11.   Lighter showers will spread across the Great Lakes states Friday night.

12.   Lighter showers will spread east from Alabama to the Carolinas later Saturday and Saturday night.

13.   Lighter showers will also spread into Nevada and southern Oregon.

14.   Later in the day, these showers will spread northeast into Oklahoma and Missouri.

15.   Meanwhile, a jet stream disturbance will cause showers to spread east across the Great Lakes on Tuesday.

16.   Meanwhile, lighter showers will spread across the Tennessee Valley and southern Appalachians.

17.   Meanwhile, showers will spread over the interior West, with snows in the higher elevations of the Sierra and Rocky mountains.

18.   Meanwhile, showers will spread toward Florida from southern Mississippi as a low pressure system grinds eastward.

19.   On Tuesday, showers will spread as far north as central Pennsylvania as humid air flows inland from the western Atlantic.

20.   Showers spread from the Middle West over the Appalachians during the night.