Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

OLD FAITHFUL RANGER STATION (OFAW4)

Lat: 44.456667°NLon: 110.849444°WElev: 7332.0ft.

34°F

1°C

Humidity	100%
Wind Speed	S 10 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Wind Chill	26°F (-3°C)
Last update	26 Dec 12:15 AM MST

More Information:

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

Extended Forecast for

2 Miles ESE West Yellowstone MT

Winter Weather Advisory December 26, 05:00am until December 26, 11:00pm

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 28 °F
Snow and
Breezy
Friday
High: 36 °F
Snow and
Patchy
Blowing Snow
Friday Night
Low: 19 °F
Snow Likely
and Breezy
Saturday
High: 27 °F
Snow
Saturday Night
Low: -6 °F
Slight Chance
Snow then
Mostly Clear
Sunday
High: 20 °F
Sunny
Sunday Night
Low: -1 °F
Partly Cloudy
Monday
High: 25 °F
Mostly Sunny
Monday Night
Low: 5 °F
Partly Cloudy

Detailed Forecast

Overnight

Snow. Some thunder is also possible. Low around 28. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

Friday

Snow, mainly before 2pm. Some thunder is also possible. Patchy blowing snow between 9am and 1pm. High near 36. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

Snow likely, mainly after 10pm. Some thunder is also possible. Mostly cloudy, with a low around 19. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

Snow. Some thunder is also possible. High near 27. West southwest wind 7 to 14 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Saturday Night

A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -6. Light north northwest wind.

Sunday

Sunny, with a high near 20. Calm wind becoming west southwest around 5 mph.

Sunday Night

Partly cloudy, with a low around -1. Calm wind.

Monday

Mostly sunny, with a high near 25.

Monday Night

Partly cloudy, with a low around 5.

Tuesday

Partly sunny, with a high near 30.