Winter weather for Saturday

John Cifelli, Meteorologist | January 18, 2020 | Weather
  • Snow spreads west to east Saturday morning across New Jersey
  • Most of the state will see some accumulation
  • Highest totals in northern New Jersey
  • Ends between 7 and 9 p.m.

A winter weather event is unfolding across New Jersey Saturday morning. Low pressure over the Great Lakes is sliding to our north into New England, spreading snow, sleet and rain across the Garden State.

As of 9 a.m., the first band of precipitation was crossing the Delaware Bay into southern New Jersey. The air mass in place ahead of this system is very cold, and very dry. For this reason, I don’t expect most of what is showing up on radar to reach the surface over the next couple of hours. Expect on and off light snow through the morning as these initial waves of precipitation contend with the antecedent dry air mass.

In the early afternoon, steadier snow will move in from west to east across the state. It will fall steady enough in places to make getting around on the roads difficult this afternoon. Surfaces are so cold that  snow will accumulate easily once it overcomes the dry air aloft and reaches us at the ground.

At that point, snow duration and accumulation totals south and east of Route 1 will depend on a race between precipitation moving in and warmer air aloft moving south to north. Far northern New Jersey will only see frozen precipitation throughout the duration of the event, while central and southern New Jersey will see snow mix with sleet and eventually rain. Look for 2 to 4 inches of snow and sleet north of Route 78 (except north and west of Route 202 in Somerset and Hunterdon Counties) and a coating to 2 inches elsewhere.

Everything winds down by 9 p.m., and then the weather story focuses on long stretch of cold air that we will experience. Look for high temperatures in the 30s and lows in the teens through Wednesday night statewide.