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.

light snow,mist

32°F

0°C

Humidity	100%
Wind Speed	NNW 5 MPH
Barometer	29.74 in (1007.11 mb)
Dewpoint	32°F (0°C)
Visibility	1.00 mi
Wind Chill	27°F (-3°C)
Last update	12 Apr 12:55 AM PDT

More Information:

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

Extended Forecast for

9 Miles ESE 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
Overnight
Low: 18 °F
Heavy Snow
and Breezy
Sunday
High: 33 °F
Snow Showers
and Breezy
Sunday Night
Low: 13 °F
Chance Snow
Showers and
Breezy then
Mostly Clear
Monday
High: 37 °F
Chance Snow
Showers
Monday Night
Low: 17 °F
Partly Cloudy
Tuesday
High: 44 °F
Sunny
Tuesday Night
Low: 22 °F
Mostly Clear
Wednesday
High: 47 °F
Mostly Sunny

Detailed Forecast

Overnight

Snow showers. The snow could be heavy at times. Some thunder is also possible. Low around 18. Breezy, with a south wind around 25 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 3 to 7 inches possible.

Sunday

Snow showers, mainly before 11am. Some thunder is also possible. High near 33. Breezy, with a southwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Sunday Night

A 40 percent chance of snow showers before 11pm. Partly cloudy, with a low around 13. Breezy, with a southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph. New snow accumulation of less than one inch possible.

Monday

A 50 percent chance of snow showers, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 37. Calm wind becoming northwest around 5 mph in the afternoon. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 17. Northwest wind 5 to 10 mph becoming light west after midnight.

Tuesday

Sunny, with a high near 44. Calm wind becoming west around 5 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 22.

Wednesday

Mostly sunny, with a high near 47.

Wednesday Night

Mostly cloudy, with a low around 24.

Thursday

Mostly sunny, with a high near 43.