BOMBOGENESIS!

This term refers to a low pressure area whose minimum central air pressure plummets by at least 24 millibars in 24 hours. By feasting off of intense atmospheric disturbances as well as sharp differences in air masses and ocean temperatures, including the moisture rich, near record-warm Gulf Stream waters, the upcoming tempest is projected to exceed that intensification rate by several more millibars in 24 hours. This intensification rate, if it comes to pass, would be astonishing.

A huge storm is developing, with a cold wave close behind.

Source: A meteorological ‘bomb’ is about to go off near the East Coast