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Mount Shasta Warnings, Watches and Advisories

Blizzard Warning

Blizzard Warning issued February 27 at 12:18PM PST until March 3 at 4:00AM PST by NWS Reno NV

* WHAT...Blizzard conditions likely, particularly from Friday evening through Saturday morning. Snow accumulations of 1 to 3 feet for Plumas, Sierra and western Lassen Counties, up to 12 inches along Highway 395 in Lassen County. Localized amounts of 4 to 7 feet near Lassen Park, Yuba Pass, and Lake Davis. Winds gusting as high as 70 mph. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From 4 AM Thursday to 4 AM PST Sunday. * IMPACTS...Whiteout conditions with near zero visibility at times due to blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

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Area
Lassen-Eastern Plumas-Eastern Sierra Counties

Blizzard Warning

Blizzard Warning issued February 27 at 12:18PM PST until March 3 at 10:00AM PST by NWS Reno NV

* WHAT...Blizzard conditions likely, particularly from Friday evening through Saturday morning. Snow accumulations between 2 and 4 feet for Lake Tahoe communities, with 4 to 8 feet above 7000 feet. Winds gusting to 60 mph in lower elevations and above 100 mph over Sierra ridges. * WHERE...Greater Lake Tahoe Area. * WHEN...From 10 AM Thursday to 10 AM PST Sunday. * IMPACTS...Whiteout conditions with near zero visibility at times due to blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

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Area
Greater Lake Tahoe Area; Greater Lake Tahoe Area

Blizzard Warning

Blizzard Warning issued February 27 at 12:18PM PST until March 3 at 10:00AM PST by NWS Reno NV

* WHAT...Blizzard conditions likely, particularly from Friday night through Saturday. Snow accumulations of 1 to 3 feet for communities along Highway 395 with 3 to 6 feet along the Sierra Crest. Winds gusting as high as 70 mph in the lower elevations and above 100 mph over Sierra ridges. * WHERE...Mono County. * WHEN...From 4 PM Thursday to 10 AM PST Sunday. * IMPACTS...Whiteout conditions with near zero visibility at times due to blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

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Area
Mono

Blizzard Warning

Blizzard Warning issued February 27 at 12:06PM PST until March 3 at 10:00AM PST by NWS Sacramento CA

* WHAT...Extremely dangerous to impossible travel from blizzard conditions Friday into Saturday morning. Total snow accumulations of 5 to 10 feet above 5000 feet, with 1 to 4 feet above 3000 feet from Thursday through Sunday morning. Minor accumulations down to around 2000 feet. Winds gusting as high as 65 mph. * WHERE...West Slope Northern Sierra Nevada, Northeast Foothills, Motherlode, and Western Plumas County/Lassen Park above 2000 feet. Including Interstate 80 and US Highway 50. * WHEN...From 4 AM PST Thursday to 10 AM PST Sunday. Blizzard conditions Friday through Saturday morning. * IMPACTS...Extremely dangerous to impossible travel conditions with extended road closures likely. Widespread blowing snow will create blizzard conditions with white-out conditions and near zero visibility. Very strong winds, combined with heavy snow could cause extensive tree damage and extended power outages. * ADDITIONAL DETAILS...Snow levels initially around 5000 to 6000 feet, lowering to 4000 to 5000 feet Friday, and down to around 2000 feet by Saturday. Snow rates of 2 to 4 inches per hour at times. Blizzard conditions expected Friday into Saturday morning when snowfall is heaviest.

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Area
Northeast Foothills/Sacramento Valley; Motherlode; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

Winter Storm Warning

Winter Storm Warning issued February 27 at 12:06PM PST until March 3 at 10:00AM PST by NWS Sacramento CA

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 4 feet. Winds gusting as high as 60 mph. * WHERE...Shasta County mountains including Interstate 5, Burney Basin, and northern Coastal Range above 2000 feet. * WHEN...From 10 PM PST Wednesday to 10 AM PST Sunday. * IMPACTS...Difficult to impossible travel conditions with whiteout conditions at times from blowing snow, chain controls, and road closures. Strong winds could cause tree damage and power outages. * ADDITIONAL DETAILS...Snow levels around 5000 feet initially, lowering to around 3000 to 4000 feet Friday, and then 1500 to 2000 feet by Saturday. Potential for minor accumulations down to around 1000 feet Saturday morning. Snow rates of 1 to 3 inches per hour at times. Heaviest snow expected Thursday night into Friday.

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Area
Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Mountains Southwestern Shasta County to Western Colusa County

High Wind Watch

High Wind Watch issued February 27 at 10:49AM PST until February 29 at 1:00PM PST by NWS Eureka CA

* WHAT...South winds 30 to 40 mph with gusts up to 65 mph possible on high ridges. * WHERE...Humboldt Interior, and Southwestern Humboldt. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands.

