National Weather Service United States Department of Commerce

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Click a location below for detailed forecast.

Last Map Update: Sun, Aug 17, 2025 at 2:51:04 am EDT

 

The main story is gradually warming temperatures bring a return of low to mid 90s for the valley, and heat index values of around or slightly above 100 degrees. Some isolated showers and thunderstorms will be possible each day as well but should mostly stay in the mountains.
A dry pattern sets up for most of the area through the weekend, with any showers isolated to the mountains. Above normal temperatures will also make a return for the weekend, becoming increasingly muggy early next week.
A dry pattern sets up for most of the area through the weekend, with any showers isolated to the mountains. Above normal temperatures will also make a return for the weekend, becoming increasingly muggy early next week.
A dry pattern sets up for most of the area through the weekend, with any showers isolated to the mountains. Above normal temperatures will also make a return for the weekend, becoming increasingly muggy early next week.

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA02:35Clear10686488CALM-30.13
Andrews-Murphy NC02:22Partly Cloudy7676695CALM-30.14
Chattanooga TN01:53Clear10747293W 3-30.07
Crossville TN02:25Mist46969100CALM-30.12
Dalton GA02:35Clear77272100CALM-30.04
Knoxville TN (McGhee-Tyson)01:53Clear10766979SSE 5-30.06
Middlesboro KY02:35Mostly Cloudy10696897CALM-30.09
Monroe Cnty TN14:25Mostly Clear10897359VRB 597 [HI]30.12
Morristown TN10:30VRB 5-30.10
Oak Ridge TN01:53Clear10716890CALM-30.09
Tazewell Cnty VA02:35Clear10686487CALM-30.17
Tri-Cities TN01:53Partly Cloudy10686796CALM-30.11
Wise VA02:35Clear10686488CALM-30.18
Greeneville, TN02:15Clear10716683CALM-30.10


Local Weather History For August 17th...
In 2010, slow moving storms created flooding northeast TN and southwest VA. 1 drowned.

 

 

Briefing Hydrology Past Weather Events Graphical Hazardous Weather Outlook for East Tennessee East Tennessee Observations
Decision Support Hydrology Past Weather Events GHWO Observations Gridded Forecast
Daily Climate for Middle Tennessee Local East Tennessee Climate Tornado Database Tropical Weather Information NOAA Weather Radio
IDSS Point Forecasts Daily Climate Local Climate Tornado Database Tropical Weather Radio
Daily Climate for Middle Tennessee Probabilistic Data for East Tennessee Virtual Tour of the NWS Morristown Office Skywarn Spotter Training for East Tennessee  
Being Prepared Estar Perparado Probabilistic Virtual Tour Spotter Training