A series of clipper systems will move across the Northern Tier of the country during the next week, which will bring both snow and reinforce those cold temperatures. The systems will be fast moving, but with three clippers set to impact the region in less than a week, we will see impacts from snow and cold temperatures. Time out the chilly, snowy forecast here.

The relentless early-season cold isn't letting up, as another shot of frigid temperatures is plunging into the country. Here's when it will arrive, who it will affect and how cold it will get.

The Surface Water Ocean Topography satellite captured high resolution measurements of this summer’s Pacific tsunami. The satellite imagery is the first of its kind, bringing new detail and insight to how these massive waves form.

Population density, differences in temperatures and the tracks of winter storms can bring major uncertainties into the forecast.

As a rapid snowstorm blasted West Virginia Tuesday morning, a tractor-trailer driver lost control on a snow-covered bridge on U.S. 35 in Mason County. Heart-stopping video shows the cab of the truck dangling from the bridge with the trucker still inside. Watch this video to learn what stopped his truck from plunging to the ground below and witness his incredible rescue.