Surface plot with pressure tendency

Notes:

Examination of surface plots with observed pressure tendency as the front moved east across the area indicated that a surface wave, associated with a maxima of pressure falls, moved northeast along the front from northern Virginia through central and eastern New York during the morning on the 25th.

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Valid Mon 0900 25-Jan-2010

Valid Mon 1200 25-Jan-2010

Valid Mon 1500 25-Jan-2010

Valid Mon 1800 25-Jan-2010

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Slide 6