* WHAT. Heat index values up to 109 expected. * WHERE. Portions of north central and northwest North Carolina, including the Piedmont. * WHEN. From 11 AM this morning to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 107. * WHERE. Cleveland County. * WHEN. Until 8 PM EDT this evening.

* WHAT. Heat index values up to 108. * WHERE. Portions of northeast Georgia, piedmont North Carolina, and upstate South Carolina. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

At 210 PM EDT, Doppler radar was tracking a strong thunderstorm over Abshers, or near Traphill, moving northeast at 15 mph. HAZARD. Wind gusts up to 40 mph and heavy rainfall. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include. Traphill. Mountain Park. Roaring Gap. Stone Mountain State Park. Abshers. Cumberland Knob. and Glade Valley.

* WHAT. Heat index values up to 106. * WHERE. Davidson, Forsyth, Guilford, and Randolph Counties. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 107. * WHERE. Cleveland County. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 108. * WHERE. Portions of northeast Georgia, piedmont North Carolina, and upstate South Carolina. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 107. * WHERE. The Piedmont and foothills of Virginia and North Carolina, including the Roanoke Valley. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

FFWRNK The National Weather Service in Blacksburg has issued a * Flash Flood Warning for. Central Watauga County in northwestern North Carolina. * Until 830 PM EDT Friday. * At 227 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. The expected rainfall rate is 2 to 4 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD. Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE. Radar. IMPACT. Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include. Boone. Sugar Grove. Foscoe. Todd. Lovill. Silverstone. Meat Camp. This includes the following locations. Appalachian State University. This includes the following streams and drainages. Dutch Creek, Beaverdam Creek, Cove Creek, Brushy Fork, Craborchard Creek, Elk Creek, Kirby Branch, George Gap Branch, Beech Creek, Laurel Creek, Hoskin Fork, Laurel Branch and Grassy Creek.