500 mb heights and 700-300 Div Q

Notes:

Deep layer divergence of Q forecasts from the 12 UTC, November 18 NAM indicated a concentrated area of forcing over Pennsylvania with the passage of the system late on the 18th through early on the 19th.
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Valid Sun 1200 UTC 18-Nov-2007

Valid Mon 0000 UTC 19-Nov-2007

Valid Mon 1200 UTC 19-Nov-2007

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Slide 8