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Sierra County Alerts
NOAA's National Weather Service
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Updates every 15 Minutes
Updated:March 21, 2023 3:30 am PDT

Winter Weather Advisory WINTER WEATHER ADVISORY  
Sierra County

Effective: Tue, 3/21 5:00am Severity: Minor
Updated: March 21, 2023 3:30 am Urgency: Expected
Expires: Wed, 3/22 5:00am Certainty: Likely

Areas Affected: West Slope Northern Sierra Nevada - Western Plumas County, Lassen Park
Alert Details:
* WHAT...Snow expected. Total accumulations of 4 to 8 inches above
4000 feet, with 8 to 16 inches across the higher elevations. 1
to 2 feet is possible for higher elevations south of Highway 50.
Winds gusting as high as 45 mph.
* WHERE...Western Plumas County/Lassen Park and West Slope
Northern Sierra Nevada including Interstate 80 over Donner Pass
and Highway 50 over Echo Summit.
* WHEN...From 5 AM early this morning to 5 AM PDT Wednesday.
* IMPACTS...Travel could be very difficult with delays and chain
controls. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS...Snow levels will be around 3000 to 5000
feet. The heaviest snow is expected today.

Slow down and use caution while traveling.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.
Special Weather Statement SPECIAL WEATHER STATEMENT  
Sierra County

Effective: Tue, 3/21 5:00am Severity: Minor
Updated: March 21, 2023 3:30 am Urgency: Expected
Expires: Tue, 3/21 4:00pm Certainty: Observed

Areas Affected: Lassen-Eastern Plumas-Eastern Sierra Counties - Surprise Valley California
Alert Details:
...More Snow Potential Tuesday into Thursday...
Another storm will arrive in the Sierra and western Nevada Tuesday
into Thursday bringing the next round of precipitation to the
region. This south to north meandering storm will bring light to
moderate snow showers into western Nevada Tuesday morning. Snow
showers will begin before sunrise for areas along and south of
Highway 50 then spread northward across Interstate 80 (around 11
AM) and into northern Washoe and Lassen counties by the afternoon.
With most of the snow projected to occur during the day, only
slushy wet accumulations are forecast in the lower western Nevada
valleys. Remember to keep a close eye on road conditions Tuesday
and Wednesday commutes since there is the possibility for stronger
showers that produce enhanced snow accumulations.

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