A mix of snow, sleet, and freezing rain fell across the region last night. Temperatures today have warmed sufficiently in most places to end the ice threat. There are a few colder valleys across central PA and NY that will hold the cold air la little longer, but for the majority of the region, rain showers will be the rule through this afternoon.
A broad, moist southwesterly flow will remain in place across the region through the first half of the week as a series of storm system track northeastward through the Great Lakes. The eastern Great Lakes will reside mainly in the warm sector with periods of rain showers expected along with very mild temperatures.
This warmer pattern will be brief. An arctic cold front is forecast to cross the eastern lakes on Wednesday. Heavy rain, gusty winds, and even a few thunderstorms will accompany this front as it moves through. The heavy rain will arrive in lower MI and western OH early Wednesday, then spread east across the area during the day. Rainfall amounts with this system could be heavy, especially across OH and MI. Some flooding will be possible in these areas.
It will be very mild across the region ahead of this front. Behind the arctic front, much colder air will cause temperatures to drop sharply. Rain showers will change to snow shower Wednesday night. The snow showers will gradually transition to lake effect snow showers on Thursday.
The lake effect snow showers will continue to the southeast of the lakes into the weekend. A clipper is forecast to move southeastward through the Great Lakes late Saturday or Sunday bringing widespread snow showers to the region.
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