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

Clear

45°F

7°C

Humidity	61%
Wind Speed	ESE 5 MPH
Barometer	29.97 in (1014.9 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Wind Chill	42°F (6°C)
Last update	10 Apr 08:15 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 April 11, 02:00pm until April 12, 11:00pm

Click here for hazard details and duration

Winter Storm Warning

Today
High: 42 °F
Chance Snow
Showers and
Windy
Tonight
Low: 23 °F
Chance Snow
Showers and
Windy
Saturday
High: 38 °F
Chance Snow
Showers and
Windy
Saturday Night
Low: 19 °F
Heavy Snow
and Windy
Sunday
High: 27 °F
Snow Showers
and Windy
Sunday Night
Low: 15 °F
Snow Showers
Likely and
Breezy then
Chance Snow
Showers
Monday
High: 32 °F
Chance Snow
Showers
Monday Night
Low: 19 °F
Partly Cloudy
Tuesday
High: 39 °F
Sunny

Detailed Forecast

Today

A 40 percent chance of snow showers after 11am. Some thunder is also possible. Mostly sunny, with a high near 42. Windy, with a south wind 20 to 25 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph. Total daytime snow accumulation of less than a half inch possible.

Tonight

A 50 percent chance of snow showers before 2am. Some thunder is also possible. Mostly cloudy, with a low around 23. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 45 mph. New snow accumulation of 1 to 2 inches possible.

Saturday

A 30 percent chance of snow showers, mainly after 11am. Mostly sunny, with a high near 38. Windy, with a southwest wind 20 to 25 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 50 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Snow showers, mainly after 11pm. The snow could be heavy at times. Low around 19. Windy, with a south wind 25 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.

Sunday

Snow showers. High near 27. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Sunday Night

Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 15. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Monday

A 30 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 32. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 19.

Tuesday

Sunny, with a high near 39.

Tuesday Night

Mostly clear, with a low around 25.

Wednesday

Sunny, with a high near 44.

Wednesday Night

Partly cloudy, with a low around 28.