Showers are expected to spread across the Southeast and Mid-Atlantic regions into Monday, bringing with them the potential for occasional heavy downpours and isolated thunderstorms. A slow-moving upper-level system is the primary driver of this weather pattern, continuing to generate precipitation across the Cumberland Plateau and Southeast throughout Sunday. As we move into Monday, the rain will extend its reach, impacting portions of the Mid-Atlantic coast before merging with incoming Pacific moisture. Residents in these areas should be prepared for periods of wet weather and the possibility of localized flooding due to the intensity of the showers.