Alert archive / California / Winter Storm Warnings in 2021

Winter Storm Warning 4, NWS Sacramento, CA

March 8, 2021

NWS Sacramento, CA issued this winter storm warning at Mar 8, 2021, 2:25 PM PST. It took effect at Mar 8, 2021, 4:00 PM PST. It was in force for 51 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
Mar 8, 2021, 2:25 PM PST (22:25 UTC)
In effect from
Mar 8, 2021, 4:00 PM PST
Expired
Mar 10, 2021, 7:00 PM PST
In force
51 hr
Issued by
NWS Sacramento, CA

The text

As transmitted.

686 
WWUS46 KSTO 082225
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
225 PM PST Mon Mar 8 2021

...Mountain Travel Impacts due to Winter Storm through 
Wednesday...

.A Pacific storm system will bring periods of heavy snow to the 
mountains and upper foothills through Wednesday evening. Snow 
began today across the northern mountains and will spread south 
into the northern Sierra Nevada on Tuesday into Wednesday. Up to 
1 to 2 feet of snow is possible down to 2500 to 3000 feet with 
lighter accumulation possible at lower elevations. Travel impacts 
will likely become more extensive across the northern mountains by
this evening, and across the northern Sierra Tuesday afternoon 
and night.

CAZ013-091600-
/O.UPG.KSTO.WW.Y.0012.210309T0000Z-210310T1200Z/
/O.NEW.KSTO.WS.W.0004.210309T0000Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
225 PM PST Mon Mar 8 2021

...WINTER STORM WARNING IN EFFECT UNTIL 10 AM PST WEDNESDAY ABOVE
2500 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult to
  impossible. Total snow accumulations of 6 to 15 inches, with up
  to 2 feet over higher elevations, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County including
  Interstate 5 north of Redding.

* WHEN...4 PM today to 10 AM Wednesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times due to gusty winds.

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.

$$

CAZ068-091600-
/O.UPG.KSTO.WS.A.0003.210309T2000Z-210311T0200Z/
/O.NEW.KSTO.WS.W.0004.210309T1700Z-210311T0300Z/
Western Plumas County/Lassen Park-
225 PM PST Mon Mar 8 2021

...WINTER STORM WARNING IN EFFECT FROM 9 AM TUESDAY TO 7 PM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult to
  impossible. Total snow accumulations of 1 to 2 feet, with 
  locally higher amounts over peaks, are expected.

* WHERE...Western Plumas County/Lassen Park.

* WHEN...9 AM Tuesday to 7 PM Wednesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times due to gusty winds.

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.

$$

CAZ069-091600-
/O.UPG.KSTO.WS.A.0003.210309T2000Z-210311T0200Z/
/O.NEW.KSTO.WS.W.0004.210309T2000Z-210311T0300Z/
West Slope Northern Sierra Nevada-
225 PM PST Mon Mar 8 2021

...WINTER STORM WARNING IN EFFECT FROM NOON TUESDAY TO 7 PM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow expected. Travel will be very difficult to
  impossible. Total snow accumulations of 1 to 2 feet, with
  locally higher amounts, are expected.

* WHERE...West Slope Northern Sierra Nevada including Interstate
  80 over Donner Pass, Highway 50 over Echo Summit, and Highway 88
  over Carson Pass.

* WHEN...Noon Tuesday to 7 PM Wednesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times due to gusty winds.

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.

$$
6 follow-up statements
749 
WWUS46 KSTO 091030
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
230 AM PST Tue Mar 9 2021

...Significant Mountain Travel Impacts due to Winter Storm 
through Wednesday...

.A Pacific storm system will bring periods of heavy snow to the
mountains and upper foothills through Wednesday evening. Snow will
increase again by this afternoon as the system approaches NorCal.
Up to 1 to 2 feet of snow is possible down to 2500 to 3000 feet 
with lighter accumulation possible at lower elevations. Travel 
impacts will likely become more extensive later today, and
especially tonight.

CAZ068-100000-
/O.EXT.KSTO.WS.W.0004.210309T2000Z-210311T0300Z/
Western Plumas County/Lassen Park-
230 AM PST Tue Mar 9 2021

...WINTER STORM WARNING NOW IN EFFECT FROM NOON TODAY TO 7 PM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow expected. Plan on difficult travel conditions. 
  Total snow accumulations of 10 to 20 inches, with localized 
  amounts up to 2 feet, are expected.

* WHERE...Western Plumas County/Lassen Park.

* WHEN...Noon today to 7 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.

$$

CAZ013-100000-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
230 AM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 2500 FEET...

