A late-season winter setup could deliver significant snow to parts of the Mid-Atlantic around St. Patrick’s Day week, potentially disrupting travel and outdoor events just days before spring begins.
According to the NOAA Climate Prediction Center’s 8-14 day forecast, the period from March 15 to March 21 favors above-normal precipitation over the Mid-Atlantic, while temperatures trend below seasonal averages across much of the eastern United States. The pattern forms as a powerful cold front moves south from Canada, extending from the Northeast through the Great Lakes and down to the Southeast.
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This configuration may allow storm systems traveling down the East Coast to dip into colder air, creating a window for heavy snowfall in eastern Pennsylvania and northern New Jersey if temperatures remain low enough.
Cities like Philadelphia, Allentown, Trenton, Newark, and their surrounding suburbs may face the most severe consequences if a coastal system strengthens during the period.
If storms form, drivers should closely monitor conditions on important traffic corridors like Interstate 95, Interstate 76, Interstate 78, and the New Jersey Turnpike. Heavy snow can quickly impair visibility and create dangerous driving conditions, particularly during morning and evening journeys.
The timing is important since daylight saving time begins this weekend, but winterlike weather may still reach the Mid-Atlantic even as the first day of spring arrives later that week.
Forecasters will update storm timing and track over the next several days, and winter weather advisories or watches may be issued if the colder pattern coincides with developing coastal storms.
