Moderate

At 636 PM MDT, Doppler radar was tracking a strong thunderstorm 40 miles southeast of Sheridan, moving northeast 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... Arvada. Monitor the weather situation closely and be alert for threatening weather conditions.

At 636 PM MDT, Doppler radar was tracking a strong thunderstorm 12 miles southwest of Kepler Cascades, which is 12 miles southwest of Old Faithful, moving northeast at 30 mph. HAZARD...Wind gusts up to 50 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could blow around unsecured objects. Minor hail damage to vegetation is possible. This storm will remain over mainly rural areas of northwestern Teton County. If outdoors, consider seeking shelter inside a building.

At 638 PM MDT, Doppler radar was tracking a strong thunderstorm 9 miles west of Linch, which is 16 miles southeast of Kaycee, moving south at 10 mph. HAZARD...Wind gusts of 50 to 55 mph and penny 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. This storm will remain over mainly rural areas of north central Natrona and south central Johnson Counties.

At 637 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from near Moreland to near Fort Hall Bannock Creek Lodge. Movement was northeast at 45 mph. HAZARD...Wind gusts in excess of 45 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Pocatello, Blackfoot, Chesterfield Reservoir, Goshen, Chubbuck, Shelley, Firth, Fort Hall Buffalo Lodge, Rose, Fort Hall Eagle Lodge,

At 838 PM EDT, Doppler radar was tracking a strong thunderstorm over Geneva-On-The-Lake, moving east at 20 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... Ashtabula, Conneaut, Geneva-On-The-Lake, Geneva, North Kingsville, Austinburg, Kingsville, Edgewood, Kelloggsville, and Plymouth Center. If outdoors, consider seeking shelter inside a building.

At 538 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 20 miles southeast of Ennis to 16 miles northwest of Henrys Lake to 7 miles northwest of Kilgore. Movement was east at 25 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 hail damage to vegetation is possible. Locations impacted include...

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and central northwest, southwest, south central and west central Mississippi. * WHEN...For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 11 AM to 8 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat related 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 110 degrees expected. * WHERE...Smith, Clarke, Jasper, Covington, Forrest, Jones, and Lamar Counties. * WHEN...From 11 AM to 8 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat related illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and central northwest, southwest, south central and west central Mississippi. * WHEN...For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 11 AM to 8 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat related illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

At 549 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near Helena to 9 miles northeast of Boulder. Movement was northeast at 10 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 hail damage to vegetation is possible. Locations impacted include... Helena, East Helena, Montana City, Winston, Alhambra, Corbin, Spring