Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Air Stagnation Advisory in effect from December 12, 05:00 AM MST until December 15, 05:00 AM MST

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Clear

48°F

9°C

Humidity	86%
Wind Speed	N 0 MPH
Barometer	30.15 in (1021.0 mb)
Dewpoint	44°F (7°C)
Visibility	8.00 mi
Last update	10 Dec 04:53 PM MST

More Information:

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

Extended Forecast for

35 Miles SSE Unity OR

Air Stagnation Advisory December 12, 05:00am until December 15, 05:00am

Click here for hazard details and duration

Air Stagnation Advisory

Tonight
Low: 38 °F
Partly Cloudy
Thursday
High: 48 °F
Partly Sunny
Thursday Night
Low: 34 °F
Mostly Clear
Friday
High: 46 °F
Sunny
Friday Night
Low: 32 °F
Partly Cloudy
Saturday
High: 44 °F
Mostly Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 42 °F
Mostly Sunny
Sunday Night
Low: 32 °F
Mostly Cloudy

Detailed Forecast

Tonight

Partly cloudy, with a low around 38. West southwest wind around 14 mph.

Thursday

Partly sunny, with a high near 48. West southwest wind 9 to 14 mph.

Thursday Night

Mostly clear, with a low around 34. West southwest wind around 9 mph.

Friday

Sunny, with a high near 46. West southwest wind around 8 mph.

Friday Night

Partly cloudy, with a low around 32. West wind 6 to 9 mph.

Saturday

Mostly sunny, with a high near 44.

Saturday Night

Mostly clear, with a low around 30.

Sunday

Mostly sunny, with a high near 42.

Sunday Night

Mostly cloudy, with a low around 32.

Monday

A chance of rain and snow, mainly after 11am. Snow level 6300 feet rising to 7300 feet in the afternoon. Partly sunny, with a high near 42. Chance of precipitation is 40%.

Monday Night

Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

Tuesday

A chance of rain and snow. Partly sunny, with a high near 46. Chance of precipitation is 40%.

Tuesday Night

A chance of rain and snow. Snow level 6600 feet lowering to 5500 feet after midnight . Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.

Wednesday

A chance of rain and snow. Partly sunny, with a high near 42. Breezy. Chance of precipitation is 40%.