Synopsis
A ridge of high pressure will build into the region early Friday. Behind this ridge, an area of low pressure system will move over southwestern Pennsylvania on Friday night. After this low pressure, another above period with warm weather will return for the first part of the week. However, an upper level trough and associated cold front could move through Pennsylvania late in the day on Tuesday.
Short Term
With clear skies and light northerly winds, temperatures will below freezing in most areas. Temperatures will warm up quickly Friday before clouds increase in the afternoon. An associated surface low pressure system will move into the region Friday night/Saturday morning. Scattered showers and generally cool conditions are expected for the duration of the event.
Long Term
A high pressure system will build into the Eastern U.S. during the day Sunday. Mild and calm conditions will follow and remain into early next week. Temperatures should be above normal as a result. There is a chance for a cold front to pass through the area on Tuesday evening.
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