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Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Tri-Cities Airport (KPSC)

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

Clear

73°F

23°C

Humidity 56%
Wind Speed E 3 MPH
Barometer 29.73 in (1006.77 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 13 Aug 03:20 AM PDT
Extended Forecast for

3 Miles SW West Pasco WA

Red Flag Warning August 13, 12:00pm until August 13, 09:00pm
Click here for hazard details and duration
Red Flag Warning

  • Overnight

    Overnight: Clear, with a low around 74. Southwest wind around 6 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Southwest wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Southwest wind around 9 mph, with gusts as high as 18 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. Southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 74. Southwest wind around 6 mph.
Wednesday
Sunny and hot, with a high near 98. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
Mostly clear, with a low around 66. Southwest wind 8 to 17 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 88. Southwest wind around 9 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 68. Southwest wind around 10 mph, with gusts as high as 18 mph.
Friday
Partly sunny, with a high near 87.
Friday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW West Pasco WA
 46.23°N 119.23°W (Elev. 407 ft)
Last Update:
2:30 am PDT Aug 13, 2025
Forecast Valid:
3am PDT Aug 13, 2025-6pm PDT Aug 19, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation