Polar Vortex to Plunge South, East States into Frigid Temperatures: See Maps

The United States is bracing for a significant drop in temperatures as a polar vortex descends from Canada. This weather phenomenon is expected to affect the Midwest, Mid-Atlantic, and Southern states, leading to below-freezing conditions.

Impact of the Polar Vortex

The polar vortex is a large-scale weather pattern that typically confines the coldest Arctic air to the polar regions. During the winter months, parts of this vortex can shift southward, resulting in frigid temperatures for much of the continental U.S.

Forecast and Weather Conditions

Weather forecasts indicate that a major winter storm will bring snow, sleet, and ice across various regions. States from Texas and Oklahoma to North Carolina may particularly witness hazardous conditions.

• Philadelphia’s daytime highs will drop to the low 20s.
• Wind chill factors could make temperatures feel even colder, plunging into the teens.

Scientific Insights

A recent study in the journal Environmental Research: Climate suggests that outbreaks of Arctic air will persist despite warming trends in the Arctic. This indicates that similar weather events could become more common in future decades.

The Mechanism Behind the Vortex’s Shift

According to the National Oceanic and Atmospheric Administration (NOAA), recent patterns show that the polar vortex has moved south of the tropospheric jet stream. This shift has previously allowed warmer Pacific air to enter parts of North America.

As temperatures fall, the risk of frostbite escalates. The National Weather Service employs a wind chill factor to assess the dangers associated with severe cold.

Understanding Wind Chill

The wind chill index measures the impacts of wind speed and temperature on the human body. It helps determine how quickly frostbite can occur under specific conditions. To understand your risk:

With these frigid temperatures and predicted winter storm, residents should prepare for potentially hazardous conditions. Stay informed and take precautions against the bitter cold.