Monitoring Tsunami Impacts Across the Pacific; Air Quality Concerns; Dangerous Heat; Critical Fire Weather for the West

Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

86°F

30°C

Humidity	67%
Wind Speed	Calm
Barometer	30.05 in (1016.1 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	30 Jul 11:53 am EDT

More Information:

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

Extended Forecast for

Maryville TN

Heat Advisory July 30, 12:23pm until July 30, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 30, 12:23pm until July 30, 07:00pm
NOW until 7:00pm Wed
Heat Advisory
This Afternoon
High: 93 °F
T-storms
Likely
Tonight
Low: 74 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 90 °F
Chance
T-storms then
T-storms
Likely
Thursday Night
Low: 73 °F
T-storms
Likely then
Chance
Showers
Friday
High: 90 °F
Chance
T-storms then
T-storms
Likely
Friday Night
Low: 70 °F
T-storms
Likely then
Chance
Showers
Saturday
High: 83 °F
Slight Chance
T-storms then
Showers
Likely
Saturday Night
Low: 68 °F
Showers
Likely then
Chance
T-storms

Detailed Forecast

This Afternoon

Showers and thunderstorms likely, mainly after 5pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 105. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.

Thursday

Showers and thunderstorms likely, mainly after 2pm. Partly sunny and hot, with a high near 90. Heat index values as high as 100. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

Friday

A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny and hot, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 70%.

Friday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. Northeast wind around 5 mph. Chance of precipitation is 60%.

Saturday

A slight chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Northeast wind around 5 mph. Chance of precipitation is 60%.

Saturday Night

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

Sunday

A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 84. Chance of precipitation is 50%.

Sunday Night

A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 66.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.

Monday Night

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

Tuesday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.