Lake effect snow showers pick up Saturday night, continuing into Sunday
A departing low pressure system (centered south of northern Michigan Saturday evening) and a sweeping cold front will usher in colder air Saturday night and into Sunday - helping kick off the lake effect machine once again.
For Saturday night, lake effect snow showers will be persistent in the typical N-NW snow belts. Winds will be out of the north throughout the first half of the overnight, concentrating lake effect for those W of I-75 in the Upper Peninsula and W of US-131 in the Lower Peninsula (mainly in the Grand Traverse Bay Region). Throughout the second half of the night, winds will shift towards the northwest. This will begin to concentrate lake effect snow showers for the normal NW snow belts in both the Upper and Lower Peninsula. Overall, snowfall amounts on the order of 1-2" are expected in these areas overnight. While winds will shift gradually from the N to the NW overnight, wind speeds will remain consistent - 10-20 mph, with gusts upwards of 25-30 mph. With this, some roads are likely to become slick overnight in the mentioned areas.
On Sunday, lake effect snow showers will continue for those in the typical NW snow belts in the Upper and Lower Peninsula. An additional 2-3" is expected in these areas. Otherwise, mostly cloudy skies will be the general theme, but some sunshine is possible for those that are fairly far from Lake Michigan/Superior.
Towards Monday, high pressure to the south of the Great Lakes will shift winds to the southwest - ending any linger lake effect snow showers and allowing for a rather quiet day. With winds out of the SW, temperatures will be a tad warmer on Monday too, with many topping out near the 40 degree mark.
Quiet weather only lasts a day, however, as another 'clipper' system tracks towards northern Michigan on Tuesday. A mixture of rain/snow will quickly change over to snow by the end of the day, as cold air works behind the system. This colder air will kick off more lake effect snow showers.
The good news is that, as of now, Thanksgiving appears to be on the tranquil side of things. For now, partly sunny skies and temperatures in the 30s appears to be the case this upcoming Thursday.
-Meteorologist Blake Hansen