GFS 30-hour 500 mb heights and vorticity valid 03/01 06 UTC.

500 mb

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Comparing the GFS 500 mb pattern to the NAM 500 mb pattern at 01 06 UTC: The GFS has the closed low farther southeast than the NAM. Also, note that there appears to be less ridging immediately downstream from the shortwave lifting northeast along the east coast.

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