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.

Clear

54°F

12°C

Humidity	27%
Wind Speed	N 0 MPH
Barometer	29.95 in (1014.22 mb)
Dewpoint	21°F (-6°C)
Visibility	10.00 mi
Last update	10 Apr 10:35 AM PDT

More Information:

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

Extended Forecast for

7 Miles ESE 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: 54 °F
Chance
Showers and
Breezy
Tonight
Low: 25 °F
Chance
Rain/Snow and
Breezy then
Chance Snow
Showers
Saturday
High: 50 °F
Chance Snow
Showers then
Chance
Rain/Snow and
Breezy
Saturday Night
Low: 23 °F
Rain/Snow and
Breezy then
Snow Showers
Sunday
High: 38 °F
Snow Showers
and Breezy
Sunday Night
Low: 16 °F
Snow Showers
Likely then
Chance Snow
Showers
Monday
High: 42 °F
Chance Snow
Showers
Monday Night
Low: 18 °F
Partly Cloudy
Tuesday
High: 50 °F
Sunny

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms after 11am. Snow level 8200 feet. Partly sunny, with a high near 54. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

Tonight

A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Some thunder is also possible. Patchy smoke before 9pm. Partly cloudy, with a low around 25. Breezy, with a southwest wind 15 to 20 mph becoming west 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Saturday

A chance of snow showers before 2pm, then a chance of rain and snow showers. Mostly sunny, with a high near 50. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Saturday Night

A chance of rain and snow showers before 8pm, then snow showers. Low around 23. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Sunday

Snow showers. High near 38. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Sunday Night

Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 16. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Monday

A 30 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 42. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 18.

Tuesday

Sunny, with a high near 50.

Tuesday Night

Mostly clear, with a low around 23.

Wednesday

Sunny, with a high near 56.

Wednesday Night

Partly cloudy, with a low around 27.