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.

snow,freezing fog

32°F

0°C

Humidity	92%
Wind Speed	E 5 MPH
Barometer	29.7 in (1005.76 mb)
Dewpoint	30°F (-1°C)
Visibility	0.25 mi
Wind Chill	27°F (-3°C)
Last update	12 Apr 02:55 AM PDT

More Information:

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

Extended Forecast for

10 Miles ENE 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: 20 °F
Snow Showers
Sunday
High: 43 °F
Snow Showers
Likely
Sunday Night
Low: 13 °F
Chance Snow
Showers then
Mostly Clear
Monday
High: 46 °F
Chance Snow
Showers
Monday Night
Low: 16 °F
Mostly Clear
Tuesday
High: 54 °F
Sunny
Tuesday Night
Low: 21 °F
Mostly Clear
Wednesday
High: 56 °F
Mostly Sunny

Detailed Forecast

Overnight

Snow showers. Some thunder is also possible. Low around 20. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

Sunday

Snow showers likely, mainly before 8am. Some thunder is also possible. Partly sunny, with a high near 43. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Sunday Night

A 30 percent chance of snow showers, mainly before 8pm. Partly cloudy, with a low around 13. Southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph. Little or no snow accumulation expected.

Monday

A 50 percent chance of snow showers, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 46. Calm wind becoming north around 5 mph. Little or no snow accumulation expected.

Monday Night

Mostly clear, with a low around 16. Northwest wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 54. Calm wind becoming west around 5 mph.

Tuesday Night

Mostly clear, with a low around 21.

Wednesday

Mostly sunny, with a high near 56.

Wednesday Night

Mostly cloudy, with a low around 24.

Thursday

Mostly sunny, with a high near 52.