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

54°F

12°C

Humidity	23%
Wind Speed	WSW 14 MPH
Barometer	29.88 in (1011.85 mb)
Dewpoint	17°F (-8°C)
Visibility	10.00 mi
Last update	11 Apr 01:55 PM PDT

More Information:

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

Extended Forecast for

4 Miles E 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
This Afternoon
High: 50 °F
Slight Chance
Rain/Snow and
Breezy
Tonight
Low: 21 °F
Heavy Snow
and Breezy
Sunday
High: 38 °F
Snow Showers
Sunday Night
Low: 16 °F
Chance Snow
Showers then
Slight Chance
Snow Showers
Monday
High: 43 °F
Chance Snow
Showers
Monday Night
Low: 19 °F
Partly Cloudy
Tuesday
High: 50 °F
Sunny
Tuesday Night
Low: 24 °F
Mostly Clear

Detailed Forecast

This Afternoon

A slight chance of rain and snow showers. Snow level 7700 feet. Mostly sunny, with a high near 50. Breezy, with a southwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.

Tonight

Snow, mainly after 11pm. The snow could be heavy at times. Some thunder is also possible. Low around 21. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Sunday

Snow showers, mainly before 8am. 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 80%. New snow accumulation of 1 to 2 inches possible.

Sunday Night

A 50 percent chance of snow showers, mainly before 11pm. Partly cloudy, with a low around 16. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. New snow accumulation of less than one inch possible.

Monday

A 40 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 43. Calm wind becoming northwest around 5 mph in the afternoon. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 19. Northwest wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 50.

Tuesday Night

Mostly clear, with a low around 24.

Wednesday

Sunny, with a high near 54.

Wednesday Night

Partly cloudy, with a low around 27.

Thursday

Mostly sunny, with a high near 52.