Minden City Herald Editor Nathan Marks published a great article about the 1947 snowstorm that absolutely walloped Michigan’s Upper Thumb. It’s an interesting bit of history that many don’t know about.
Lake effect snow from the Great Lakes occurs when conditions of evaporation and cold upper air currents slide over the region. Water retains on to heat more than air. This causes some open water in the Great Lakes to evaporate into the air and warm it. Rising up into the atmosphere this warm, wet air cools as it travels.