Alert archive / California / Winter Storm Warnings in 2021

Winter Storm Warning 7, NWS Sacramento, CA

October 23, 2021

NWS Sacramento, CA issued this winter storm warning at Oct 23, 2021, 3:42 PM PDT. It took effect at Oct 24, 2021, 11:00 PM PDT. It was in force for 23 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
Oct 23, 2021, 3:42 PM PDT (22:42 UTC)
In effect from
Oct 24, 2021, 11:00 PM PDT
Expired
Oct 25, 2021, 9:35 PM PDT
In force
23 hr
Issued by
NWS Sacramento, CA

The text

As transmitted.

608 
WWUS46 KSTO 232242
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
342 PM PDT Sat Oct 23 2021

...Winter storm will bring heavy mountain snow Sunday night
through early Tuesday morning...

.A strong winter storm will impact the northern Sierra late
Sunday night into early Tuesday morning. Snow levels will quickly
fall from above pass level Sunday evening to around 5,500 to 
6,500 feet by Monday morning. Periods of heavy snowfall and gusty 
winds will create hazardous travel conditions with very slippery
roads and poor visibility in blowing snow. Expect mountain travel
impacts such as chain controls and travel delays, as well as 
lingering issues from the heavy rain prior to the lowering of snow
levels.

CAZ068-069-241500-
/O.UPG.KSTO.WS.A.0007.211025T0600Z-211026T1200Z/
/O.NEW.KSTO.WS.W.0007.211025T0600Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
342 PM PDT Sat Oct 23 2021

...WINTER STORM WARNING IN EFFECT FROM 11 PM SUNDAY TO 11 PM PDT
MONDAY ABOVE 6000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult,
  including during the morning commute on Monday. Damage to trees
  and power lines is possible. Total snow accumulations of 6 to 14
  inches, with localized amounts up to 3 feet above 7000 feet, 
  are expected.

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

* WHEN...11 PM Sunday to 11 PM Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times in blowing snow. Lingering flood-related 
  impacts 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.

$$
5 follow-up statements
605 
WWUS46 KSTO 240725
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1225 AM PDT Sun Oct 24 2021

...Winter storm will bring heavy mountain snow Sunday night
through early Tuesday morning...

.A strong winter storm will impact the northern Sierra late
Sunday night into early Tuesday morning. Snow levels will quickly
fall from above pass level Sunday evening to around 5,500 to
6,500 feet by Monday morning. Periods of heavy snowfall and gusty
winds will create hazardous travel conditions with very slippery
roads and poor visibility in blowing snow. Expect mountain travel
impacts such as chain controls and travel delays, as well as
lingering issues from the heavy rain prior to the lowering of
snow levels.

CAZ068-069-250600-
/O.CON.KSTO.WS.W.0007.211025T0600Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
1225 AM PDT Sun Oct 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM PDT MONDAY ABOVE 6000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult,
  including during the morning commute on Monday. Damage to trees
  and power lines is possible. Total snow accumulations of 6 to 14
  inches, with localized amounts up to 3 feet above 7000 feet, 
  are expected.

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

* WHEN...11 PM today to 11 PM Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times in blowing snow. Lingering flood-related 
  impacts 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.

$$
557 
WWUS46 KSTO 242146
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
246 PM PDT Sun Oct 24 2021

...Winter storm will bring heavy mountain snow tonight through 
early Tuesday morning...

.A strong winter storm will impact the northern Sierra late
tonight into early Tuesday morning. Snow levels will quickly fall
from above pass level this evening to around 5,500 to 6,500 feet 
by Monday morning. Periods of heavy snowfall and gusty winds will 
create hazardous travel conditions with very slippery roads and 
poor visibility in blowing snow. Expect mountain travel impacts 
such as chain controls and travel delays, as well as lingering 
issues from the heavy rain prior to the lowering of snow levels.

CAZ068-069-251500-
/O.CON.KSTO.WS.W.0007.211025T0600Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
246 PM PDT Sun Oct 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM PDT MONDAY ABOVE 6000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult,
  including during the morning commute on Monday. Damage to trees
  and power lines is possible. Total snow accumulations of 10 to
  20 inches, with 2 to 4 feet above 7000 feet, are expected.

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

* WHEN...11 PM today to 11 PM Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times in blowing snow. Lingering flood-related 
  impacts 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.

$$
312 
WWUS46 KSTO 251005
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
305 AM PDT Mon Oct 25 2021

...Winter storm will bring heavy mountain snow through early 
Tuesday morning...

.A strong winter storm will impact the northern Sierra into
tonight. Snow levels have lowered below pass levels with heavy 
snow occurring through the passes. The snow level will lower to 
around 5000 to 6000 feet this morning. Periods of heavy snowfall 
and gusty winds will create hazardous travel conditions with very 
slippery roads and poor visibility in blowing snow. Expect 
mountain travel impacts such as chain controls and travel delays, 
as well as lingering issues from the heavy rain prior to the 
lowering of snow levels.

CAZ068-069-252300-
/O.CON.KSTO.WS.W.0007.000000T0000Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
305 AM PDT Mon Oct 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING ABOVE 6000 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult.
  Additional snow accumulations of 1 to 2 feet, with localized
  amounts up to 3 feet, are expected.

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

* WHEN...Until 11 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.

$$
534 
WWUS46 KSTO 252148
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
248 PM PDT Mon Oct 25 2021


CAZ068-069-260600-
/O.CON.KSTO.WS.W.0007.000000T0000Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
248 PM PDT Mon Oct 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING ABOVE 6000 FEET...

* WHAT...Snow showers occurring. Plan on difficult travel 
  conditions, including during the evening commute. Additional 
  snow accumulations of 1 to 5 inches are expected.

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

* WHEN...Until 11 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.

$$
426 
WWUS46 KSTO 260435
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
935 PM PDT Mon Oct 25 2021

CAZ068-069-260545-
/O.CAN.KSTO.WS.W.0007.000000T0000Z-211026T0600Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
935 PM PDT Mon Oct 25 2021

...WINTER STORM WARNING IS CANCELLED...

Local snow showers to snow flurries persist at this hour but are 
light in nature and expected to continue to decrease. Therefore, 
the Winter Storm Warning has been cancelled.

$$

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.