Iran's Revolutionary Guards have declared that Iranian security forces hold the Strait of Hormuz under full control and have warned that any enemy miscalculation would result in forces being trapped ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A weakened polar vortex is allowing frigid air to spill into portions ...

There is a major weather pattern change underway across the U.S. As we get into next week, the storm track looks really interesting. Major upper-air pattern changes are quite normal. Sometimes we have ...

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of Earth, to the stratospheric polar vortex. When you purchase through links ...

A January thaw that brought widespread record warmth to the United States is coming to an end. It will be replaced by the familiar polar vortex pattern that caused below-average temperatures in the ...

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 ...

The wall that keeps cold air contained in the Arctic is called the polar vortex. There's been a "displacement" in the polar vortex, which allows Arctic air to escape to the south. An "arctic frontal ...

As December gets underway, Alabama is seeing a split in temperature trends. Part of North Alabama may slip into slightly below-normal temperatures this week. At the same time, central and southern ...

New national temperature outlooks show that while large portions of the country are headed toward below-normal temperatures in early December, Georgia is among the few regions expected to run warmer ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...