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Nor'easters refer to specific types of (usually winter, or at least transition season) storms off the East Coast of North America. In general, they occur when cold polar air comes down and mixes with warm and moist air from lower latitudes. It requires a few more complex elements in the atmosphere to get a storm system going, but once it does it can feed on these temperature differences to become stronger. Nor'Easters also can take advantage of relatively warm ocean temperatures off the coast, especially enhanced by the warm Gulf Stream offshore which brings very warm water up from the Caribbean.

The stronger a storm gets, the "deeper" the low pressure at the center (lower, in other words), which helps to enhance the winds, which are a common feature of Nor'easters. As the storm is departing, it will bring a wind out of the northeast to much of the region due to its position to the east, hence the name.

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14y ago

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