Philadelphia, Pennsylvania – A complex and potentially disruptive winter storm is set to impact eastern Pennsylvania, much of New Jersey, and northern Delmarva beginning Friday afternoon, bringing a dangerous mix of snow, sleet, and freezing rain that could significantly affect post-Christmas travel across the region.
Forecasters from the National Weather Service Philadelphia/Mount Holly say the storm will evolve rapidly, with conditions deteriorating through Friday evening and overnight before gradually improving Saturday morning.
Winter storm warnings and advisories in effect
Winter Storm Warnings and Winter Weather Advisories are in place from Friday afternoon through Saturday morning as precipitation spreads from west to east. Officials warn that even small shifts in temperature could dramatically change impacts over short distances.
Areas under warnings face the greatest risk of heavy snow or ice accumulation, while advisory areas are expected to see mixed precipitation capable of creating slick roads and reduced visibility.
Heavy snow expected north of Interstate 80
Snow is forecast to begin Friday afternoon, especially across eastern Pennsylvania and northern New Jersey near and north of Interstate 80. In these areas, five to eight inches of snow are expected, with localized totals approaching ten inches possible.
During the Friday evening hours, snowfall rates could reach one to two inches per hour, a pace that can quickly overwhelm road crews and leave roads snow-covered within minutes. Reduced visibility and rapidly changing road conditions are likely during this period.
Snow changing to sleet and freezing rain farther south
Farther south, including the Interstate 78 corridor, the Interstate 95 corridor near Philadelphia, and much of central and southern New Jersey, snow is expected to transition to sleet and freezing rain Friday evening into Friday night.
Ice accumulations of up to one-tenth of an inch are possible. While this may sound minor, forecasters stress that even thin ice can make untreated roads, sidewalks, bridges, and overpasses extremely hazardous.
Mostly rain for parts of southern New Jersey and Delmarva
Across southern New Jersey and much of the Delmarva Peninsula, precipitation may change to mostly rain after a brief period of snow. While this will limit overall snow accumulation, the initial transition phase may still produce slick conditions before temperatures rise enough for plain rain.
Travel impacts likely during peak post-holiday hours
The most dangerous travel window is expected Friday evening through early Saturday morning, coinciding with heavy post-holiday traffic. Officials warn that bridges and elevated roadways will freeze first, increasing the risk of spin-outs and crashes.
Drivers should anticipate delays at airports, along major highways, and on secondary roads, especially where snow quickly changes to ice.
Safety guidance for residents and travelers
Residents are urged to delay unnecessary travel if possible, especially Friday night. If travel cannot be avoided, motorists should slow down, increase following distance, and carry emergency supplies. Pedestrians should use caution on sidewalks and steps, which may ice over quickly during freezing rain.
Snow and ice are expected to taper off Saturday morning, though lingering slick spots and cleanup efforts may continue into midday.
What happens next
While the storm should gradually weaken by Saturday, forecasters emphasize that lingering cold air may keep untreated surfaces icy longer than expected. Officials recommend monitoring updated forecasts and road condition reports as the system moves through.
Stay informed and plan ahead. Share your experiences or local conditions in the comments below.
