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Published December 18, 2012, 12:00 AM

Radar map

National Weather Service radar picked up on small snow plumes created by snow-making operations on two ski areas near Duluth on Monday night into Tuesday morning. The more southern one is Mont du Lac. The northern one (toward the center of the image) is Spirit Mountain. Light southwest winds directed the plumes from southwest to northeast. Because they were making snow, the fine snow crystals activated low clouds to create microscale snow bands. About an inch of snow fell where the plumes lined up, but nowhere else. People in West Duluth and the Fond du Lac neighborhoods had to clean their cars off. (Photo from National Weather Service Duluth)
Read the article: Duluth-Superior ski hills seed clouds with snow