11.   Meanwhile, clusters of showers and thunderstorms will bubble up over eastern Montana, Wyoming and western South Dakota as a jet stream disturbance lifts gathering humid air.

12.   Meanwhile, isolated severe storms will flare from eastern Virginia to eastern Georgia as a jet stream disturbance lifts increasingly humid air streaming north from the Gulf of Mexico.

13.   One disturbance will lift northward through New England on Thursday.

14.   Over the eastern Great Lakes, scattered thunderstorms will erupt from parts of Ohio to northwest New York as a jet-stream disturbance lifts hot, humid air.

15.   Over two inches of rain will be common by early Monday from eastern Texas to the Tennessee Valley as a potent jet stream disturbance lifts sultry air.

16.   Scattered showers and thunderstorms will develop from Kansas to the Dakotas as the disturbance lifts warm, humid air near the ground.

17.   Showers and a few thunderstorms will press east from central Texas as a jet stream disturbance lifts moist air from the Gulf of Mexico.

18.   Snow showers will develop across this region as a jet stream disturbance lifts cool, moist air.

19.   Showers and thunderstorms will erupt across the lower Mississippi Valley on Tuesday as a sluggish but moderately potent jet stream disturbance lifts humid air from the Gulf of Mexico.

20.   Snow will fall in areas of Washington and northern Oregon as a disturbance lifts chilly air over the region.