Heavy to Excessive Rainfall in Montana; Bering Sea Low to Bring Impacts to Southwest Alaska

Heavy to excessive rainfall is forecast across portions of Montana Wednesday, along with an isolated flash flooding threat. A Slight Risk of Excessive Rainfall (level 2 of 4) is in effect for central Montana. A Bering Sea low will continue to bring strong winds, moderate to heavy rainfall, and high seas to southwest Alaska. A North Pacific Low may impact southwest Alaska at the end of the week. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from September 18, 02:00 PM PDT until September 19, 08:00 PM PDT

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Overcast

58°F

14°C

Humidity	35%
Wind Speed	N 0 MPH
Barometer	30.06 in (1017.95 mb)
Dewpoint	31°F (-1°C)
Visibility	10.00 mi
Last update	17 Sep 07:15 PM PDT

More Information:

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

Extended Forecast for

8 Miles ESE Mammoth Lakes CA

Winter Weather Advisory September 18, 02:00pm until September 19, 08:00pm

Click here for hazard details and duration

Winter Weather Advisory

Tonight
Low: 39 °F
Mostly Cloudy
Wednesday
High: 55 °F
Chance
Showers then
Showers
Likely
Wednesday Night
Low: 37 °F
Showers
Thursday
High: 49 °F
Showers
Thursday Night
Low: 37 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 60 °F
Slight Chance
Showers
Friday Night
Low: 42 °F
Clear
Saturday
High: 66 °F
Sunny
Saturday Night
Low: 44 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm.

Wednesday

A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Snow level 9700 feet rising to 10400 feet in the afternoon. Mostly cloudy, with a high near 55. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.

Wednesday Night

Showers and possibly a thunderstorm. Snow level 10300 feet lowering to 9700 feet after midnight . Low around 37. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%.

Thursday

Showers likely, then showers and possibly a thunderstorm after 11am. Snow level 9400 feet rising to 10000 feet in the afternoon. High near 49. North wind 5 to 10 mph becoming east in the morning. Chance of precipitation is 80%.

Thursday Night

A 50 percent chance of showers and thunderstorms before 11pm. Snow level 10000 feet. Partly cloudy, with a low around 37. Northeast wind around 5 mph becoming northwest after midnight.

Friday

A 20 percent chance of showers after 11am. Snow level 9800 feet rising to 11000 feet in the afternoon. Sunny, with a high near 60. Northwest wind 5 to 10 mph becoming north in the morning.

Friday Night

Clear, with a low around 42.

Saturday

Sunny, with a high near 66.

Saturday Night

Mostly clear, with a low around 44.

Sunday

Sunny, with a high near 68.

Sunday Night

Mostly clear, with a low around 46.

Monday

Mostly sunny, with a high near 70.