Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Hazardous Weather Conditions

Winter Weather Advisory until April 22, 05:00 PM PDT

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

unknown precip

28°F

-2°C

Humidity	92%
Wind Speed	N 0 MPH
Barometer	30.0 in (1015.92 mb)
Dewpoint	27°F (-3°C)
Visibility	7.00 mi
Last update	21 Apr 10:15 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

5 Miles ENE Mammoth Lakes CA

Winter Weather Advisory April 21, 10:45pm until April 22, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory April 21, 10:45pm until April 22, 05:00pm
NOW until 5:00pm Wed
Winter Weather Advisory
Tonight
Low: 22 °F
Heavy Snow
Wednesday
High: 42 °F
Slight Chance
Snow Showers
Wednesday Night
Low: 19 °F
Mostly Clear
Thursday
High: 54 °F
Sunny
Thursday Night
Low: 26 °F
Partly Cloudy
Friday
High: 54 °F
Partly Sunny
Friday Night
Low: 28 °F
Partly Cloudy
Saturday
High: 48 °F
Chance Snow
Showers then
Chance
Rain/Snow

Detailed Forecast

Tonight

Snow showers likely, mainly before 2am. The snow could be heavy at times. Mostly cloudy, then gradually becoming mostly clear, with a low around 22. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of 3 to 5 inches possible.

Wednesday

A 20 percent chance of snow showers after 11am. Sunny, with a high near 42. West wind around 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 19. West wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 54. Calm wind becoming north around 5 mph.

Thursday Night

Partly cloudy, with a low around 26. North wind around 5 mph becoming calm in the evening.

Friday

Partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 28.