A relatively rare threat for severe thunderstorms exists over densely populated portions of the U.S. Northeast on Thursday, including a risk for tornadoes.
Severe thunderstorms already prompted one tornado warning for parts of New York City during the early afternoon hours. Additional warnings and dangerous storms are likely through sunset.
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A low-pressure system that developed near Washington, D.C., on Thursday morning set the stage for thunderstorms across portions of the Interstate 95 corridor through the day…