By Caleb Boulter
Imagine a scenario where southern New England's temperature is near or above 50 degrees, while the foothills aligning the Appalachian Mountains of Maine, New Hampshire and Vermont are stuck at or slightly above 32 degrees. Despite a southerly airflow, the air never warms. Known as the damming effect, the scenario creates many problems such as icing and extremely low visibility that can last days.
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