Moderate

* WHAT...Heat index values up to 106. * 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 108. * 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...South winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Eastern Alaska Range North of Trims Camp. * WHEN...From 10 AM Sunday to midnight AKDT Monday Night. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Wind gusts will be strongest Sunday night into Monday. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Heat index values of 108 to 111 degrees expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM to 8 PM EDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * 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...Heat index values of 108 to 111 degrees expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM to 8 PM EDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * 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...Heat index values up to 111 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM to 8 PM EDT 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...Heat index values up to 111 expected. * WHERE...Brantley, Coastal Camden, Coastal Glynn, Inland Camden, and Inland Glynn Counties. * WHEN...From 11 AM to 8 PM EDT 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...Heat index values up to 109 expected. * WHERE...Portions of southeast North Carolina and northeast South Carolina. * WHEN...From 11 AM to 8 PM EDT 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.

At 542 PM MDT /442 PM PDT/, Doppler radar was tracking a line of strong thunderstorms extending from 35 miles south of Tarkio to 26 miles west of Darby, or extending from 36 miles northwest of Hamilton to 28 miles west of Hamilton, moving east at 20 mph. HAZARD...Wind gusts up to 40 mph and penny 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... Powell.

At 742 PM EDT, Doppler radar was tracking a line of strong thunderstorms extending from over Magnolia Gardens to near Jacksonboro, moving southeast at 5 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... North Charleston, Summerville, West Ashley, Johns Island, Hollywood, Ravenel, Cottageville, Delemar Crossroads, Jacksonboro and Ashepoo.