National Weather Service United States Department of Commerce

Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Click a location below for detailed forecast.

Last Map Update: Sat, Aug 15, 2026 at 11:44:34 am EDT

 

Increasing temperatures and Heat Index values are expected through the weekend and into Monday. Plan ahead and practice heat safety!
Expect scattered showers and storms today. A few storms this afternoon may become strong to severe, with damaging winds the primary threat. Also, very heavy rainfall on already wet ground may lead to localized flooding in areas that see repeated or prolonged periods of heavy rain.
Chances for showers and storms continue this afternoon and evening. Isolated flooding and damaging straight line winds remain possible. It will be very hot through the weekend, with heat index values in many valley locations approaching or exceeding 105 during the afternoons.
Chances for showers and storms continue this afternoon and evening. Isolated flooding and damaging straight line winds remain possible. It will be very hot through the weekend, with heat index values in many valley locations approaching or exceeding 105 during the afternoons.
Chances for showers and storms continue this afternoon and evening. Isolated flooding and damaging straight line winds remain possible. It will be very hot through the weekend, with heat index values in many valley locations approaching or exceeding 105 during the afternoons.
Each observation point is apart of our COOP program (Cooperative Observer Program). Each site has a 24 hour observation period that ends and begins at 8 am local time. Each site records temperature, precipitation, and snowfall data. More information about the COOP program can be found here www.nws.noaa.gov/om/coop/ Data began being collected at: Cades Cover on 01/01/1999 || Mount LeConte on 07/01/1987 || Newfound Gap on 01/01/1991 || Sugarlands Visitor Center on 12/01/1921

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA11:35Overcast10787383WSW 6-30.27
Andrews-Murphy NC11:15Clear10837270W 3-30.26
Chattanooga TN10:53Clear10917559W 3102 [HI]30.19
Crossville TN10:53Clear10847267WNW 8-30.27
Dalton GA11:35Clear10888179CALM108 [HI]30.21
Knoxville TN (McGhee-Tyson)10:53Overcast10857469SW 392 [HI]30.20
Middlesboro KY11:35Partly Cloudy10877772CALM98 [HI]30.22
Monroe Cnty TN11:15Clear10868084VRB 3101 [HI]30.21
Morristown TN11:15Clear8848088CALM97 [HI]30.22
Oak Ridge TN10:53Mostly Cloudy10847676CALM93 [HI]30.21
Tazewell Cnty VA10:15Fog \ Lightning Observed1/47171100WSW 6-30.30
Tri-Cities TN10:53Mostly Cloudy10817376VRB 3-30.23
Wise VA11:35Mostly Cloudy10787794WSW 6-30.31
Greeneville, TN11:1510807378W 6-30.24


Local Weather History For August 15th...
Lightning destroyed a barn near Camp Creek in Greene County in 2002. $25,000 damage.

 

 

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