A is a powerful macro-scale extratropical cyclone that tracks along the East Coast of North America. It is defined by its strong winds blowing from the northeast, which result from a low-pressure system moving northward along the coast. While they can occur year-round, these storms are most frequent and intense between September and April, often bringing heavy snow, torrential rain, and hurricane-force winds to the heavily populated I-95 corridor. Formation Mechanics
The polar and tropical jet streams often merge, providing additional energy to the system. 3. Nor'easter
Some nor'easters undergo "bombogenesis" (becoming a " bomb cyclone "), where pressure drops at least 24 millibars in 24 hours, leading to rapid intensification. Core Characteristics What Is a Nor'easter? | NESDIS - NOAA A is a powerful macro-scale extratropical cyclone that
Nor'easters thrive on the extreme temperature contrast between two air masses. Formation Mechanics The polar and tropical jet streams
This temperature gradient creates instability, fueling a low-pressure center that intensifies as it moves toward New England and the Canadian Maritimes.
Cold, dry arctic air from Canada pushes south and meets warm, moist air from the Gulf Stream over the Atlantic Ocean.
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