* WHAT. Heat index values up to 103 expected. * WHERE. Portions of northeast Kentucky, southeast Ohio, and central, northern, southern, and western West Virginia. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 101 are expected. * WHERE. Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. * WHEN. Until 8 PM Friday. * IMPACTS. The combination of excessive heat due to temperatures in the 90s and high humidity will increase the threat of heat illnesses.

At 500 PM EDT, a strong thunderstorm was located over Beechwood Trails, moving northeast at 15 mph. HAZARD. Wind gusts up to 45 mph and pea size hail. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include. Newark, Heath, Granville, Pataskala, Johnstown, Beechwood Trails, Granville South, Marne, New Albany, Jersey, Alexandria, Fredonia, US Route 62 at State Route 661, and State Route 310 at State Route 161. If outdoors, consider seeking shelter inside a sturdy building. To report hazardous weather conditions, go to our website at weather.gov/iln and submit your report via social media, when you can do so safely.

At 458 PM EDT, a cluster of strong thunderstorms were located near Hocking Hills State Park, moving east at 10 mph. HAZARD. Wind gusts up to 40 mph, pea size hail, and very heavy rain. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Visibility will be poor and hydroplaning is possible. Locations impacted include. Logan, Nelsonville, Hocking Hills State Park, Starr, Murray City, Ilesboro, Gibisonville, Lake Logan State Park, Haydenville, Enterprise, Union Furnace, Rockbridge, Oreville, and Carbon Hill. Motorists should slow down and use extra caution. To report hazardous weather conditions, go to our website at weather.gov/iln and submit your report via social media, when you can do so safely.

* WHAT. Heat index values up to 101. * WHERE. Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 103. * WHERE. Portions of northeast Kentucky, southeast Ohio, and central, northern, southern, and western West Virginia. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 100 to 104 expected. * WHERE. Portions of east central Ohio, northwest, southwest, and western Pennsylvania, and northern and the northern panhandle of West Virginia. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 100 to 104 degrees are expected at times this week with variability each day due to clouds and scattered showers and storms, especially early in the week. * WHERE. Portions of north central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Miami Valley Regional Planning Commission and the Regional Air Pollution Control Agency have issued an Air Quality Alert for Montgomery, Miami, Greene, Clark, Preble and Darke counties in the Miami Valley Region, until midnight EDT tonight. Levels of ozone within the region may approach or exceed unhealthy standards. On Alert days, help reduce ozone by taking the following actions: * Carpool, if possible, bike, walk or take the bus instead of driving alone. * Refuel your vehicle after 8 pm. * Do not idle your vehicle, exhaust contributes to air pollution. * Mow your lawn in the evening hours and avoid the use of gas-powered lawn equipment. For additional actions and information, visit miamivalleyair.org or call 937-223-6323

SVRILN The National Weather Service in Wilmington has issued a * Severe Thunderstorm Warning for. Northern Fairfield County in central Ohio. Southwestern Licking County in central Ohio. * Until 515 PM EDT. * At 422 PM EDT, a severe thunderstorm was located near Lancaster, moving northeast at 15 mph. HAZARD. 60 mph wind gusts and penny size hail. SOURCE. Radar indicated. IMPACT. Expect damage to trees and power lines. * Locations impacted include. Lancaster, Pickerington, Heath, Pataskala, Canal Winchester, Baltimore, Buckeye Lake, Hebron, Millersport, Pleasantville, Harbor Hills, Fairfield Beach, Beechwood Trails, Thornport, Etna, Thurston, Kirkersville, Carroll, Rushville, and West Rushville. This includes I-70 in Ohio between mile markers 115 and 136.

At 438 PM EDT, a severe thunderstorm was located near Baltimore, moving northeast at 15 mph. HAZARD. 60 mph wind gusts and penny size hail. SOURCE. Radar indicated. IMPACT. Expect damage to trees and power lines. Locations impacted include. Lancaster, Pickerington, Heath, Pataskala, Baltimore, Buckeye Lake, Hebron, Millersport, Pleasantville, Fairfield Beach, Beechwood Trails, Harbor Hills, Thornport, Etna, Thurston, Kirkersville, Rushville, West Rushville, State Route 158 at State Route 204, and Interstate 70 at State Route 37. This includes I-70 in Ohio between mile markers 116 and 136.

At 457 PM EDT, a severe thunderstorm was located over Baltimore, moving northeast at 15 mph. HAZARD. 60 mph wind gusts and penny size hail. SOURCE. Radar indicated. IMPACT. Expect damage to trees and power lines. Locations impacted include. Heath, Pataskala, Buckeye Lake, Hebron, Beechwood Trails, Harbor Hills, Etna, Kirkersville, Interstate 70 at State Route 37, and Interstate 70 at State Route 13. This includes I-70 in Ohio between mile markers 118 and 136.

The storm which prompted the warning has weakened below severe limits and has exited the warned area. Therefore, the warning will be allowed to expire. Please report previous wind damage or hail to the National Weather Service by going to our website at weather.gov/iln and submitting your report via social media.