A winter storm that blew through our region Saturday dumped more snow than expected.  When they issued a winter weather advisory for the area, the National Weather Service had predicted 3-4 inches would fall.  Mitchell’s official snowfall total, according to the NWS, was 6.4 inches.  There were numerous accidents on I-90 in both directions as well as on highways and city streets.  Light snow is expected on Tuesday, and a bigger system could dump more snow on the region on Wednesday and Thursday.