The Mid-Atlantic and Northeast are preparing for the season's first significant snowfall event, with accumulating snow expected in metro areas near I-95. It is a fast-moving clipper storm expected to arrive overnight.

"An area of low pressure will redevelop off the coast Saturday night into Sunday morning with snow developing by 12 a.m. The snow will mix with rain at times in Zones 4 and 5. All snow is expected to continue through 8 a.m. Sunday and then taper off from northwest to southeast through 1 p.m. Sunday," a meteorologist at NY NJ PA Weather wrote in a report.

NY NJ PA Weather noted that the heaviest snowfall favors interior areas, while coastal zones may see periods of rain before transitioning to snow. Accumulating snow is possible near the I-95 corridor, including areas around Washington, D.C., Philadelphia, and New York City.

Impacts by zone (courtesy of NY NJ PA Weather):

Zone 1: Snow showers, trace to 1 inch

Zone 2: Light snow, 1 to 3 inches

Zone 3: Moderate snow, 3 to 6 inches

Zone 4: Rain changing to snow, 1 to 3 inches

Zone 5: Rain changing to snow, trace to 1 inch

What other meteorologists and weather observers are saying: