Low pressure will organize and strengthen over the Mississippi Valley today and move into the Great Lakes tonight. It will be sunny through mid afternoon across the area today, then clouds will begin to increase ahead of the approaching storm system.
Clouds will thicken up this evening with precipitation arriving overnight. The precipitation will likely begin as a period of rain, but as temperatures cool, it could change over to freezing rain or snow late tonight. If the change over to snow does occur, some light accumulations will be possible.
Any rain or mixed precipitation Tuesday morning will change over to snow as a cold front moves eastward across the area. Temperatures will fall throughout the day. Some minor snow accumulations are possible.
It will be windy tonight and Tuesday as well, with gusts in excess of 40 mph possible.
As colder air continues to spread across the area Tuesday night and Wednesday, conditions will become favorable for lake effect snow showers, especially across Erie and Crawford counties. Some additional accumulations are possible.
High pressure is forecast to return to the area on Thursday with only a few lingering snow showers expected.
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