Moderate

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 115 degrees expected. For the Heat Advisory, heat index values up to 112 degrees expected. * WHERE...Portions of southeast Louisiana and southern Mississippi. * WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 11 AM to 8 PM CDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high

At 1121 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Huffman to Bent Mountain to near Oak Level. Movement was northeast at 40 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Roanoke... Blacksburg... Salem... Christiansburg... Martinsville... Vinton... and Bedford.

At 1049 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Parrott to near Pilot to Woolwine to near Penns Store. Movement was northeast at 35 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Roanoke... Blacksburg... Salem... Christiansburg... Radford... Martinsville... and Vinton.

At 1051 AM EDT, Doppler radar was tracking a strong thunderstorm near St. Matthews, or 13 miles north of Brookdale, moving northeast at 30 mph. HAZARD...Wind gusts of 50 to 55 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... McEntire Air Base, St. Matthews, Eastover, Gadsden, Poinsett State Park, Congaree National Park, Fort Motte, and Wedgewood.

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...Portions of Puerto Rico and U.S. Virgin Islands. * WHEN...Until 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. 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

* WHAT...Heat index values up to 106. * WHERE...Autauga, Barbour, Bibb, Bullock, Chilton, Dallas, Elmore, Greene, Hale, Lowndes, Macon, Marengo, Montgomery, Perry, Pickens, Pike, Russell, St. Clair, Sumter, and Tuscaloosa Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and

* WHAT...Heat index values up to 106. * WHERE...Fayette, Jefferson, Lamar, Marion, Shelby, and Walker Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When

At 917 AM CDT, Doppler radar was tracking a strong thunderstorm near Horatio, moving southeast at 15 mph. HAZARD...Pea size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Locations impacted include... De Queen, Horatio, Lockesburg, Oak Grove, Central, Geneva and Bellview. Monitor the weather situation closely and be alert for threatening weather conditions.

* WHAT...High wave action, strong currents, and dangerous swimming conditions expected. * WHERE...Mason and Oceana counties. * WHEN...From 2 PM this afternoon to 8 PM EDT this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures.

At 925 AM CDT/825 AM MDT/, Doppler radar was tracking outflow winds ahead of showers along a line extending from 6 miles northwest of Stapleton to 7 miles southwest of Ringgold to 15 miles north of Sutherland to 7 miles northeast of Keystone to Lemoyne. Movement was southeast at 45 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...