The frigid January temperatures resulted in the coldest start to the year in over a decade. A preliminary look at temperature ...

The polar vortex of ultra-cold air usually spins around ... a weather service meteorologist based in Gray, Maine. The cold was expected to grip the Eastern Seaboard as far south as Georgia ...

When there are disturbances in which the Jet Stream weakens, it can become wobbly. This allows the cold air to plunge southwards. A disrupted polar vortex does not happen every year. Very much so what ...

BOSTON — Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures as tens of millions of residents along the East Coast contend with a ...

Tens of millions of residents along the East Coast are bracing for several inches of snow Sunday followed by dangerously cold temperatures that will grip much of the country from the Northern Plains ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

For the third time in U.S. history, Martin Luther King Jr. Day and Inauguration Day will both be held on the same day.