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.

Mostly Cloudy

41°F

5°C

Humidity	30%
Wind Speed	S 9 MPH
Barometer	29.83 in (1010.16 mb)
Dewpoint	12°F (-11°C)
Visibility	10.00 mi
Wind Chill	35°F (2°C)
Last update	11 Apr 09:35 PM PDT

More Information:

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

Extended Forecast for

9 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
Tonight
Low: 12 °F
Heavy Snow
and Very
Windy
Sunday
High: 22 °F
Heavy Snow
and Windy
Sunday Night
Low: 8 °F
Chance Snow
Showers and
Windy
Monday
High: 27 °F
Chance Snow
Showers
Monday Night
Low: 11 °F
Partly Cloudy
Tuesday
High: 34 °F
Sunny
Tuesday Night
Low: 16 °F
Mostly Clear
Wednesday
High: 37 °F
Sunny then
Sunny and
Breezy

Detailed Forecast

Tonight

Snow, mainly after 11pm. The snow could be heavy at times. Some thunder is also possible. Low around 12. Very windy, with a south wind 35 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 8 to 12 inches possible.

Sunday

Snow showers, mainly before 8am. The snow could be heavy at times. Some thunder is also possible. High near 22. Windy, with a southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Sunday Night

A 50 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 8. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph. New snow accumulation of 1 to 3 inches possible.

Monday

A 50 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 27. Southwest wind around 10 mph becoming west in the morning. Winds could gust as high as 20 mph. New snow accumulation of less than one inch possible.

Monday Night

Partly cloudy, with a low around 11. West wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday

Sunny, with a high near 34. Southwest wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 16.

Wednesday

Sunny, with a high near 37. Breezy.

Wednesday Night

Partly cloudy, with a low around 20. Breezy.

Thursday

Mostly sunny, with a high near 35. Breezy.