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Area
Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior

High Wind Watch

High Wind Watch issued February 27 at 10:49AM PST until February 29 at 4:00PM PST by NWS Eureka CA

* WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph possible on high ridges. Gusts up to 60 mph possible along the coast. * WHERE...Del Norte County. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands.

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Area
Coastal Del Norte; Del Norte Interior

Winter Storm Watch

Winter Storm Watch issued February 27 at 10:49AM PST until March 1 at 10:00AM PST by NWS Eureka CA

...MAJOR WINTER STORM THURSDAY THROUGH SATURDAY... .A strong snow storm will impact the area beginning early Thursday morning. Snow levels will start above 3000 feet but will gradually drop into the weekend. Snow levels will most likely drop below 1000 feet throughout the area by Saturday morning. Very heavy snow should be expected on highway passes especially in Humboldt, Del Norte, and Trinity Counties. * WHAT...Heavy snow possible for elevations above 2000 feet. Total snow accumulations between 5 and 15 inches possible. Winds could gust as high as 60 mph. * WHERE...Trinity County. * WHEN...From Wednesday evening through Friday morning. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snow will continue into Saturday with snow levels falling to lower elevations.

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Area
Northern Trinity; Southern Trinity

Winter Storm Watch

Winter Storm Watch issued February 27 at 10:49AM PST until March 1 at 10:00AM PST by NWS Eureka CA

...MAJOR WINTER STORM THURSDAY THROUGH SATURDAY... .A strong snow storm will impact the area beginning early Thursday morning. Snow levels will start above 3000 feet but will gradually drop into the weekend. Snow levels will most likely drop below 1000 feet throughout the area by Saturday morning. Very heavy snow should be expected on highway passes especially in Humboldt, Del Norte, and Trinity Counties. * WHAT...Heavy snow possible for elevations above 2500 feet. Total snow accumulations between 5 and 8 inches possible. Winds could gust as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From Thursday afternoon through Friday morning. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Snow will continue into Saturday with snow levels falling to lower elevations.

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Area
Northeastern Mendocino Interior; Northern Lake County

Winter Storm Watch

Winter Storm Watch issued February 27 at 10:49AM PST until March 1 at 10:00AM PST by NWS Eureka CA

...MAJOR WINTER STORM THURSDAY THROUGH SATURDAY... .A strong snow storm will impact the area beginning early Thursday morning. Snow levels will start above 3000 feet but will gradually drop into the weekend. Snow levels will most likely drop below 1000 feet throughout the area by Saturday morning. Very heavy snow should be expected on highway passes especially in Humboldt, Del Norte, and Trinity Counties. * WHAT...Heavy snow possible for elevations above 1500 feet. Total snow accumulations between 6 and 23 inches possible. Winds could gust as high as 70 mph on high peaks. * WHERE...Del Norte Interior. * WHEN...From late Wednesday night through Friday morning. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. Very strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snow will continue into Saturday with snow levels falling to lower elevations.

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Area
Del Norte Interior

Winter Storm Watch

Winter Storm Watch issued February 27 at 10:49AM PST until March 1 at 10:00AM PST by NWS Eureka CA

...MAJOR WINTER STORM THURSDAY THROUGH SATURDAY... .A strong snow storm will impact the area beginning early Thursday morning. Snow levels will start above 3000 feet but will gradually drop into the weekend. Snow levels will most likely drop below 1000 feet throughout the area by Saturday morning. Very heavy snow should be expected on highway passes especially in Humboldt, Del Norte, and Trinity Counties. * WHAT...Heavy snow possible for elevations above 2000 feet. Total snow accumulations between 3 and 12 inches possible. Winds could gust as high as 55 mph. * WHERE...Humboldt Interior. * WHEN...From Thursday morning through Friday morning. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snow will continue into Saturday with snow levels falling to lower elevations.

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Area
Northern Humboldt Interior; Southern Humboldt Interior

Winter Storm Watch

Winter Storm Watch issued February 27 at 9:58AM PST until March 3 at 10:00AM PST by NWS Hanford CA

* WHAT...Heavy snow possible. Total snow accumulations 6 to 12 inches above 2500 Feet. * WHERE...The Sierra Nevada foothills. * WHEN...From Saturday morning through Sunday morning. * IMPACTS...Travel could be very difficult to nearly impossible. Delay travel plans, if possible.

