Lake effect snow warnings are in effect for parts of New York, Pennsylvania, and Ohio through Sunday into Monday, December 14 into 15, 2025 as Arctic air driven by the polar vortex brings cold temperatures across the eastern U.S.
The season’s first nor’easter began impacting the Mid-Atlantic and Northeast overnight, prompting a State of Emergency in parts of New Jersey and school closures across multiple states. The storm is forecast to rapidly intensify, possibly dropping up to 30 cm (12 inches) of snow across parts of the interior Northeast through Tuesday.
An EF-2 tornado touched down in eastern Erie County, Pennsylvania, at 17:49 LT (21:49 UTC) on June 9, 2025, producing estimated peak winds of 185 km/h (115 mph), a maximum width of 137 m (150 yards), and a path length of 1.7 km (1.06 miles). The tornado caused structural damage to two barns, killed livestock, and moderately damaged a nearby home before dissipating in a wooded area. No human injuries or fatalities were reported.
At least two people died in Pittsburgh on Tuesday, April 29, 2025, after a derecho swept through the area, downing power lines and trees. The storm was part of a larger severe weather system that affected the Mid-Atlantic and Northeast.
A significant ice storm impacted Somerset, Pennsylvania, on February 6, 2025, leaving roads coated in ice, stranding vehicles, and causing power outages.
A powerful multiday lake-effect snow event is set to blanket parts of New York and Pennsylvania, with areas downwind of Lake Ontario and Lake Erie expected to receive up to 90 cm (3 feet) of snow by Sunday, January 5, 2025 creating hazardous conditions across several regions.
A Winter Weather Advisory has been issued for parts of eastern Pennsylvania, including Upper Bucks, Lehigh, and Northampton counties north of Philadelphia, as well as portions of New Jersey, New York, Connecticut, Massachusetts, Vermont, and New Hampshire. The advisory is in effect from late Friday, December 27, to Saturday, December 28, 2024, with freezing rain expected to impact these areas, creating hazardous travel conditions and the potential for ice accumulation.
A winter storm gripping the northeastern United States and Midwest caused chaos along the I-90 corridor in Pennsylvania, where lake-effect snow led to a multi-vehicle crash involving several semi-trucks on December 3, 2024. Conditions along the I-90 will be nearly impossible to travel today and meteorologists are urging to limit or cancel travel as blowing snow in Western Pennsylvania could reduce visibility to zero.
Multi-day lake-effect snow is set to disrupt travel and daily life across parts of Ohio and Pennsylvania starting on Thursday, November 28, 2024, with snow rates of up to 50 mm (2 inches) per hour expected, according to the National Weather Service (NWS).
Widespread severe thunderstorms will develop across the Upper Ohio Valley into southern New England on Sunday, April 14, 2024, the National Weather Service (NWS) warns. The main threats will be damaging winds however, large hail and a few tornadoes can’t be ruled out.
