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

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

78°F

26°C

Humidity	85%
Wind Speed	Calm
Barometer	30.02 in (1015.2 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	12 Aug 8:53 pm EDT

More Information:

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

Extended Forecast for

4 Miles SSW Townsend TN

Tonight
Low: 67 °F
Heavy Rain
Wednesday
High: 78 °F
Heavy Rain
Wednesday Night
Low: 68 °F
Showers
Likely
Thursday
High: 79 °F
Chance
Showers then
Showers
Likely
Thursday Night
Low: 67 °F
Showers
Likely then
Partly Cloudy
Friday
High: 83 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 68 °F
Chance
T-storms then
Mostly Clear
Saturday
High: 83 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 67 °F
Chance
T-storms then
Mostly Clear

Detailed Forecast

Tonight

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 67. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 78. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Mostly cloudy, with a low around 68. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Southwest wind around 5 mph becoming west in the afternoon. Chance of precipitation is 60%.

Thursday Night

Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 67. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

Friday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.

Friday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Calm wind becoming east around 5 mph.

Saturday

A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 83.

Saturday Night

A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67.

Sunday

A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 83.

Sunday Night

A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 67.

Monday

A 30 percent chance of showers and thunderstorms. Sunny, with a high near 84.