1.   As the jet stream disturbance intercepts an unusually sultry air mass, scattered severe thunderstorms will erupt from the Red River Valley to the middle Mississippi Valley.

2.   A complex of thunderstorms will ignite across the eastern Great Lakes Monday morning as a jet stream disturbance intercepts a humid air mass.

3.   Cloudy skies will cover much of the nation from the Rockies to the East Coast as several jet stream disturbances intercept humid air from the Gulf of Mexico.

4.   Elsewhere, showers will develop in the northern Plains as a jet stream disturbance intercepts warm, humid air already in place.

5.   Farther south, showers will develop in the southern and central Appalachians as the disturbance intercepts a moistening flow of air from the Atlantic Ocean.

6.   Heavier rain will develop across western Texas late on Wednesday as the disturbance intercepts a flow of humid air from the Gulf of Mexico.

7.   Heavy rain and strong thunderstorms will drench parts of the Deep South as a jet stream disturbance intercepts humid air near the surface.

8.   Heavy rain will soak Florida on Saturday as a jet stream disturbance intercepts a flow of humid air from the Atlantic Ocean.

9.   Isolated strong afternoon storms will erupt in the northern Plains as an approaching jet stream disturbance intercepts humid air.

10.   Powerful storms will erupt in the northern Plains on Sunday as a jet stream disturbance intercepts a northward flow of humid air.