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Area
Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite Valley; Piute Walker Basin

Winter Storm Watch

Winter Storm Watch issued February 27 at 9:58AM PST until March 3 at 10:00AM PST by NWS Hanford CA

* WHAT...Heavy snow possible. Snow accumulations 4 to 6 feet above 6000 feet. Total snow 2 to 4 feet from 5000 feet to 6000 feet. Snowfall 1 to 2 feet from 4000 feet to 5000 feet. Total snow accumulations 1 to 2 feet above 2500 feet. Winds may gust as high as 55 mph on exposed ridgetops and along the crest. * WHERE...The Sierra Nevada, including Mariposa-Madera Lower Sierra, Fresno-Tulare Lower Sierra, South End of the Lower Sierra, San Joaquin River Canyon and Piute Walker Basin Counties. * WHEN...From Thursday afternoon through Sunday morning. * IMPACTS...Travel could be extremely difficult to nearly impossible. Travel is not advised. Strong, gusty winds may result in whiteout conditions. The cold wind chills as low as 25 degrees below zero could cause frostbite on exposed skin in as little as 30 minutes.

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Area
Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra

Frost Advisory

Frost Advisory issued February 27 at 8:33AM PST until February 28 at 9:00AM PST by NWS San Francisco CA

* WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...From 2 AM to 9 AM PST Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...These temperatures will be hazardous to sensitive populations such as unhoused individuals.

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Area
Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys

High Wind Watch

High Wind Watch issued February 27 at 3:55AM PST until February 29 at 10:00PM PST by NWS Reno NV

* WHAT...Southwest winds 40 to 50 mph with gusts up to 75 mph. * WHERE...In California, Surprise Valley California. In Nevada, Northern Washoe County, Western Nevada Basin and Range including Pyramid Lake, and Greater Reno-Carson City-Minden Area. * WHEN...From late Wednesday night through Thursday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.

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Area
Surprise Valley California; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County

High Wind Watch

High Wind Watch issued February 27 at 2:52AM PST until February 29 at 4:00PM PST by NWS Medford OR

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Shasta Valley in Central Siskiyou County. This includes the communities of Grenada and Montague as well as portions of Interstate 5 from Weed to Yreka. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Central Siskiyou County

Winter Storm Watch

Winter Storm Watch issued February 27 at 1:07AM PST until February 29 at 10:00PM PST by NWS Medford OR

* WHAT...Heavy snow and strong winds possible. Total snow accumulations of 5 to 12 inches possible. Winds could gust as high as 60 mph. * WHERE...The Cascades of central and southeast Siskiyou County, including Tennant, Medicine Lake, and portions of highway 97. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. Strong winds could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
North Central and Southeast Siskiyou County

Winter Storm Watch

Winter Storm Watch issued February 27 at 1:07AM PST until February 29 at 10:00PM PST by NWS Medford OR

* WHAT...Heavy snow and strong winds possible. Total snow accumulations of up to 7 inches possible. Winds could gust as high as 65 mph. * WHERE...In California, Modoc and northeast Siskiyou counties. In Oregon, Klamath and Lake counties. This includes highways 97 and 232 north of Chiloquin, highway 140 near Bly and over the Warners, highway 31 between Paisley and Silver Lake, and highway 299 over Cedar Pass. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

Winter Storm Watch

Winter Storm Watch issued February 27 at 1:07AM PST until February 29 at 10:00PM PST by NWS Medford OR

* WHAT...Heavy snow possible above 3000 feet. Total snow accumulations of 5 to 10 inches possible, with 1 to 2 feet possible above 4000 feet. Winds could gust as high as 60 mph. * WHERE...Western and central Siskiyou County above 3000 feet, including McCloud, Mount Shasta City, Weed, Callahan, and portions of Interstate 5 and highway 97, highway 98 at Snowman Summit and Dead Horse Summit, Etna Summit, and Scott Mountain Summit. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Western Siskiyou County; Central Siskiyou County; South Central Siskiyou County

Winter Storm Watch

Winter Storm Watch issued February 27 at 12:56AM PST until March 3 at 4:00AM PST by NWS Las Vegas NV

* WHAT...Heavy snow possible. Total snow accumulations of 18 to 24 inches possible at Aspendell, with 24 to 36 inches of snow possible above 9000 feet and locally higher amounts near the crest. Winds may gust as high as 40 mph. * WHERE...Eastern Sierra Slopes. * WHEN...From Friday morning through late Saturday night. * IMPACTS...Travel could be very difficult to impossible. * ADDITIONAL DETAILS...Travel may become difficult to impossible on Highway 168 west of Bishop.

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Area
Eastern Sierra Slopes of Inyo County
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Fair 39°F
30.14in
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45%
Humidity
North 4.6mph
Wind
Fair

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