Storms to erupt along 1,200-mile-long corridor from nation’s heartland to the Northeast

An eruption of severe weather targeted the northern Plains on Tuesday, and thunderstorm dangers are expected to persist across parts of the Upper Midwest into Tuesday night. As the volatile pattern continues along the northern rim of building heat at midweek, more thunderstorms, some severe, will threaten a 1,200-mile-long corridor from the central Plains to the mid-Atlantic. The greatest risk for thunderstorms will span across a narrow zone…