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Summary

• A band of frontogenesis was forecast to focus upward motion across the area early on the 18th.

• A band of frontogenesis was forecast to focus upward motion across the area early on the 18th.

• Instability would be modest, as indicated by a very narrow layer of negative EPV, and mid-level lapse rates less than 7 degrees C per km.

• Maximum lift was forecast to occur in the region of modest instability.

• Temperatures were forecast to be favorable for a deep layer of dendritic snow crystal growth in the lower troposphere.