Overview

• The NWS and SPC placed tens of millions under severe weather alerts Saturday from eastern Pennsylvania to southern Maine, with some watches covering more than 43 million people.
• Hazards included damaging winds, large hail, frequent lightning and localized flash flooding, alongside a low but real risk of brief tornadoes.
• A radar-confirmed tornado touched down near Holden in Worcester County, Massachusetts, with damage reported in the area.
• Storms developed after midday and shifted east through the evening, with showers lingering into Sunday before a notably cooler, drier pattern sets up early next week.
• Related storminess led the UK Met Office to issue yellow thunderstorm warnings Sunday for parts of England, including the West Midlands and Herefordshire.