The western storm system will slowly make its way into the central U.S. by Monday, tapping into moisture from the Gulf and bringing a renewed severe weather and flash flood threat for the region. ????? ???????  

There are widespread reports of downed trees and power lines on roadways from Texas to Ohio, along with isolated reports of damage to structures in Texas.   ????????????  

On Friday, hail -- larger than a tennis ball -- was reported near Marquez, Texas, while widespread hail at or larger than quarter-size reported elsewhere from Texas to New York. ?????  

The storm system that is responsible for the stormy and wet weather for the eastern U.S. on Saturday is part of an "omega block pattern" where two storm systems are locked in between an area of high pressure.   ????? ???????  

Severe weather activity will quickly wind down just before midnight, but the flash flooding threat will linger around through the overnight with any of the heavier downpours that set up. ????????????