Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

The first thing most people will notice about the Vortex AMG 1-10×24 is its eye-popping price. It lists for a stunning $6,399, with a street price of $4,000. Now it’s one thing for military units to ...

Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...

High-Altitude-Long-Endurance (HALE) Unmanned Aerial Vehicles (UAV) operating at low Reynolds numbers face significant challenges from atmospheric gusts, which can intensify flow separation and induce ...

It is now likely that the coldest period of sustained cold weather is behind us after gripping the Eastern U.S. for the first part of December. Warmer temperatures are expected for Christmas and into ...

The coldest air of the early winter season is blasting the eastern U.S. on Monday with single-digit temperatures with the wind chill, as the Polar Vortex unravels and, with it, brings dangerous arctic ...

Add Yahoo as a preferred source to see more of our stories on Google. A map of the polar vortex that is bringing frigid temperatures to parts of the U.S. (AccuWeather) The first of three rounds of ...

Just a few days into December, an arctic air mass has swept into the United States, bringing subzero morning lows and daytime highs stuck in the teens for 30 million Americans in the Northern Plains, ...

A shifting polar vortex is expected to bring three waves of Arctic air to the central and eastern U.S. Tennessee is forecast to experience winter weather, including a mix of snow and ice, in early ...