* 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 415 PM EDT, a strong thunderstorm was located near New Holland, moving east at 20 mph. HAZARD. Very heavy rain. SOURCE. Radar indicated. IMPACT. Visibility will be poor and hydroplaning is possible. Locations impacted include. Circleville, Kingston, Logan Elm Village, Frankfort, Clarksburg, Pickaway County Airport, State Route 138 at US Route 22, Andersonville, and Austin. If outdoors, consider seeking shelter inside a sturdy building. 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.

At 404 PM EDT, a strong thunderstorm was located near North Folk Village, moving northeast at 20 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. Chillicothe, Kingston, North Folk Village, Londonderry, Laurelville, Adelphi, Massieville, Mooresville, Hallsville, Scioto Trail State Park, and Whisler. 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.

* 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. Southeastern Franklin County in central Ohio. Northwestern Fairfield County in central Ohio. Northeastern Pickaway County in central Ohio. * Until 430 PM EDT. * At 345 PM EDT, a severe thunderstorm was located over Ashville, 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, Canal Winchester, Groveport, Ashville, South Bloomfield, Royalton, Lithopolis, Fox, Carroll, Fairfield County Airport, East Ringgold, Duvall, Slate Run Metro Park, and State Route 674 at State Route 188.

At 401 PM EDT, a severe thunderstorm was located over Ashville, 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, Canal Winchester, Groveport, Ashville, South Bloomfield, Royalton, Lithopolis, Carroll, Fairfield County Airport, East Ringgold, Duvall, Slate Run Metro Park, and State Route 674 at State Route 188.

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 416 PM EDT, a severe thunderstorm was located near Canal Winchester, 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, Canal Winchester, Groveport, Royalton, Lithopolis, Carroll, Fairfield County Airport, and Slate Run Metro Park.

SVRILN The National Weather Service in Wilmington has issued a * Severe Thunderstorm Warning for. Southwestern Hocking County in central Ohio. Southeastern Pickaway County in central Ohio. Northeastern Ross County in south central Ohio. * Until 500 PM EDT. * At 411 PM EDT, a severe thunderstorm was located 7 miles southeast of Kingston, moving northeast at 20 mph. HAZARD. 60 mph wind gusts and penny size hail. SOURCE. Radar indicated. IMPACT. Expect damage to trees and power lines. * Locations impacted include. Hocking Hills State Park, Laurelville, Adelphi, Tarlton, South Bloomingville, Hallsville, and Whisler.