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 ESE Tallassee TN

Tonight
Low: 64 °F
Heavy Rain
Wednesday
High: 69 °F
Heavy Rain
Wednesday Night
Low: 64 °F
Heavy Rain
Thursday
High: 71 °F
Chance
T-storms then
Showers
Likely
Thursday Night
Low: 64 °F
Showers
Likely then
Partly Cloudy
Friday
High: 74 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 64 °F
Chance
T-storms then
Mostly Clear
Saturday
High: 74 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 64 °F
Chance
T-storms then
Mostly Clear

Detailed Forecast

Tonight

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 3am, then showers likely and possibly a thunderstorm after 3am. Some of the storms could produce heavy rainfall. Low around 64. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Showers likely, with thunderstorms also possible after 11am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 69. 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. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 64. South 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 chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 71. Southwest wind around 5 mph becoming west in the morning. Chance of precipitation is 60%.

Thursday Night

Showers likely before 8pm. Mostly cloudy, with a low around 64. Northwest wind around 5 mph becoming southeast after midnight. Chance of precipitation is 60%.

Friday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 74. East wind around 5 mph becoming north in the afternoon.

Friday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Calm wind becoming east around 5 mph after midnight.

Saturday

A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 74.

Saturday Night

A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 64.

Sunday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 75.

Sunday Night

A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.

Monday

A 30 percent chance of showers and thunderstorms. Sunny, with a high near 75.

Monday Night

A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.