A significant severe weather system, spanning over 1,000 miles, is forecasted to impact the Eastern United States from Wednesday to Thursday. This system, following a recent tornado threat in the Heartland, is driven by a cold front moving through the Mississippi Valley. The FOX Forecast Center indicates that the exact impacts are somewhat uncertain due to ongoing storms, which might alter atmospheric conditions. However, the Ohio Valley is expected to experience strong storm development due to increased moisture and strong winds.