Alert archive / California / Winter Storm Warnings in 2021

Winter Storm Warning 1, NWS Sacramento, CA

January 2, 2021

NWS Sacramento, CA issued this winter storm warning at Jan 2, 2021, 1:30 PM PST. It took effect at Jan 4, 2021, 4:00 AM PST. It was in force for 22 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
Jan 2, 2021, 1:30 PM PST (21:30 UTC)
In effect from
Jan 4, 2021, 4:00 AM PST
Expired
Jan 5, 2021, 1:30 AM PST
In force
22 hr
Issued by
NWS Sacramento, CA

The text

As transmitted.

246 
WWUS46 KSTO 022130
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
130 PM PST Sat Jan 2 2021

...Winter Storm Expected Monday Through Monday Night...

.A winter storm will bring periods of heavy snow and strong winds
across the mountains of western Plumas County and the western
Sierra Nevada Monday through Monday night. The heaviest snow is
expected Monday afternoon and evening for elevations above 5500 
feet with light accumulation possible down to 4000 to 4500 feet. 
Hazardous mountain travel conditions are anticipated. If traveling
in the mountains, carry chains, extra warm clothing and food, and
be prepared for significant travel delays. Another winter storm 
is possible mid- week which could also impact mountain travel.

CAZ068-069-031300-
/O.UPG.KSTO.WS.A.0009.210104T1200Z-210105T1200Z/
/O.NEW.KSTO.WS.W.0001.210104T1200Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
130 PM PST Sat Jan 2 2021

...WINTER STORM WARNING IN EFFECT FROM 4 AM MONDAY TO 4 AM PST
TUESDAY ABOVE 5500 FEET...

* WHAT...Heavy snow and strong winds possible. Total snow
  accumulation of 8 to 18 inches, with localized amounts up to 2 
  feet are possible. Plan on difficult travel conditions. Damage 
  to trees and power lines may occur as well. 

* WHERE...Western Plumas County including Lassen National Park and
  the west slopes of the Northern Sierra Nevada. This includes
  Interstate 80 over Donner Pass, Highway 50 over Echo Summit, and
  Highway 88 over Carson Pass.

* WHEN...From Monday morning through late Monday night. Heaviest
  snow expected Monday afternoon and evening. 

* 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.

$$
5 follow-up statements
235 
WWUS46 KSTO 031100
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
300 AM PST Sun Jan 3 2021

...Winter Storm Expected Monday Through Monday Night...

.A winter storm will bring periods of heavy snow and strong winds
across the mountains of western Plumas County and the western
Sierra Nevada Monday through Monday night. The heaviest snow is
expected Monday afternoon and evening for elevations above
5500 feet with light accumulation possible down to 4000 to
4500 feet. Hazardous mountain travel conditions are anticipated.
If traveling in the mountains, carry chains, extra warm clothing
and food, and be prepared for significant travel delays. Another
winter storm is possible mid-week which could also impact 
mountain travel.

CAZ068-069-040000-
/O.CON.KSTO.WS.W.0001.210104T1200Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
300 AM PST Sun Jan 3 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM MONDAY TO
4 AM PST TUESDAY ABOVE 5500 FEET...

* WHAT...Heavy snow and strong wind expected. Travel will be very
  difficult with white out conditions possible at times. Damage to
  trees and power lines could occur. Total snow accumulations of 8
  to 16 inches, with localized amounts up to 2 feet, are expected.

* WHERE...Western Plumas County including Lassen National Park and
  the west slopes of the Northern Sierra Nevada. This includes
  Interstate 80 over Donner Pass, Highway 50 over Echo Summit, and
  Highway 88 over Carson Pass.

* WHEN...4 AM Monday to 4 AM Tuesday. Heaviest snow is expected
  Monday afternoon into evening.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Wind gusts to 60 mph or greater are 
  possible over higher elevations Monday.

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.

$$
285 
WWUS46 KSTO 032250
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
250 PM PST Sun Jan 3 2021

...Winter Storm Expected Monday Through Monday Night...

.A winter storm will bring periods of heavy snow and strong winds
across the mountains of western Plumas County and the western
Sierra Nevada Monday into Monday night. The heaviest snow is 
expected Monday afternoon and evening for elevations above 5500 
feet with light accumulation possible down to 5000 feet. 
Hazardous mountain travel conditions are anticipated. If traveling
in the mountains, carry chains, extra warm clothing and food, and
be prepared for significant travel delays. Another winter storm 
is possible mid-week which could also impact mountain travel.

