...Multiple Clipper Systems continues to bring light rain/snow showers to the Great Lakes...
...Showers and thunderstorms will move across the Southern Plains and into the Lower Mississippi Valley...
...Much colder temperatures and rain on the way for the Northern
Intermountain West and Northern Rockies...
A Clipper System will race across the Great Lakes on Saturday before
exiting off the New England coast by Sunday morning. Light rain is
expected to continue across the Great Lakes and eventually move into New England on Saturday. By Sunday, most of the precipitation should be off into Canada with the exception of some left over lake-effect rain showers downwind of the Lower Great Lakes.
On Sunday evening, yet another Clipper will drop down from Central Canada to produce a second round of rain/snow showers for the Upper Great Lakes region.
On the southern edge of this system, a small piece of upper level energy will move across the Southern Plains on Saturday and into the Lower Mississippi Valley on Sunday. This energy, combined with return flow off the Gulf of Mexico and favorable lifting along the front, should fuel rain and thunderstorms for parts of the Southern Plains on Saturday and Sunday, and moving into the Lower Mississippi Valley by Sunday evening.
Meanwhile, surface high pressure will continue to dominate across the Southeast keeping conditions dry and cool through the weekend for the Mid-Atlantic and Southeast regions.
Out west, an upper trough is forecast to drop down from Western Canada and intensify over the region the second half of the forecast period. This should bring much cooler temperatures and the chance for some light rain and higher elevation snows by Sunday evening.