The National Guard has been called out in several states as a bombogenesis or bomb cyclone makes its way up the East coast of the US.
"it is not the lowest pressure that defines bombogenisis but rather how quickly the pressure within the storm plummets. When the barometric pressure falls at least 0.71 of an inch (24 millibars) in 24 hours, a storm has undergone bombogenesis."
Record or near-record high tides accompanied the cyclone causing severe coastal flooding. Over 4,000 flights have been canceled. Newark and LaGuardia account for about half the total.
CBS News reports Massive Winter Storm Slams East Coast With Snow, Strong Winds.
A massive winter storm roared into the East Coast on Thursday, threatening to dump as much as 18 inches of snow from the Carolinas to Maine and unleashing hurricane-force winds and flooding that closed schools and offices and halted transportation systems. Forecasters expected the storm to be followed immediately by a blast of face-stinging cold air that could break records in more than two dozen cities and bring wind chills as low as minus 40 this weekend.