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The Appalachian temperate rainforest has a cool and mild climate and meets the criteria of temperate rainforests identified by Alaback. [1] Temperature and precipitation are extremely variable with elevation, with rainforest conditions usually but not always concentrated around spruce–fir forests at higher elevations.
The Appalachian Mountains largely shield New York City and Philadelphia from picking up any lake-effect snow, though ocean-effect snows are possible near Cape Cod. [64] The Finger Lakes of New York are long enough for lake-effect precipitation. Lake-effect snow from the Finger Lakes occurs in upstate New York until those lakes freeze over. [65]
As Pangea rifted apart a new passive tectonic margin was born, and the forces that created the Appalachian, Ouachita, and Marathon Mountains were stilled. Weathering and erosion prevailed, and the mountains began to wear away. [10] By the end of the Mesozoic, the Appalachian Mountains had been eroded to an almost-flat plain. [10]
In winter, North Carolina is somewhat protected by the Appalachian Mountains to the west. Cold fronts from Canada are typically reduced in intensity by the mountains. However, occasionally cold air can move from the north or northeast, east of the Appalachian Mountains, from Arctic high pressure systems that settle over the Northeastern or New ...
Most of West Virginia lies within the Appalachian mixed mesophytic forests ecoregion, while the higher elevations along the eastern border and in the panhandle lie within the Appalachian-Blue Ridge forests. [1] West Virginia is situated in the Appalachian Mountains of the Upper South region of the 48 contiguous states.
The state's average annual temperature is 64 °F (18 °C). Temperatures tend to be warmer in the state's southern portion with its proximity to the Gulf of Mexico, while its northern portions, especially in the Appalachian Mountains in the northeast, tend to be slightly cooler. [2]
The mountains of Georgia have the coolest climate and most frequent snowfall in the state, although snowfall is less than any other part of the Appalachian Mountains. The exception to this is the mountain counties of Fannin, Gilmer, Pickens, Union, White and Rabun. The mountains can average between 4 and 18 inches annually.
The mountain top removal method of coal mining, in which entire mountain tops are removed, is currently threatening vast areas and ecosystems of the Appalachian Mountain region. [31] The surface coal mining that started in the 1940s has significantly impacted the central Appalachian Mountains in Kentucky , Tennessee , Virginia and West Virginia.