"Periods of snow, sleet or freezing rain will cause travel difficulties", forecasters warn.
At 8 a.m. Friday, the water level at the St. Clair gauge had risen to 579.3 feet. "However, the combination of the ice buildup and moderate sleet and snow accumulations will create risky conditions".
Colder temperatures will move in for Sunday, with teens likely as a high. The water was beginning to back up to US 250.
Another thing to keep in mind is that temperatures in New England will drop on Saturday afternoon after the cold front moves through.
"Unfortunately, it'll happen in the dark, or could happen in the dark with the river rising overnight". If it gets stuck, it can form an ice jam.
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Pratt also said a myriad of factors come to play in what might happen, such as how much the river will rise?
The rain is expected to continue into the evening, with the possibility of another thunderstorm; some of the storms could produce heavy rainfall and additional areas of fog before midnight.
An ice jam brought icy flood waters into yards and homes in North Lawrence Friday.
Consequently, the National Weather Service has issued flood watches from eastern OH into northern and western Pennsylvania, New York state and New England.
The extreme cold of the last few weeks has created a massive amount of river ice so far this winter, and temperatures that could top 50 degrees combined with up to 2 inches of rain could cause significant ice jam problems on rivers like the Hudson and Schroon. This story does not necessarily represent the position of our parent company, IBM.