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Heavy Wet Snow Tonight

Snow is moving in from the southwest this evening. An area of high pressure located to our northeast is causing dry air ahead of this system, which is an obstacle the snow must overcome before it can begin reaching the ground. Widespread snow will eventually win out after midnight, continuing into Saturday morning. Nearly everywhere across central and southern lower Michigan will be measuring 5 to 8 inches of snow by Saturday morning. The snow will be heavy and wet, which will make it difficult to shovel. It will stick to trees and power lines, so isolated power outages seem possible, but not a major concern. The wet nature of the snow will keep totals close to 6 inches (5-8") and not higher (8-12") as they would otherwise be if the snow was fluffy. Below is a computer model I am liking tonight, which shows total snow by 9am tomorrow.



Total snowfall by 9am Saturday

Saturday morning, a mixture of sleet and snow will move in from south to north, with rain also mixing in, especially south of I-96. The precipitation will become scattered in the afternoon so there will be breaks and not everyone will see the mixture of precipitation. The snow will melt/compact slightly as temperatures briefly warm above freezing tomorrow afternoon. Lake effect snow showers will take over Saturday night and Sunday as much colder air moves in that will last into early next week. An additional 1 to 2 inches of snow is possible Saturday night and Sunday. Winds will increase, especially Saturday night, which may lead to areas of blowing snow and wind chills in the single digits. The National Weather Service has issued Winter Weather Advisories that are in effect from midnight tonight until 7AM Sunday because of this snow:



Winter Weather Advisory in purple. Winter Storm Warning in pink.

Summary


Total snowfall area wide by Saturday morning: 5-8"

Lake effect snow and areas of blowing snow Saturday night.

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