Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Winter Storm Warning in effect from April 11, 02:00 PM PDT until April 12, 11:00 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	42%
Wind Speed	SSW 19 MPH
Barometer	29.79 in (1008.81 mb)
Dewpoint	8°F (-13°C)
Visibility	9.00 mi
Wind Chill	15°F (-9°C)
Last update	12 Apr 06:15 AM PDT

More Information:

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

Extended Forecast for

10 Miles SE Mammoth Lakes CA

Winter Storm Warning until April 12, 11:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning until April 12, 11:00pm
NOW until 11:00pm Sun
Winter Storm Warning
Today
High: 27 °F
Heavy Snow
and Windy
Tonight
Low: 13 °F
Chance Snow
Showers and
Breezy then
Mostly Clear
Monday
High: 31 °F
Snow Showers
Likely
Monday Night
Low: 18 °F
Partly Cloudy
Tuesday
High: 38 °F
Sunny
Tuesday Night
Low: 23 °F
Mostly Clear
Wednesday
High: 41 °F
Mostly Sunny
Wednesday Night
Low: 25 °F
Mostly Cloudy
and Breezy
then Partly
Cloudy

Detailed Forecast

Today

Snow showers, mainly before 8am. The snow could be heavy at times. Some thunder is also possible. High near 27. Windy, with a southwest wind 30 to 35 mph, with gusts as high as 55 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 3 to 5 inches possible.

Tonight

A 40 percent chance of snow showers before 11pm. Partly cloudy, with a low around 13. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph. New snow accumulation of 1 to 3 inches possible.

Monday

Snow showers likely, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 31. Southwest wind 5 to 10 mph becoming north in the morning. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Monday Night

Partly cloudy, with a low around 18. West wind 5 to 10 mph, with gusts as high as 20 mph.

Tuesday

Sunny, with a high near 38. Southwest wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 23. Southwest wind 5 to 15 mph.

Wednesday

Mostly sunny, with a high near 41.

Wednesday Night

Mostly cloudy, with a low around 25. Breezy.

Thursday

Mostly sunny, with a high near 37. Breezy.