We're getting to that time of the year when the chance for nor'easters increase. A nor'easter is a coastal storm that forms off the East Coast and often brings significant snow to portions of the Northeast and Mid-Atlantic.
Nor'easters form often along a gradient between cold air associated with a trough over land and warmer air over the oceans. There is also a lot of energy over the western Atlantic ocean because the water is still relatively warm from the summer. Often when you get this gradient and warm waters, the conditions are favorable for the development of a coastal storm.
These storms move up the East Coast of the U.S., pulling in moisture from the ocean into the cold air over land, creating a combination for significant snow. The ocean energy also makes the environment prime for rapidly-strengthening storms. That's why nor'easters are often known for producing blizzards. Now you know the science behind nor'easters.