Severe Thunderstorms in the Ohio and Tennessee Valleys; Flash Flooding Possible in the Southwest

Scattered damaging winds, isolated severe hail, and a brief tornado or two are possible from the Upper Ohio to Tennessee Valleys during the late afternoon and evening. Across the Southwest, monsoonal moisture will continue to bring heavy rain and a threat for isolated to scattered flash flooding through Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Tri-Cities Airport (KPSC)

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

smoke

75°F

24°C

Humidity 50%
Wind Speed NW 3 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 05 Sep 10:35 AM PDT
Extended Forecast for

Prosser WA

  • Today

    Today: Areas of smoke. Sunny and hot, with a high near 98. North wind around 6 mph.

    High: 98 °F

    Areas Smoke

  • Tonight

    Tonight: Areas of smoke. Mostly cloudy, with a low around 66. Northeast wind around 5 mph becoming light and variable  after midnight.

    Low: 66 °F

    Areas Smoke

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 5pm.  Widespread haze before 11am. Areas of smoke before 8am. Mostly cloudy, with a high near 93. Light and variable wind becoming southwest around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 62. Southwest wind around 6 mph.  Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers.  Mostly sunny, with a high near 88. Southwest wind 5 to 7 mph.

    High: 88 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 11pm.  Partly cloudy, with a low around 57.

    Low: 57 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A 40 percent chance of showers.  Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers.  Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Areas of smoke. Sunny and hot, with a high near 98. North wind around 6 mph.
Tonight
Areas of smoke. Mostly cloudy, with a low around 66. Northeast wind around 5 mph becoming light and variable after midnight.
Saturday
A slight chance of showers, with thunderstorms also possible after 5pm. Widespread haze before 11am. Areas of smoke before 8am. Mostly cloudy, with a high near 93. Light and variable wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind around 6 mph. Chance of precipitation is 30%.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 88. Southwest wind 5 to 7 mph.
Sunday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 57.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 82.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 77.
Tuesday Night
A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 55.
Wednesday
A chance of showers. Partly sunny, with a high near 74.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 53.
Thursday
A chance of showers. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
10:17 am PDT Sep 5, 2025
10am PDT Sep 5, 2025-6pm PDT Sep 11, 2025
 
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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