* WHAT...Periods of heavy snow. Plan on difficult travel
  conditions. Additional snow accumulations of 8 to 16 inches,
  with localized amounts up to 30 inches over the peaks, are 
  expected.

* WHERE...Shasta Lake Area / Northern Shasta County including
  Interstate 5 north of Redding.

* WHEN...Until 10 AM 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.

$$

CAZ069-100000-
/O.CON.KSTO.WS.W.0004.210309T2000Z-210311T0300Z/
West Slope Northern Sierra Nevada-
230 AM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM
PST WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow expected. Plan on difficult travel conditions.
  Total snow accumulations of 12 to 18 inches, with localized
  amounts up to 2 feet, are expected.

* WHERE...West Slope Northern Sierra Nevada including Interstate
  80 over Donner Pass, Highway 50 over Echo Summit, and Highway 88
  over Carson Pass.

* WHEN...Noon today to 7 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.

$$

CAZ063-100000-
/O.NEW.KSTO.WW.Y.0013.210309T1030Z-210310T1200Z/
Mountains Southwestern Shasta County to Western Colusa County-
230 AM PST Tue Mar 9 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST WEDNESDAY
ABOVE 3000 FEET...

* WHAT...Periods of snow. Plan on difficult travel conditions.
  Additional snow accumulations of 5 to 10 inches, with localized
  amounts over a foot, are expected.

* WHERE...Mountains Southwestern Shasta County to Western Colusa 
  County.

* WHEN...Until 4 AM Wednesday.

* 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.

$$
636 
WWUS46 KSTO 092112
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
112 PM PST Tue Mar 9 2021

...Significant Mountain Travel Impacts due to Winter Storm
through Wednesday...

.A Pacific storm system will continue to bring periods of heavy 
snow to the mountains and upper foothills through Wednesday 
evening. Snow will increase again by this afternoon as the system 
approaches NorCal. Up to 1 to 2 feet of snow is possible down to 
2500 to 3000 feet with lighter accumulation possible at lower 
elevations. Intense snow rates of 1 to 2 inch per hour are
possible in stronger cells this afternoon and evening. Travel 
impacts will likely become more extensive later today and 
especially tonight.

CAZ013-101600-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
112 PM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 2500 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult, 
  including during the evening commute. Additional snow 
  accumulations of 8 to 15 inches, with localized amounts up to 2 
  feet, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County including
  Interstate 5 north of Redding.

* WHEN...Until 10 AM 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.

$$

CAZ068-069-101600-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210311T0300Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
112 PM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow occurring. Travel will be very difficult,
  including during the evening commute. Additional snow 
  accumulations of 8 to 18 inches, 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.

* WHEN...Until 7 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.

$$

CAZ063-101200-
/O.CON.KSTO.WW.Y.0013.000000T0000Z-210310T1200Z/
Mountains Southwestern Shasta County to Western Colusa County-
112 PM PST Tue Mar 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Snow occurring. Plan on difficult travel conditions. 
  Additional snow accumulations of 2 to 8 inches are expected.

* WHERE...Mountains Southwestern Shasta County to Western Colusa 
  County.

* WHEN...Until 4 AM Wednesday.

* 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.

$$
827 
WWUS46 KSTO 100612
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1012 PM PST Tue Mar 9 2021

...Significant Mountain Travel Impacts due to Winter Storm
through Wednesday...

.A Pacific storm system will continue to bring periods of heavy
snow to the mountains and upper foothills through Wednesday
evening. Snow will increase again by this afternoon as the system
approaches NorCal. Up to 1 to 2 feet of snow is possible down to
2500 to 3000 feet with lighter accumulation possible at lower
elevations. Intense snow rates of 1 to 2 inch per hour are
possible in stronger cells this afternoon and evening. Travel
impacts will likely become more extensive later today and
especially tonight.

CAZ066-067-101415-
/O.EXA.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the city of Grass Valley
1012 PM PST Tue Mar 9 2021

...WINTER STORM WARNING IN EFFECT UNTIL 10 AM PST WEDNESDAY ABOVE
2500 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 3 to 5 inches, 
  with localized amounts up to 8 inches, are expected.

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

* WHEN...Until 10 AM 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.

$$

CAZ013-101415-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
1012 PM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 2500 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 3 to 5 inches, 
  with localized amounts up to 8 inches, are expected.

* WHERE...Shasta Lake Area / Northern Shasta County.

* WHEN...Until 10 AM 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.

$$

CAZ068-069-101415-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210311T0300Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
1012 PM PST Tue Mar 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 5 to 8 inches, 
  with localized amounts up to 13 inches, are expected.

