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.

Partly Cloudy

48°F

9°C

Humidity	42%
Wind Speed	SW 23 MPH
Barometer	29.86 in (1011.18 mb)
Dewpoint	26°F (-3°C)
Visibility	10.00 mi
Wind Chill	40°F (4°C)
Last update	10 Apr 04:35 PM 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

This Afternoon
High: 42 °F
Chance Snow
Showers and
Windy
Tonight
Low: 22 °F
Chance Snow
Showers and
Windy
Saturday
High: 38 °F
Windy. Mostly
Sunny then
Slight Chance
Snow Showers
Saturday Night
Low: 20 °F
Heavy Snow
and Windy
Sunday
High: 27 °F
Heavy Snow
and Windy
Sunday Night
Low: 15 °F
Chance Snow
Showers and
Breezy
Monday
High: 31 °F
Chance Snow
Showers
Monday Night
Low: 17 °F
Partly Cloudy
Tuesday
High: 38 °F
Sunny

Detailed Forecast

This Afternoon

A 40 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 42. Windy, with a south wind around 30 mph, with gusts 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. Partly cloudy, with a low around 22. Windy, with a southwest wind 25 to 30 mph decreasing to 20 to 25 mph in the evening. Winds could gust as high as 45 mph. New snow accumulation of 1 to 2 inches possible.

Saturday

A 20 percent chance of snow showers after 2pm. Mostly sunny, with a high near 38. Windy, with a south wind 20 to 25 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 50 mph.

Saturday Night

Snow showers, mainly after 11pm. The snow could be heavy at times. Low around 20. 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 7 to 11 inches possible.

Sunday

Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 27. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Sunday Night

A 50 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 15. 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 around an inch possible.

Monday

A 40 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 31. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 17.

Tuesday

Sunny, with a high near 38.

Tuesday Night

Mostly clear, with a low around 23.

Wednesday

Sunny, with a high near 42.

Wednesday Night

Partly cloudy, with a low around 26.