22/00 UTC WRF sea-level pressure forecast valid 23/00 UTC.

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At the surface, the WRF was forecasting low pressure developing just south of the Delmarva peninsula. The heaviest 3 hour QPF (0.1 to 0.2 inches) was located in a band across central New York. Meanwhile, very light amounts were forecast across Pennsylvania, indicating that a dry slot would be affecting that area.