On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat Wave in Central U.S.

Dangerous heat will continue in the Nation's mid-section on Tuesday. Combined with high humidity, this will lead to Heat Index temperatures ranging from 100 to 110 degrees Fahrenheit across parts of the Plains and mid-South. Heat Advisories and Excessive Heat Warnings are in effect. If you must be outside, slow down and drink plenty of water.
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Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

79°F

26°C

Humidity 79%
Wind Speed N 5 mph
Barometer 30.02 in (1015.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 28 Jul 12:53 am EDT

Detailed Forecast

Tonight
Mostly cloudy. Lows in the lower 70s. Light winds.
Tuesday
Partly sunny. A slight chance of showers and thunderstorms in the morning...then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s to lower 90s. Light winds. Chance of rain 30 percent.
Tuesday Night
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the lower 70s. Light winds.
Wednesday
Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs in the upper 80s. Light winds.
Wednesday Night
Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the lower 70s. Light winds.
Thursday
Partly sunny with a 50 percent chance of showers and thunderstorms. Highs in the mid to upper 80s.
Thursday Night
Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the upper 60s.
Friday
Sunny. Highs in the mid 80s.
Friday Night
Mostly clear. Lows in the mid 60s.
Saturday
Sunny. Highs in the mid to upper 80s.
Saturday Night
Mostly clear. Lows in the mid 60s.
Sunday
Mostly sunny. Highs in the mid to upper 80s.
Sunday Night
Mostly clear. Lows in the upper 60s.
Monday
Sunny. Highs in the mid to upper 80s.



  Click Map For Detailed Forecast
930 PM EDT MON JUL 27 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database