With a winter storm set to hit the New York City area — along with nearly half of the United States — over the weekend, we’re getting a clearer picture on the timing of when we could see snow start to fall,

Snowfall will begin to accumulate on Saturday afternoon and continue throughout Sunday. Roads will become difficult if not impassable at times.

A Winter Storm Warning remains in effect for the entire Tri-State until noon Monday.

According to the National Weather Service, anyone with errands to run on Sunday should plan on getting them done early. Snow is expected as early as 9 a.m. in some areas, and the storm should be in full swing across the state by early afternoon, according to National Weather Service meteorologist Francis Tarasiewicz.

Update: The latest on Pa. snowstorm: Here’s when it’s supposed to start and stop A storm covering half of the U.S. is likely to bring more than a foot of snow to much of Pennsylvania, forecasters now say.

Montgomery County Department of Transportation crews have begun clearing neighborhood roads after winter storm Fern dropped more than half a foot of snow, sleet and ice in parts of Montgomery County over the weekend.

A winter storm warning is in effect for much of Ohio from Saturday through Monday as heavy snow and dangerous travel conditions are expected.