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An upper level wave brought overachieving snowfall amounts to southern portions of Southeast Michigan Sunday afternoon and overnight into Monday morning.  This convective snow event impacted Ann Arbor and up through most of metro Detroit, along with southern Oakland County where 3 to 6 inches fell.  The bulk of the snow occurred Sunday afternoon into the evening where peak intensities likely reached two inches per hour.  The snow intensified along the nose of a 130 kt mid-level jet and the lead edge of a mid-level positive potential vorticity feature.  Satellite apperance also suggested that a gravity wave was highly influential.  This type of event is always a challenge to forecast where exact snowfall amounts will fall given that certain factors have to come into play at the same time.   

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