Week of Dec 6, 2010, Muskegon, Mi

Currently a closed low positioned over Maine is causing wind vectors and surface differential temps to maintain a lake-effect setup. This effect will be strong at times with accumulation rates of up to an inch per hour in the harbor and SE coastal areas. Snowfall amounts exceeding a foot are possible in localized areas through Tuesday morning. As this low lingers over the eastern shore, flow in the region will have only a short time to take an anticyclonic component and the lower level moisture will decrease due to cold, dry advection from the north, the decrease in lake to air temp differential will degrade the lake effect potential Tuesday afternoon into Wednesday, allowing for momentary clear skies. Late Thursday another clipper moves into the area with associated properties, expected only to bring light snow through Friday and snowfall rates will increase for the weekend in the northern part of the forecast area.