11.   Scattered showers and thunderstorms will dampen the Plains on Sunday as a jet stream disturbance intercepts a flow of humid air from the Gulf of Mexico.

12.   Showers and spotty thunderstorms will cover much of the interior West as a jet stream disturbance intercepts a moist flow of air from the southeast.

13.   Showers and thunderstorms will develop along the Southeast coast as a jet stream disturbance intercepts an old front.

14.   Small clusters of thunderstorms will travel from the Dakotas to the western Great Lakes as several jet stream disturbances intercept sultry air spreading north from the Gulf of Mexico.

15.   Strong thunderstorms will erupt in the middle Mississippi Valley and southwestern lakes as a jet stream disturbance intercepts a flow of humid air from the Gulf States.