Expected

* WHAT...Dangerously hot conditions with heat index values up to 115. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Isolated showers and thunderstorms during the afternoon could provide relief in some areas. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. expected. * WHERE...Coastal and urban areas of the lower elevations of Puerto Rico and the U.S. Virgin Islands. * WHEN...From 10 AM this morning to 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.

At 113 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles northwest of Hayes Center to Medicine Creek Reservoir State Recreation Area to near Loomis. Movement was northeast at 50 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Strong thunderstorms will be near... Bertrand and Loomis around 120 AM CDT. Elwood and Smithfield around 125 AM CDT.

* WHAT...Heat index values up to 108. * WHERE...In Oklahoma, Blaine, Caddo, Comanche, Cotton, Jackson, and Tillman Counties. In Texas, Archer, Clay, Wichita, and Wilbarger Counties. * WHEN...Until 7 PM CDT Sunday. * 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 107. * WHERE...Harper, Woods, and Woodward Counties. * WHEN...Until 7 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. 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

* WHAT...Heat index values up to 106. * WHERE...In Oklahoma, Greer, Harmon, and Kiowa Counties. In Texas, Baylor, Foard, Hardeman, and Knox Counties. * WHEN...Until 7 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...Heat index values up to 109. * WHERE...Portions of central, east central, northern, northwest, southeast, and southern Oklahoma. * WHEN...Until 7 PM CDT Sunday. * 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.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Maryland, Allegany and Garrett Counties. In West Virginia, Hampshire and Mineral Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Heat index values 108 to 110 expected. * WHERE...Portions of central, south central, and southwest Louisiana. * WHEN...From 11 AM this morning to 7 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...Visibility in some areas will drop to just a few hundred feet in dense fog. * WHERE...Bedford, Blair, Cambria, Fulton, Huntingdon, and Somerset Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Hazardous driving conditions due to reduced visibility. Consider allowing extra time to reach your destination.