The threat for strong to severe thunderstorms will exist Sunday afternoon and evening across the Four State Region along and ahead of a weak cold front that will shift southeast into the area. Damaging winds, large hail, and locally heavy rainfall will be the main threats with these storms, before they gradually diminish Monday morning. However, additional showers and embedded thunderstorms will become more numerous across the region Monday night through Wednesday north of the front, with the threat for heavy rainfall and localized flooding of low lying, poor drainage areas possible.