Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Bristol / Johnson / Kingsport, Tri-City Regional Airport (KTRI)

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Mostly Cloudy

70°F

21°C

Humidity 97%
Wind Speed Calm
Barometer 30.18 in (1019.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 30 Jun 6:53 am EDT
Extended Forecast for

4 Miles NW Walnut Hill TN

Heat Advisory June 30, 11:00am until July 2, 09:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly sunny, with a high near 89. Northeast wind around 5 mph becoming calm.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 94. Calm wind becoming north around 5 mph.

    High: 94 °F

    Hot

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 2am.  Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm.

    Low: 71 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 94. Calm wind becoming northwest around 5 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 2am.  Mostly clear, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 90.

    High: 90 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 89. Northeast wind around 5 mph becoming calm.
Tonight
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72. Calm wind.
Wednesday
Mostly sunny and hot, with a high near 93. Calm wind.
Wednesday Night
Mostly clear, with a low around 72. Calm wind.
Thursday
Sunny and hot, with a high near 94. Calm wind becoming north around 5 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Calm wind becoming northwest around 5 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 70.
Independence Day
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 90.
Saturday Night
A 40 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 85. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Walnut Hill TN
 36.61°N 82.31°W (Elev. 2139 ft)
7:06 am EDT Jun 30, 2026
7am EDT Jun 30, 2026-6pm EDT Jul 6, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database