Weather Alerts For Hendersonville, TN

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT FRIDAY # DETAILS -------------------- WHAT Heat index values up to 108. WHERE A portion of Middle Tennessee. WHEN Until 9 PM CDT Friday. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Wednesday, August 12, 2026 at 12:14 AM CDT ISSUED BY National Weather Service Nashville TN HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. # AREAS AFFECTED -------------------- Cheatham, Lawrence, Williamson, Bedford, Cannon, Coffee, Davidson, Dickson, Giles, Hickman, Houston, Humphreys, Lewis, Macon, Marshall, Maury, Montgomery, Perry, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Wayne, Wilson Including the cities of Goodlettsville, Hartsville, Lebanon, Lafayette, McEwen, South Carthage, Tullahoma, Clifton, Mount Juliet, La Vergne, Smyrna, New Johnsonville, Shelbyville, Nashville, Gallatin, Erin, Waverly, Linden, Dickson, Springfield, Lawrenceburg, Brentwood, Tennessee Ridge, Carthage, Woodbury, Waynesboro, Dover, Ashland City, Columbia, Lewisburg, Pulaski, Centerville, Franklin, Gordonsville, Hendersonville, Manchester, Lobelville, Clarksville, Murfreesboro, Hohenwald, and Kingston Springs

There is a Marginal Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE NORTHERN/CENTRAL PLAINS TO THE LOWER OHIO VALLEY SUMMARY Thunderstorms with severe gusts and hail will be possible this afternoon and evening across parts of the central and northern High Plains. Damaging gusts and isolated hail will also be possible across parts of the Midwest and Ohio Valley. IA to OH Valley One or more MCSs migrating through enhanced northwesterly flow aloft amid a very moist and unstable airmass is possible again today across the Midwest toward TN. Most forecast guidance suggests an MCS or thunderstorm clusters could be ongoing over IA at the start of the period (12z), with warm advection storms arcing across parts of IL/IN. The early day warm advection storms could develop southeast across the OH Valley, while the IA MCS develop southeast across the Mid-MS/Lower OH Valley through afternoon. The exact evolution of convection that is not yet apparent is uncertain, and how outflow may influence how this activity evolves through the afternoon. Regardless, the overall environmental parameter space will be favorable for a damaging wind and isolated hail risk through early evening. Northern/Central Plains East/southeasterly low-level flow will maintain modest moisture across the Dakotas, increasing with southward extent across NE into northern KS. Near-60 F dewpoints will likely spread westward into eastern CO/WY/MT. Modest moisture beneath steep midlevel lapse rates and 30+ kt effective shear magnitudes will support scattered thunderstorm development across the High Plains. Initial cells will pose a large hail and damaging wind risk. It is unclear how convection will evolve with eastward extent across the region as outflow from prior convection may largely limit stronger destabilization. A developing low-level jet during the nighttime hours will be focused across the southern Plains toward KS/southern NE. This could support some upscale growth potential, but confidence is low. Lower MI into NY/PA/NJ A belt of stronger northwesterly flow aloft will extend from Lower MI into NY/PA today. A seasonally moist/unstable airmass will be in place. Vertically veering wind profiles will foster 35+ kt effective shear magnitudes, while hodographs are fairly elongated. Midlevel lapse rates will remain modest, with MLCAPE around 1000-1500 J/kg expected. Isolated to widely scattered storms will pose a risk for damaging gusts and small hail. TN Valley/Southeast Thunderstorms are expected to develop by midday within a very moist and strongly unstable airmass. Deep-layer northwesterly flow will remain weak, but steep low-level lapse rates and PW values near 2 inches could support isolated wet microbursts with stronger multi-cell clusters.