Moderate

* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Beaverhead - Lemhi Highlands and Arco/Mud Lake Desert. * WHEN...From 11 AM this morning to 7 PM MDT this evening. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

As some rain showers depart east of the area this morning, patchy dense fog and low clouds are developing across portions of northern Ohio. This fog and low clouds are allowing for variable visibility across the area, including visibility as low as one- quarter of a mile in sheltered locations. Fog may increase in coverage later this morning. If traveling across the area, drivers should remain alert for rapid changes in visibility and use low-beam headlights.

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. * WHEN...Until 10 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...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason and Oceana counties. * WHEN...From Sunday morning through Sunday 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 127 AM CDT, Doppler radar was tracking a strong thunderstorm over Mccune, or 12 miles northeast of Oswego, moving southeast at 35 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... Pittsburg, Frontenac, Columbus, Girard, Cherokee, Weir, Sherman, Scammon, Chicopee, Mccune, West Mineral, Roseland, Melrose, Beulah,

At 1252 AM CDT, Doppler radar indicated strong thunderstorms along a line extending from 3 miles east of Avant to 6 miles southwest of Sperry to 7 miles south of Mannford. Movement was east at 25 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down small tree limbs and blow around unsecured objects. Locations in or near the path include... Tulsa... Broken Arrow... Sand Springs... Owasso...

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Portions of central and south Mississippi, southeast Arkansas, and northeast 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

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Carroll and Grenada Counties. * 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

At 1236 AM CDT, Doppler radar indicated strong thunderstorms along a line extending from 3 miles northwest of Treece to 4 miles west of Welch. Movement was southeast at 30 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down small tree limbs and blow around unsecured objects. Locations in or near the path include... Miami... Vinita... Baxter Springs... Commerce... Fairland... Afton...

* WHAT...Heat index values up to 110 expected. * WHERE...The I-35 corridor and Coastal Plains. * WHEN...From noon today to 7 PM CDT This evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. 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 heat stroke.