A winter storm is forecast to dump up to five inches of snow and ice across much of Long Island, likely snarling the Monday morning rush hour commute, experts say.

The National Weather Service issued a winter storm warning for northern Nassau and northwestern Suffolk counties, where two to five inches is expected, and a winter storm advisory for southern Nassau, southern Suffolk and the Twin Forks, where one one to four inches of snow is predicted. Both the warning and the advisory are in effect from 7 p.m. Sunday to 6 p.m. Monday.

“I am urging all New Yorkers to exercise caution when traveling,” Gov. Andrew Cuomo said. “I encourage all New Yorkers to plan ahead for delays and remain safe throughout the storm.”

The flakes are forecast to start falling early Monday morning before the storm is expected to change into mix of snow, sleet and freezing rain before noon. The storm is likely to cause travel delays across the tri-state area.

Temperatures are forecast to be in the high 20s and low 30s with wind chills as low as the teens when the storm hits, which is expected to cause icy road conditions through the Monday evening rush hour commute.

Once the storm passes, Tuesday is forecast to be sunny in the 20s before a slight chance of snow showers moves in Wednesday into Thursday. Next weekend is so far forecast as partly cloudy in the 20s with another slight chance of snow next Sunday.

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