A sharp, late-season flip in the jet stream is setting up a winter pattern that looks very different from the one that opened the year, and forecasters say it is not business as usual. A leading ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

AccuWeather lead long-range meteorologist Paul Pastelok said in an online forecast, The deepest into the winter is mostly to ...

This winter has been an active one with parading storms and deep cold snaps. I feel like every time I wrap up one storm ...

While much of the eastern U.s. has been frozen by rounds of Arctic air and snow, the West has experienced weeks of unseasonable warmth, which has left many mountain ranges in a snow drought. A major ...

There's a confounding dilemma for many folks trying to make sense of winter weather in the context of climate change.

The US is a nation divided, with frigid conditions, snow and ice entrenched east of the Rockies all the way into Florida, and ...

A warming Arctic can stretch the polar vortex, a high-altitude air ribbon, one says. The “wobble” can disrupt the jet stream, ...