above 2000 feet, additional snow
  accumulations of 2 to 4 inches, with localized amounts up to 5
  inches, expected. Above 2000 feet, total snow accumulations of 
  3 to 6 inches, with localized amounts up to 10 inches, are 
  possible.

* WHERE...Motherlode and West Slope Northern Sierra Nevada.

* WHEN...For the Winter Weather Advisory, until 10 PM Tuesday. 
  For the Winter Storm Watch, from Tuesday evening through 
  Wednesday afternoon.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times. Significant reductions in visibility are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

CAZ066-068-281500-
/O.EXP.KSTO.WS.W.0011.000000T0000Z-211228T0500Z/
/O.NEW.KSTO.WW.Y.0024.211228T0507Z-211229T0600Z/
Northeast Foothills/Sacramento Valley-
Western Plumas County/Lassen Park-
Including the city of Paradise
907 PM PST Mon Dec 27 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 PM PST TUESDAY
ABOVE 2000 FEET...

* WHAT...Snow occurring. Plan on slippery road conditions, 
  including during the evening commute on Tuesday. Additional 
  snow accumulations of 1 to 3 inches, with localized amounts up 
  to 6 inches, are expected.

* WHERE...Northeast Foothills/Sacramento Valley and Western 
  Plumas County/Lassen Park.

* WHEN...Until 10 PM Tuesday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

Area Forecast Discussion
National Weather Service Sacramento CA
248 AM PST Mon Dec 20 2021

.SYNOPSIS...
Cold nights with Valley fog and frost continue into tomorrow.
Rain and snow chances return early this week, becoming widespread
by early Tuesday. A series of storms will continue this threat
through the week into the holiday weekend with little break in
precipitation expected. Mountain travel will likely be
significantly impacted at times by moderate to heavy snow. Periods
of gusty winds are also possible across the area.

&&

.DISCUSSION...
Some patches of fog this morning in the valley otherwise the low
clouds seem to be preventing any widespread fog from forming.
Another cold day in store for the valley with highs only expected
in the upper 40s but at least a little warmer than yesterday.

The focus will shift Tuesday afternoon to an incoming storm. The
system has slowed down a little so have adjusted the timing back a
little with rain/snow now forecast to move along the coastal range
Tuesday afternoon and then spread to the western slope Tuesday
night. Dry air in place with low dewpoints will likely bring snow
down to lower levels, possibly down to 3500 feet over parts of
Shasta County and 4500 feet for the western slopes of the Sierra
Nevada. The initial rain/snow on Tuesday is expected to be light
but increase in intensity on Wednesday. We will likely need a
Winter Weather Advisory for this time period for the mountains.
Warmer and moist air will move over the region Wednesday night to
help raise snow levels some before lowering Thursday and Thursday
night. More significant rain/snow is expected to arrive on
Thursday and Thursday night with lower snow levels expected.
Wednesday night or Thursday depending on location is when the
heavier snows will start and travel conditions will deteriorate
significantly.

&&
.EXTENDED DISCUSSION (Friday THROUGH Monday)...

Four different waves of precipitation are forecast to move
through during the extended period, one each day. A trough will
remain over the west coast with shortwaves developing along the
upper backside of the trough and rotating into the region. Each
one of these waves will have the potential to bring significant
rainfall to the interior. Snow levels lower on Friday down to 1500
to 2500 feet. While snow levels may fluctuate at times in general
expect low snow levels to remain through the weekend and a
potential for significant snow down into the motherlode and over
I-5 north of Redding.

&&

.AVIATION...

MVFR/IFR/LIFR conditions in the lower elevations due to low cigs
and reduced visbys. FG/BR possible through 18z in the Valley and
Delta, followed by visbys improving to VFR but with ontinued low
cigs today. Winds remain under 10 knots. EK

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Tuesday evening through Sunday afternoon
for West Slope Northern Sierra Nevada-Western Plumas
County/Lassen Park.

Winter Storm Watch from Tuesday afternoon through Sunday
afternoon for Burney Basin / Eastern Shasta County-Mountains
Southwestern Shasta County to Western Colusa County-Shasta Lake
Area / Northern Shasta County.

&&