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

34°F

1°C

Humidity	80%
Wind Speed	E 4 MPH
Barometer	29.9 in (1012.53 mb)
Dewpoint	28°F (-2°C)
Visibility	10.00 mi
Wind Chill	30°F (-1°C)
Last update	11 Apr 03:55 AM PDT

More Information:

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

Extended Forecast for

12 Miles ESE Mammoth Lakes CA

Winter Storm Warning April 11, 02:00pm until April 12, 11:00pm

Click here for hazard details and duration

Winter Storm Warning

Today
High: 50 °F
Mostly Sunny
Tonight
Low: 23 °F
Heavy Snow
and Breezy
Sunday
High: 38 °F
Snow Showers
Sunday Night
Low: 18 °F
Chance Snow
Showers
Monday
High: 42 °F
Chance Snow
Showers
Monday Night
Low: 20 °F
Mostly Clear
Tuesday
High: 49 °F
Sunny
Tuesday Night
Low: 25 °F
Mostly Clear
Wednesday
High: 54 °F
Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 50. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

Tonight

Snow showers likely, mainly after 11pm. The snow could be heavy at times. Increasing clouds, with a low around 23. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

Sunday

Snow showers. Some thunder is also possible. High near 38. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Sunday Night

A 40 percent chance of snow showers, mainly before 11pm. Partly cloudy, with a low around 18. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

Monday

A 40 percent chance of snow showers, mainly after 11am. Mostly sunny, with a high near 42. Calm wind becoming northwest around 5 mph in the afternoon. Little or no snow accumulation expected.

Monday Night

Mostly clear, with a low around 20. West wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 49.

Tuesday Night

Mostly clear, with a low around 25.

Wednesday

Sunny, with a high near 54.

Wednesday Night

Partly cloudy, with a low around 27.

Thursday

Mostly sunny, with a high near 52.