President Donald Trump's massive tax and spending bill earmarks more than $8.6 billion to increase the U.S. Coast Guard ...

A new study challenges the idea that climate change is behind the erratic wintertime behavior of the polar jet stream, the ...

The United States must build a fleet of nuclear-powered icebreakers to counter Russia and China’s advantage in the Arctic.

Climate change has tripled the frequency of atmospheric wave events linked to extreme summer weather in the last 75 years and that may explain why long-range computer forecasts keep ...

The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

Chain reaction could unleash cold polar vortex across United States through April Don't put away those coats just yet, weather forecasters tell North Americans By Brian Lada, Accuweather.com ...

AccuWeather Long-range Expert Paul Pastelok said the shifting and stretching of the polar vortex could impact the United States around the middle of March with impacts potentially lingering into ...

The polar vortex is an area of low pressure and cold air that encircles both the Earth’s polar regions, according to the National Weather Service. The Arctic polar vortex and its proximity to North ...

Extreme weather is sweeping across the United States. Last week, the polar vortex peaked, bringing freezing temperatures to much of the country.

The polar vortex has taken on an unexpected pattern this winter — one that’s made part of the United States the most unusually cold place on the planet, at least so far this year.

The polar vortex has taken on an unexpected pattern this winter - one that’s made part of the United States the most unusually cold place on the planet, at least so far this year.