A cold frontal boundary moved through the region the night of February 2nd bringing in another cold air mass as a low pressure system developed over the Appalachians late in the night of the 2nd. By the afternoon of February 3rd the low pressure system moved off the Delmarva Coastline. The frontal boundary continued to move southeast as high pressure moved by the morning of Feb 4th. Even with the push of cold air temperatures remained just warm enough for rain across southern New Jersey and the Delmarva regions with mainly snow from Interstate 295 to the northwest. Precipitation ended late in the afternoon on the 3rd.

A Winter Storm Watch was issued at 718pm on Saturday February 1st for the following areas: New Castle County in Delaware; Cecil County in Maryland; Camden, Burlington, Gloucester, Ocean and Salem counties in New Jersey; Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks and Philadelphia counties in Pennsylvania. At 335am on Sunday, February 2nd, the watch was expanded to include: Hunterdon, Mercer and Monmouth counties in New Jersey and Western Chester, Western Montgomery and Upper Bucks counties in Pennsylvania. At 337pm on February 2nd, the Winter Storm Watch was replaced by a Winter Storm Warning for the following areas: New Castle County in Delaware; Cecil County in Maryland; Camden, Burlington, Gloucester, Ocean and Salem counties in New Jersey; Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks and Philadelphia counties in Pennsylvania. At the same time, the watch was converted to a Winter Weather Advisory for the following areas: Hunterdon, Mercer and Monmouth counties in New Jersey; Western Chester, Western Montgomery and Upper Bucks counties IN Pennsylvania. In addition, the advisory area was expanded to include: Middlesex, Morris, Somerset, Warren and Sussex counties in New Jersey; Berks, Carbon, Lehigh, Monroe and Northampton counties in Pennsylvania.

At 853pm on February 2nd, the Winter Weather Advisory was changed to a Winter Storm Warning for the following areas: Mercer, Middlesex and Monmouth counties in New Jersey and Western Chester and Western Montgomery counties in Pennsylvania. At this time as Winter Weather Advisory was raised for Kent County in Delaware, Kent and Queen Anne’s counties in Maryland and Atlantic and Cumberland counties in New Jersey. At 348am on Monday February 3rd, the Winter Weather Advisory was converted to a Winter Storm Warning for: Hunterdon, Somerset and the coastal sections of Monmouth counties in New Jersey and Berks and Upper Bucks counties in Pennsylvania. At 833am on February 3rd, the Winter Weather Advisory was upgraded to a Winter Storm Warning for Morris and Warren counties in New Jersey and Lehigh and Northampton counties in Pennsylvania.

The Winter Weather Advisory for Kent county in Delaware; Kent and Queen Anne’s counties in Maryland and Atlantic and Cumberland counties in New Jersey were canceled at 134pm on February 3rd. At this time the Winter Storm Warnings were cancelled for New Castle County in Delaware; Cecil County in Maryland; and Salem County in New Jersey. At 311pm on February 3rd, the remaining warnings and advisories were cancelled.

There was a sharp rain/snow line as temperatures were in the low to mid 30's across most of the area. The rain/snow line set-up just a bit southeast of the traditional fall line setting up across Salem, Burlington and Ocean counties in NJ. The snow was a heavy wet snow which accumulated rather quickly due to high snowfall rates.

Snow accumulated quickly on roads and power lines which created hazardous travel conditions across the region, in time for the Monday evening rush hour commute. Numerous accidents were reported across the region. Schools and other activities were cancelled in advance of the storm.

Information contained in this summary is preliminary. More complete and/or detailed information may be contained in subsequent monthly NOAA storm data publications.