Lala Impacting Hawaii; Severe Thunderstorm and Flash Flooding Risks; Excessive Heat

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 thunderstorm, heavy rainfall, and flash flooding threats continue from the Midwest to the Mid-Atlantic and across the central High Plains. Record heat continues for areas of the central/southern Plain into the Southeast Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

79°F

26°C

Humidity	77%
Wind Speed	S 5 mph
Barometer	30.03 in (1015.5 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	17 Aug 1:53 am EDT

More Information:

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

Extended Forecast for

6 Miles ENE Greenback TN

Heat Advisory August 17, 02:31am until August 17, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 17, 02:31am until August 17, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
Overnight
Low: 75 °F
Mostly Clear
Monday
High: 95 °F
Sunny then
Showers
Likely
Monday Night
Low: 72 °F
Showers
Likely then
Slight Chance
T-storms
Tuesday
High: 89 °F
Mostly Sunny
Tuesday Night
Low: 67 °F
Partly Cloudy
Wednesday
High: 92 °F
Hot
Wednesday Night
Low: 70 °F
Partly Cloudy
Thursday
High: 92 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Overnight

Mostly clear, with a low around 75. Southwest wind around 5 mph.

Monday

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 95. Heat index values as high as 107. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, with a low around 72. Southwest 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

Mostly sunny, with a high near 89. Heat index values as high as 96. 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 in the evening.

Wednesday

Sunny and hot, with a high near 92. 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 92.

Thursday Night

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

Friday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 90. Chance of precipitation is 50%.

Friday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Saturday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

Saturday Night

A chance of thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

Sunday

Sunny, with a high near 88.