PORTLAND, Maine —

Fall and winter are the seasons for nor'easters here in Maine, and November is no stranger to them.

Nor'easters are large-scale low-pressure systems that have strong northeast winds, which give them their name.

They form most often this time of year—fall and winter—due to a large temperature difference between cold Canadian air masses and the warmer ocean waters of the Gulf Stream current.

Nor'easters come in two types: Miller Type A and Miller Type B.

Miller Type A is what you might typically think of with a nor'easter. It forms along the southeastern coast of the U.S. and tracks up the coastline.

Miller Type B storms have two components. A "Colorado low" comes off the Rockies and tracks east. This storm weakens as it approaches the Appalachian Mountains. A seconda

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