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A powerful cold front slicing into the warm, humid air in the Northeast will spawn a significant severe weather threat Monday from Virginia to upstate New York, including the potential for destructive winds, hail and a couple of brief tornadoes.
The storms are organizing into a dangerous squall line Monday afternoon as the cold front plows into the Northeast and mid-Atlantic states through the early-evening hours.
The Storm Prediction Center has issued Severe Thunderstorm Watches for much of the Northeast and mid-Atlantic until Monday evening.
Areas from northern Virginia northward into Maryland, Delaware, New Jersey, eastern Pennsylvania and upstate New York have the highest threat of severe storms on Monday, but isolated severe storms could spread farther east into parts of western New England as well.
Widespread damaging winds are likely along the squall line. The strong wind gusts could knock down trees and power lines, leading to power outages in some areas.
There's also the potential for supercell thunderstorms to develop ahead of the main line of storms, which could pack damaging wind gusts, isolated large hail and a couple of brief tornadoes.
Monday evening commuters along Interstate 95 from New York City to Philadelphia, Baltimore and Washington might have to contend with these thunderstorms.
The severe weather threat will diminish after sunset as the storms lose their heat and energy source.