Summary - large-scale pattern
- Low pressure deepened slowly to 1002 mb while tracking northeast along the east coast.
- Forcing for upward motion over the northern mid-Atlantic was implied by a favorable location within the right entrance region of a strong upper jet.
- The 500 mb trough lifted northeast along the east coast. The trough became negatively tilted but did not close-off.
- The 700 mb low tracked from southwest to northeast across Pennsylvania while deepening slowly.
- A southerly low-level jet developed in the entrance region of the upper jet, transporting large-amounts of moisture north along the east coast.
Slide 12
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