A remarkably intense storm system triggered a major tornado outbreak across six states in the Midwest on Wednesday evening, with reports of at least four confirmed tornadoes affecting Iowa, Illinois, Indiana, Ohio, Kentucky, and Louisiana. The National Weather Service has cautioned that tornadoes rated EF3 or higher could still occur, along with damaging wind gusts reaching 75 mph and hail the size of baseballs. Over 23,000 customers in Illinois are currently without power. Additionally, Tropical Storm Arthur poses a risk to Texas and Louisiana, bringing potentially life-threatening flooding and rainfall amounts that may surpass 20 inches in certain areas. Storm evaluations and damage reports are anticipated throughout Thursday.