In addition to warnings about cold weather and winds, the National Weather Service in State College placed Lancaster County under a Code Orange air quality alert through Friday evening. During a Code ...

South Florida is bracing for the coldest air since January 2010, with temperatures expected to drop into the 30s. West Palm Beach is forecast to fall to 34 degrees, just two degrees shy of a record ...

Add Yahoo as a preferred source to see more of our stories on Google. Arctic air is expanding across the central and eastern United States and will bring the coldest conditions of the winter in many ...

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Bundle up! Coldest air in a decade as a weakening polar vortex brings plummeting temperatures to Ontario. The polar vortex, containing some of the globe's coldest air, is descending into Ontario.

This story has been edited to correct an error. Judah Cohen is affiliated with the Massachusetts Institute of Technology. Our old wintertime friend the polar vortex ...

Forecasters say that the polar vortex will usher in waves of frigid air across parts of the U.S. through January. The "more active polar vortex will drive colder air and snow across the central and ...

The problem usually starts the same way. Your 6.7 Cummins feels strong, but not as responsive as it should. Throttle response feels muted, intake temps climb after a few pulls, and you know the stock ...

Baby, it's colder than normal outside! December is off to a chillier-than-typical start for much of the country. More frosty temperatures hit parts of the north-central U.S. on Thursday, Dec. 4, and ...

Indiana is bracing for a surge of Arctic air, bringing some of the coldest temperatures in the U.S. A weakened polar vortex is allowing frigid air to spill into the country, creating a winter-like ...

A blast of the season's first frigid air was bearing down on much of the U.S. on Monday, bringing the prospect of snow to parts of the country, and plunging temperatures in Florida — though it is ...

Air Force quarterback Liam Szarka, center, runs in for the touchdown as he is tackled by Utah State cornerback Noah Flores, left, during Saturday’s game in Logan, Utah. Air Force’s quarterback ...