Moderate

* WHAT...Heat index values of 105 to 109 expected. * WHERE...Chatham, Durham, and Wake 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. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat

At 702 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms 9 miles northeast of Felt, or 11 miles west of Boise City, moving north at 25 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... Boise City, Keyes, Kenton, Wheeless, Black Mesa Park, and Felt. If outdoors, consider seeking shelter inside a building. Frequent cloud to ground lightning is occurring with this storm.

At 604 PM MDT, Doppler radar was tracking a strong thunderstorm 35 miles north of Livingston, and is mostly stationary. HAZARD...Wind gusts up to 40 mph and half inch 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... Mainly rural areas of Northern Park County. If outdoors, consider seeking shelter inside a building.

At 607 PM MDT, Doppler radar was tracking a strong thunderstorm 6 miles southeast of Tarkio, or 20 miles southeast of Superior, moving east at 5 mph. HAZARD...Wind gusts up to 40 mph and nickel 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... Mainly rural areas of East Central Mineral County. Monitor the weather situation closely and be alert for threatening

At 608 PM MDT, Doppler radar was tracking a strong thunderstorm 18 miles south of Tarkio, or 29 miles west of Missoula, moving east at 5 mph. HAZARD...Wind gusts up to 40 mph and half inch 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... Mainly rural areas of Southeastern Mineral and Southwestern Missoula Counties.

At 809 PM EDT, Doppler radar was tracking a strong thunderstorm over Williston, or 7 miles northeast of Harkers Island, moving south at 10 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... Harkers Island, Straits, Marshallberg, Smyrna, Davis, Williston, Otway, and Gloucester. If outdoors, consider seeking shelter inside a building.

At 508 PM PDT, Doppler radar was tracking a strong thunderstorm over Ocotillo, moving northeast at 5 mph. HAZARD...Wind gusts up to 50 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... Ocotillo and Coyote Wells. This includes the following highways... CA Interstate 8 between mile markers 10 and 21. CA Route 98 between mile markers 1 and 6.

At 809 PM EDT, Doppler radar was tracking a strong thunderstorm 13 miles south of Williamstown, moving southeast at 15 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Georgetown, Sadieville, Berry, Colemansville, Alberta, Renaker, Mallard Point, Rutland, Boyd, and Stonewall. If outdoors, consider seeking shelter inside a building.

At 809 PM EDT, Doppler radar was tracking a strong thunderstorm near Clyde, or 8 miles northwest of Hartsville, moving south at 20 mph. HAZARD...Wind gusts up to 50 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... Cassatt, Carolina Sandhills Wildlife Refuge, Mcbee, Bethune, Lucknow, Alligator Fire Station, Middendorf, and Ashland.

At 812 PM EDT, Doppler radar was tracking a strong thunderstorm near Clyde, or 8 miles northwest of Hartsville, moving southwest at 15 mph. HAZARD...Wind gusts up to 50 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Hartsville, Lydia, North Hartsville, Clyde, Kellytown, and Carolina Pines Regional Medical Center.