1.   As the moisture interacts with a jet stream disturbance passing overhead, a few of these thunderstorms will become severe, replete with hail and isolated tornadoes.

2.   On Wednesday night, thunderstorms are possible over the lower Mississippi Valley as Gulf moisture interacts with a cold front sweeping east.

3.   This moisture will interact with a sluggish disturbance in the Ohio Valley to produce widespread clouds and patches of showers and thunderstorms.

4.   The tropical moisture interacted with a frontal boundary to produce a large swath of rain in the northeastern United States.