Farther north, the initial thunderstorm development in eastern Missouri quickly developed into a squall line, eventually becoming a derecho that produced many embedded – and generally weak – tornadoes and widespread wind damage across Illinois, Indiana, Kentucky, and Ohio. Springfield, Illinois, which was struck by two tornadoes less than a month earlier, was hit again by tornadoes and damaging straight-line winds of up to , as was the St. Louis, Missouri area. The storm quickly tracked through Indiana, Ohio, and Kentucky with a peak wind gust of in Lexington, Kentucky. Wind damage was reported in the areas Cincinnati, Ohio, Louisville, Kentucky, and Indianapolis, Indiana among other cities.