Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

84°F

29°C

Humidity	67%
Wind Speed	Calm
Barometer	30.08 in (1017.2 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	4 Sep 9:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Alcoa TN

Heat Advisory September 4, 10:36am until September 4, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 4, 10:36am until September 4, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Today
High: 97 °F
Hot
Tonight
Low: 75 °F
Mostly Clear
Saturday
High: 95 °F
Sunny then
Slight Chance
T-storms
Saturday Night
Low: 72 °F
Slight Chance
T-storms then
Slight Chance
Showers
Sunday
High: 93 °F
Sunny then
Slight Chance
T-storms
Sunday Night
Low: 69 °F
Slight Chance
T-storms then
Partly Cloudy
Labor Day
High: 90 °F
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 69 °F
Chance
T-storms then
Partly Cloudy

Detailed Forecast

Today

Sunny and hot, with a high near 97. Heat index values as high as 109. Calm wind.

Tonight

Mostly clear, with a low around 75. Calm wind.

Saturday

A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind becoming northwest around 5 mph.

Saturday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

Sunday

A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Calm wind becoming north around 5 mph in the afternoon.

Sunday Night

A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Northeast wind around 5 mph.

Labor Day

A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.

Monday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69.

Tuesday

Mostly sunny and hot, with a high near 91.

Tuesday Night

Partly cloudy, with a low around 69.

Wednesday

Mostly sunny and hot, with a high near 92.