Arctic Air Plunges East
Nearly 200 million people across the eastern United States will experience temperatures 5 to 15 degrees Fahrenheit below average as a sweeping cold front moves south from Canada.
CNN reported that the incoming weather system will deliver the coldest air in six months to dozens of millions of residents.
A developing storm over the Midwest on November 11 is driving the chill behind the continental shift. Forecasters note that the drop will push conditions well below spring norms for regions east of the Mississippi River.
Snow falls in mountains while rain hits lower elevations
Wet snow is expected in the interior mountains of the Northeast and across the central and southern Appalachians. CNN reported that the most probable window for snowfall accumulation falls during the night of November 12 into November 13.
Lower elevations, including the Interstate 95 corridor spanning from Philadelphia to Boston, will see cold rain instead of accumulating snow. Higher elevations in northern New England and upstate New York could receive anywhere from a fine dusting to several inches of snow.
Storm Track and Timing Variables
Forecast models disagree on the precise speed and intensity of the developing system. CNN reported that a faster-moving storm would leave less snow on the ground and taper off by the morning of November 14.
Conversely, a slower coastal track could prolong snowfall through November 14 and produce higher overall totals.
Deep South Freezes
Sub-freezing temperatures will reach portions of the Deep South during the night of November 13 to November 14. Central Florida, including Orlando, could drop into the 40s for the first time since March.
Above-average temperatures are projected to return to a large portion of the eastern United States during the following week.
When will cold temperatures and snow arrive?
When will the coldest temperatures arrive?
The unseasonably cold air is driven by a storm forming on November 11, bringing the lowest temperatures in six months to the eastern United States.