Muskegon Mi, December 3 2010

As the wind direction changes from WNW to NNW Friday, sky cover will diminish, the potential for lake effect snow diminishes with the change of the wind after the passing of an upper level shortwave. Flow will briefly become anticyclonic behind this system and ahead of the next system which moves into the area late Friday. Current models place the left exit region of the jet to the southwest of the forecast area, reducing POPS in the northern part of the state and increasing precipitation potential in the southern portion of the state. Lake effect conditions resume Friday evening with the onset of cyclonic flow. The difference in temperature from the lake surface to the air exceeds the 13 degree critical difference, fetch is substantial, exceeding 160km with wind vectors from the northwest, however, with little moisture in the column and decreasing relative humidity expect only light flurries on either side of the dry slot Friday.