Sierra County, California
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Sierra County, California
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Special Weather Statement
Surprise Valley California-Lassen-Eastern Plumas-
Eastern Sierra Counties-Greater Lake Tahoe Area-Mono County-
Mineral and Southern Lyon Counties-Greater Reno-Carson City-
Minden Area-Western Nevada Basin and Range including Pyramid Lake-
Northern Washoe County-
Including the cities of Cedarville, Eagleville, Fort Bidwell,
Portola, Susanville, Westwood, Sierraville, Loyalton,
South Lake Tahoe, Tahoe City, Truckee, Markleeville, Bridgeport,
Coleville, Lee Vining, Mammoth Lakes, Hawthorne, Yerington,
Smith Valley, Mina, Schurz, Stateline, Glenbrook,
Incline Village, Sparks, Verdi, Gardnerville, Virginia City,
Fernley, Fallon, Lovelock, Silver Springs, Nixon, Imlay, Empire,
and Gerlach
309 AM PDT Tue Mar 20 2018


Light valley rain and Sierra snow and rain will develop today and
tonight, with some travel impacts possible for Sierra and
northeast California passes. A much stronger system will bring
lower valley rain, Sierra rain and snow, and gusty winds starting
on Wednesday and continuing until a cold front moves through late
Thursday into Friday morning.

Impact details Wednesday through Friday:


* Snow levels will start out fairly high, between 7500 and 8500
feet, Wednesday and Wednesday night before falling Thursday
night into Friday as colder air filters into the region. Several
feet of snowfall are likely in the High Sierra by Friday
morning. Snowfall in the Tahoe Basin below 7000 feet, and in
Mono County below 8000 feet, is more uncertain and will depend
on how fast snow levels fall. Still, significant travel impacts
for the main Sierra passes including Interstate 80 and Highway
50 are likely by Thursday, continuing into Friday morning...
with impacts to Highway 395 in Mono County possible by late
Thursday night.

* Strong winds are likely over mountain ridges, with periodic
stronger gusts surfacing in Sierra valley locations.


* For Wednesday night and Thursday, rain is expected to develop in
the valleys and foothills of western Nevada. A few snowflakes
may mix in with the rain in the foothills by early Friday
morning, but accumulations are unlikely below 5500 feet.

* Winds are expected to be gusty, which could bring periodic
impacts to aviation and high-profile vehicles along with choppy
conditions on area lakes. Currently the two periods of strongest
winds look to be Wednesday and again Thursday afternoon.


Winter Storm Watch
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
355 AM PDT Tue Mar 20 2018


* WHAT...Heavy snow possible. Plan on difficult travel conditions.
Damage to trees and power lines is possible. Total snow
accumulations of 6 to 12 inches, with localized amounts up to 20
inches, are possible.

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

* WHEN...From Thursday morning through late Thursday night.

* ADDITIONAL DETAILS...Significant reductions in visibility are


A Winter Storm Watch means there is potential for significant
snow accumulations that may impact travel. Continue to monitor
the latest forecasts.

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