Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Winter Storm Watch in effect from January 2, 04:00 PM PST until January 4, 10:00 AM PST

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Clear

19°F

-7°C

Humidity	79%
Wind Speed	N 0 MPH
Barometer	30.38 in (1028.79 mb)
Dewpoint	14°F (-10°C)
Visibility	10.00 mi
Last update	30 Dec 01:15 PM PST

More Information:

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

Extended Forecast for

12 Miles ENE Mammoth Lakes CA

Winter Storm Watch January 2, 04:00pm until January 4, 10:00am

Click here for hazard details and duration

Winter Storm Watch

This Afternoon
High: 42 °F
Mostly Cloudy
Tonight
Low: 8 °F
Mostly Cloudy
Wednesday
High: 42 °F
Rain/Snow
Likely
Wednesday Night
Low: 23 °F
Wintry Mix
New Year's Day
High: 44 °F
Rain/Snow
then Rain
Thursday Night
Low: 24 °F
Slight Chance
Rain
Friday
High: 45 °F
Chance
Rain/Snow
Friday Night
Low: 24 °F
Rain/Snow
Likely
Saturday
High: 42 °F
Rain/Snow

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 42. Calm wind.

Tonight

Mostly cloudy, with a low around 8. Calm wind.

Wednesday

Rain and snow likely, mainly after 1pm. Snow level 7100 feet rising to 7900 feet in the afternoon. Cloudy, with a high near 42. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.

Wednesday Night

Rain, snow, and freezing rain before 4am, then rain likely between 4am and 5am, then snow likely after 5am. Snow level 8200 feet. Low around 23. Calm wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

New Year's Day

Snow likely before 7am, then rain. Snow level 8500 feet. High near 44. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday Night

A 20 percent chance of rain before 4am. Snow level 8200 feet. Mostly cloudy, with a low around 24. South wind around 5 mph becoming calm in the evening.

Friday

A chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Snow level 7600 feet. Partly sunny, with a high near 45. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday Night

A chance of rain before 7pm, then rain and snow likely between 7pm and 4am, then snow likely after 4am. Snow level 7300 feet. Mostly cloudy, with a low around 24.

Saturday

Snow likely before 7am, then rain and snow. Snow level 6900 feet. Mostly cloudy, with a high near 42.

Saturday Night

Snow likely, mainly before 4am. Mostly cloudy, with a low around 18.

Sunday

Snow likely. Mostly cloudy, with a high near 41.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 15.

Monday

A chance of snow. Partly sunny, with a high near 40.