Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast and Breezy

75°F

24°C

Humidity 58%
Wind Speed SW 22 G 32 mph
Barometer 29.92 in (1012.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Mar 3:53 pm EDT
Extended Forecast for

Alcoa TN

  • Tonight

    Tonight: Showers and possibly a thunderstorm.  Low around 39. Breezy, with a southwest wind 15 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 39 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 30 percent chance of showers before 9am.  Cloudy through mid morning, then gradual clearing, with a high near 53. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 53 °F

    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. North wind around 5 mph becoming calm.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 64 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Southwest wind 5 to 10 mph becoming light  after midnight.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 70. Calm wind becoming north around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47. Calm wind becoming southeast around 5 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 76. Breezy.

    High: 76 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am.  Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Low around 39. Breezy, with a southwest wind 15 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Thursday
A 30 percent chance of showers before 9am. Cloudy through mid morning, then gradual clearing, with a high near 53. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 34. North wind around 5 mph becoming calm.
Friday
Sunny, with a high near 64. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 40. Southwest wind 5 to 10 mph becoming light after midnight.
Saturday
Sunny, with a high near 70. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 47. Calm wind becoming southeast around 5 mph.
Sunday
Partly sunny, with a high near 76. Breezy.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 40. Chance of precipitation is 80%.
Monday
Showers, mainly before 8am. High near 51. Breezy. Chance of precipitation is 80%.
Monday Night
A 10 percent chance of showers. Partly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
Alcoa TN
 35.8°N 83.96°W (Elev. 856 ft)
2:26 pm EDT Mar 11, 2026
4pm EDT Mar 11, 2026-6pm EDT Mar 18, 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