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

* WHEN...Until 7 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.

$$

CAZ063-101200-
/O.CON.KSTO.WW.Y.0013.000000T0000Z-210310T1200Z/
Mountains Southwestern Shasta County to Western Colusa County-
1012 PM PST Tue Mar 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
WEDNESDAY ABOVE 3000 FEET...

* WHAT...Snow occurring. Plan on slippery road conditions. 
  Additional snow accumulations of up to two inches are expected.

* WHERE...Mountains Southwestern Shasta County to Western Colusa 
  County.

* WHEN...Until 4 AM Wednesday.

* 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.

$$
502 
WWUS46 KSTO 101152
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
352 AM PST Wed Mar 10 2021

...Mountain Travel Impacts due to Winter Storm Continue Today...

.A Pacific storm system will continue to bring periods of moderate snow
to the mountains and upper foothills through this evening. An 
additional 3 to 7 inches, locally higher, of snow is possible 
down to 2500 to 3000 feet with lighter accumulation possible at 
lower elevations. Mountain travel impacts will likely continue 
throughout the day.

CAZ013-101800-
/O.CAN.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
/O.NEW.KSTO.WW.Y.0014.210310T1152Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
352 AM PST Wed Mar 10 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING
ABOVE 2500 FEET...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow occurring. Plan on slippery road conditions. 
  Additional snow accumulations of 3 to 5 inches are expected.

* WHERE...Shasta Lake Area / Northern Shasta County.

* WHEN...Until 10 AM today.

* 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.

$$

CAZ063-101300-
/O.CAN.KSTO.WW.Y.0013.000000T0000Z-210310T1200Z/
Mountains Southwestern Shasta County to Western Colusa County-
352 AM PST Wed Mar 10 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow showers remain possible throughout the day, but accumulations
should remain light. If traveling be mindful that mountain travel
impacts such as chain controls, slick roads, and reduced
visibility due to snow showers may be possible. 

$$

CAZ066-067-101800-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the city of Grass Valley
352 AM PST Wed Mar 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 2500 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 3 to 5 inches are 
  expected.

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

* 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.

$$

CAZ068-069-101800-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210311T0300Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
352 AM PST Wed Mar 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING ABOVE 3000 FEET...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions. Additional snow accumulations of 6 to 9 inches are
  expected. Greatest amounts of new snow accumulation expected
  south of highway 50.

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

* WHEN...Until 7 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.

$$
068 
WWUS46 KSTO 101816
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1016 AM PST Wed Mar 10 2021

...Mountain Travel Impacts due to Winter Storm Continue Today...

.A Pacific storm system will continue to bring periods of
moderate to locally heavy snow to the mountains through this 
evening. An additional 2 to 6 inches of snow is possible, with up 
to 10 inches south of Highway 50. Light accumulation is possible 
down to 2500 feet. Mountain travel impacts will likely continue 
through the evening.

CAZ066-067-101930-
/O.EXP.KSTO.WS.W.0004.000000T0000Z-210310T1800Z/
Northeast Foothills/Sacramento Valley-Motherlode-
Including the city of Grass Valley
1016 AM PST Wed Mar 10 2021

...WINTER STORM WARNING HAS EXPIRED...

Snow levels will be gradually rising today. Any additional
foothill snow accumulation is expected to be light, so the Winter
Storm Warning has been allowed to expire.

$$

CAZ013-101930-
/O.EXP.KSTO.WW.Y.0014.000000T0000Z-210310T1800Z/
Shasta Lake Area / Northern Shasta County-
1016 AM PST Wed Mar 10 2021

...WINTER WEATHER ADVISORY HAS EXPIRED...

Snow levels will be gradually rising today. Any additional
snow accumulation is expected to be light, so the Winter Storm 
Warning has been allowed to expire.

$$

CAZ068-069-110300-
/O.CON.KSTO.WS.W.0004.000000T0000Z-210311T0300Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
1016 AM PST Wed Mar 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING ABOVE 3000 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 south of Highway 50, are expected.

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

* WHEN...Until 7 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.

$$
176 
WWUS46 KSTO 110300
WSWSTO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
700 PM PST Wed Mar 10 2021



CAZ068-069-110400-
/O.EXP.KSTO.WS.W.0004.000000T0000Z-210311T0300Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Chester, Quincy, and Blue Canyon
700 PM PST Wed Mar 10 2021

...WINTER STORM WARNING WILL EXPIRE AT 7 PM PST THIS EVENING...

Showers have tapered off for most of the western slopes this
evening with the exception of an area around I-80 extending north
into Yuba County and moving northward. This area will continue to
decrease in intensity over the next couple of hours but may 
locally produce up to an inch of snow. The Winter Storm Warning 
will be allowed to expire.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 2:30 AM PSTWinter Storm WatchSTO12 hr

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.