A significant winter storm is starting to organize to the south this morning. This storm will bring snow, sleet, rain, strong winds, and coastal flooding to the region this afternoon through tomorrow morning.
As the area of low pressure develops to the south of the region this morning, clouds will increase as rain and snow develop this afternoon. The winter storm will begin to impact the region after 2 PM with the precipitation shield spreading northward through the afternoon and evening. For southern New Jersey and Delaware in zones 1 and 2, the precipitation will start off as rain and remain as rainfall until tomorrow morning, see map for timing details. Further north in zones 3 and 4, a mixture of snow, sleet, and rain is expected with a high threat for significant sleet accumulation, especially in zone 4. In the zone labeled 5, bands of intense snowfall will be possible with snowfall rates of 1″ to 3″ per hour. In these areas, snowfall will likely exceed a foot and may reach up to 20″ in some isolated locations, likely for higher elevations. Temperatures will rise into the mid to upper 20s over the interior, lower to mid-30s in the Philadelphia and New York City metropolitan area, and upper 30s to mid-40s for southern New Jersey.
The storm will exit tomorrow with all locations changing over to snow from northwest to southeast. The snow will exit the region from 10 AM to 3 PM on Thursday from west to east. Winds will veer to the northwest at 10 to 20 mph with temperatures falling through the 30s and into the 20s.
Other impacts from this storm include strong winds at 15 to 30 mph with gusts over 40 mph at times, especially on the coast. Visibility will fall below a mile at times, especially between 10 PM Wednesday through 10 AM Thursday. Minor to moderate coastal flooding will be a threat as well, especially on the New Jersey coast.
High pressure will produce clear skies to scattered clouds on Friday with winds from the northwest at 5 to 15 mph. Temperatures on Friday will range from the single digits to mid-10s over the interior and upper 10s to mid-20s along the coast for lows and mid-20s to lower 30s for highs.
A series of weak cold fronts and troughs will pass through the region Saturday through Wednesday with scattered clouds and a few isolated rain and snow showers. Locally dense fog will be a concern, especially in the evening through early morning hours. Temperatures on Saturday will range from the single digits to mid-10s over the interior and lower to mid-10s along the coast for lows and lower to mid-30s for highs. Temperatures on Sunday will range from the mid to upper 20s for lows and mid-30s to lower 40s for highs. Temperatures on Monday and Tuesday will range from the mid-20s to lower 30s for lows and upper 30s to mid-40s for highs. Temperatures on Wednesday will range from the upper 10s to mid-20s for lows and upper 30s to mid-40s over the interior and mid-40s to lower 50s along the coast.