Synopsis
The next couple of days will feel like autumn as an upper level trough remains overhead. It will bring cool and crisp conditions just in time for the start of the fall season. A wet weekend is in store for much of the commonwealth. The northwestern areas will receive the highest amount of precipitation with the southeast seeing much less in the way of rain. After this system, a ridge of high pressure will build in but the temperatures will remain cool. \=
Short Term (Now thru Sunday)
After a beautiful day, temperatures won't cool of much tonight due to the warm advection. On Friday, the clouds will move into the state early Friday morning. A front will move itself over PA which will help produce scattered showers throughout central PA. Another plume of moisture will move east out of the Ohio Valley. This ejected moisture will ride up the northwest corner of PA, dumping rain on Pittsburgh and Erie. This heavy rain will contain sporadic downpours through Saturday afternoon. Areas in Bradford, Johnstown, and Clearfield may see light showers. Locations along the eastern half of the state will see showers late Saturday afternoon into the evening.
Long Term (Sunday evening through Tuesday)
The rain will end Sunday morning. Behind the front, strong cold advection will remain throughout Sunday. This will cause leaving high temps state wide to struggle to climb near average for this time of year. An area of high pressure will move into the area, but the 500mb trough will settle in place. This will keep the flow out of Canada and cause us to remain in a cold air mass throughout mid-week.
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