Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

81°F

27°C

Humidity	72%
Wind Speed	SW 6 mph
Barometer	30.05 in (1016.0 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	17 Aug 8:53 am EDT

More Information:

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

Extended Forecast for

4 Miles WNW Seymour TN

Heat Advisory August 17, 09:01am until August 17, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 17, 09:01am until August 17, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
Today
High: 94 °F
Sunny then
Showers
Likely
Tonight
Low: 73 °F
Showers
Likely then
Slight Chance
T-storms
Tuesday
High: 88 °F
Partly Sunny
Tuesday Night
Low: 67 °F
Partly Cloudy
Wednesday
High: 91 °F
Hot
Wednesday Night
Low: 70 °F
Partly Cloudy
Thursday
High: 91 °F
Chance
Showers then
Chance
T-storms
Thursday Night
Low: 70 °F
Chance
T-storms

Detailed Forecast

Today

A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 73. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday

Partly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 67. North wind around 5 mph becoming calm.

Wednesday

Sunny and hot, with a high near 91. Calm wind.

Wednesday Night

Partly cloudy, with a low around 70. Calm wind.

Thursday

A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.

Thursday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Friday

A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 90. Chance of precipitation is 60%.

Friday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

Saturday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

Saturday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.

Sunday

Mostly sunny, with a high near 87.