Moderate

* 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.

At 1254 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Wauneta to 6 miles north of Holbrook. Movement was northeast at 45 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... Curtis, Hayes Center, Eustis, Moorefield, Stockville, Medicine Creek Reservoir State Recreation Area, Maywood, Quick, Willow View

An unsettled monsoon pattern, associated with Invest 92W continues to intensify across Pohnpei and Kosrae. Invest 92W is currently rated sub-low by the Joint Typhoon Warning Center, which means development into a significant tropical cyclone is not expected at this time. However, the latest ASCAT pass does show a low-level circulation center with near gale winds to the south of Chuuk. This indicates at least a bit of organization that could bump 92W up to low later

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of east central Ohio, southwest and western Pennsylvania and northern and the northern panhandle of West Virginia. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.