 And with it, the shower and thunderstorm activities well onto the southern plains. Big change in weather expected as far south as about the northern end of the Lone Star State. Then to the central Gulf Coast areas by the end part of the week. And once again, severe weather with showers and thunderstorms. A couple of low-pressure areas will tend to slow up that eastward advance of the boundary. And so the storms will light up over the Tennessee Valley, the northern and central Delta, and to the southeastern states over the second half of the week with a push of cooler temperatures.