Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Tri-Cities Airport (KPSC)

Lat: 46.26955°NLon: 119.11813°WElev: 397.0ft.

Overcast

34°F

1°C

Humidity 86%
Wind Speed NW 3 MPH
Barometer 30.57 in (1035.22 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 18 Jan 06:55 PM PST
Extended Forecast for

West Pasco WA

Air Stagnation Advisory January 18, 07:21pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 07:21pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 28 °F

    Cloudy then
    Patchy
    Freezing Fog

  • M.L.King Day

    M.L.King Day: Patchy freezing fog before 10am. Mostly cloudy, with a high near 38. Calm wind.

    High: 38 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38. Light north wind.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy freezing fog after 1am. Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy
    then Patchy
    Freezing Fog

  • Wednesday

    Wednesday: Patchy freezing fog before 10am. Partly sunny, with a high near 38.

    High: 38 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy freezing fog after 4am. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Patchy
    Freezing Fog

  • Thursday

    Thursday: Patchy freezing fog before 10am. Mostly cloudy, with a high near 38.

    High: 38 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

Detailed Forecast

Tonight
Patchy freezing fog after 4am. Cloudy, with a low around 28. Calm wind.
M.L.King Day
Patchy freezing fog before 10am. Mostly cloudy, with a high near 38. Calm wind.
Monday Night
Mostly cloudy, with a low around 27. Calm wind.
Tuesday
Partly sunny, with a high near 38. Light north wind.
Tuesday Night
Patchy freezing fog after 1am. Partly cloudy, with a low around 26. Calm wind.
Wednesday
Patchy freezing fog before 10am. Partly sunny, with a high near 38.
Wednesday Night
Patchy freezing fog after 4am. Mostly cloudy, with a low around 26.
Thursday
Patchy freezing fog before 10am. Mostly cloudy, with a high near 38.
Thursday Night
A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 27. Chance of precipitation is 10%.
Friday
A slight chance of rain and snow before 10am. Snow level 1400 feet. Partly sunny, with a high near 40.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28.
Saturday
A slight chance of rain and snow. Mostly cloudy, with a high near 40.
Saturday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 27.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 42.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
West Pasco WA
 46.25°N 119.2°W (Elev. 381 ft)
3:20 pm PST Jan 18, 2026
7pm PST Jan 18, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database