After days of frigid temperatures, the Northeast is bracing for a whopper of a storm that could dump well over a foot of snow in many areas and create blizzard-like conditions. The storm system has already blanketed parts of the Midwest, as well as Washington, D.C. Chicago got almost 7 inches of snow by Sunday morning, leading to the cancellation of a couple hundred flights at the city’s two airports. In Wisconsin, snow depths in some areas had reached more than 15 inches. Snow is expected to reach Pennsylvania by the afternoon. The National Weather says heavy snow is forecast to fall at an inch to 3 inches an hour on Monday in New York, New Jersey and Connecticut.