A nor’easter is forecast to blanket Long Island in two to five inches of snow, a mix of sleet, freezing rain and ice this weekend, with accumulations depending upon the storm’s path.

The National Weather Service issued a winter weather advisory from 12 a.m. to 6 p.m. Saturday for the New York metro area including most of LI, except for the East End.

“This will be a fast moving system,” the agency’s Upton-based meteorologists said in a statement. “There is still some uncertainty with the precipitation type and amounts due to the storm track and intensity.”

The storm, which is expected to impact much of the Northeast on its way up from the South, is predicted to start as heavy snow, switch to a wintry mix and then taper off as snow again, forecasters said.

Visibility will be a half mile or less at times and roads will be slippery, making travel potentially dangerous. The storm may cause tree limbs to fall on utility wires, possibly causing power outages.

Temperatures will be in the high 20s early Saturday morning and will reach a high in the low 30s in the afternoon, meaning the snow should stick.

Once the storm passes, sunny skies with temps in the high 30s are forecast for Sunday before a 50-percent chance of snow returns Monday.

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