CAZ068-069-041300-
/O.CON.KSTO.WS.W.0001.210104T1200Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
250 PM PST Sun Jan 3 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM MONDAY TO
4 AM PST TUESDAY ABOVE 5500 FEET...

* WHAT...Heavy snow and strong wind expected. Travel will be very
  difficult with white out conditions possible at times. Damage to
  trees and power lines could occur. Total snow accumulations of 5 
  to 16 inches, with localized amounts up to 2 feet, are expected.

* WHERE...Western Plumas County including Lassen National Park 
  and the west slopes of the Northern Sierra Nevada. This 
  includes Interstate 80 over Donner Pass, Highway 50 over Echo 
  Summit, and Highway 88 over Carson Pass.

* WHEN...4 AM Monday to 4 AM Tuesday. Heaviest snow is expected 
  Monday afternoon into evening.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times. Wind gusts to 60 mph or greater are 
  possible over higher elevations Monday.

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.

$$
872 
WWUS46 KSTO 041119
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
319 AM PST Mon Jan 4 2021

...Winter Storm Expected Today and Tonight...

.A strong Pacific storm will bring periods of heavy snow and 
strong winds across the mountains of western Plumas County and the
West Slope of the Sierra Nevada today and into tonight. The 
heaviest snow is expected from late Monday morning and into the 
early evening for elevations above 5500 feet. Light accumulations 
are possible down to 5000 feet. Hazardous mountain travel 
conditions are anticipated. If traveling in the mountains, carry 
chains, extra warm clothing and food, and be prepared for 
significant travel delays. Another winter storm is possible mid- 
week which could also impact mountain travel.

CAZ068-069-041930-
/O.CON.KSTO.WS.W.0001.210104T1200Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
319 AM PST Mon Jan 4 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 5500 FEET...

* WHAT...Periods of heavy snow and strong winds are expected.
  Expect very difficult travel conditions with white out
  conditions at times, mainly from late this morning and into this
  evening. Total snow accumulations of 4 to 7 inches expected at
  lower elevations, and 12 to 18 inches with localized amounts up
  to 2 feet expected at higher elevations, above 6500 feet. 

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

* WHEN...Through 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Damage to trees and power lines is
  possible.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for wet 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.

$$
550 
WWUS46 KSTO 041911
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1111 AM PST Mon Jan 4 2021

...Winter Storm Expected Today and Tonight...

.A strong Pacific storm will bring periods of heavy snow and
strong winds across the mountains of western Plumas County and
the West Slope of the Sierra Nevada today and into tonight. The
heaviest snow is expected from late Monday morning and into the
early evening for elevations above 5500 feet. Light accumulations
are possible down to 5000 feet. Hazardous mountain travel
conditions are anticipated. If traveling in the mountains, carry
chains, extra warm clothing and food, and be prepared for
significant travel delays. Another winter storm is possible mid-
week which could also impact mountain travel.

CAZ068-069-051200-
/O.CON.KSTO.WS.W.0001.000000T0000Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
1111 AM PST Mon Jan 4 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY
ABOVE 5500 FEET...

* WHAT...Periods of heavy snow and strong winds are expected. 
  Expect very difficult travel conditions with white out 
  conditions at times, mainly from late this morning and into 
  this evening. Total snow accumulations of 4 to 7 inches 
  expected at lower elevations, and 12 to 18 inches with 
  localized amounts up to 2 feet expected at higher elevations, 
  above 6500 feet.

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

* WHEN...Through 4 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times. Damage to trees and power lines is 
  possible.

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.

$$
991 
WWUS46 KSTO 050930
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
130 AM PST Tue Jan 5 2021

CAZ068-069-051030-
/O.CAN.KSTO.WS.W.0001.000000T0000Z-210105T1200Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
130 AM PST Tue Jan 5 2021

...WINTER STORM WARNING IS CANCELLED...

Snow has ended over the Sierra. Roads may still have ice and snow
on them so motorists should take it slow early this morning. 

$$

Nearby

Winter Storm Warnings in California, 2021Every winter storm warning in 2021

Sources

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