Don't put away that winter jacket just yet. The polar vortex is expected to be impacted by a sudden warmup of the stratosphere, which will bring freezing temperatures to the Northeast this weekend and ...

Add Yahoo as a preferred source to see more of our stories on Google. Dangerously cold temperatures are expected across a large portion of the U.S. this week, impacting the Midwest, Mid‑Atlantic and ...

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NEW YORK – Amid a winter of relentless Arctic conditions, the most powerful polar punch of the season is expected this week across the Northeast, with dangerous wind chill temperatures approaching 25 ...

Could early February's blast of cold in the northeastern United States be one of the last appearances of our wintertime foe, the polar vortex? While forecasters can't yet say that for sure, a warmer ...

Special Olympics Pennsylvania announced Monday its annual Lehigh Valley Polar Plunge will take place at a new venue this year after organizers determined the Delaware River was too frozen for safe ...

So far this winter, the East has endured frigid temperatures and record snowfall, and if you're tired of the constant chill, some relief may be in sight. While much of the West hasn't seen winter ...

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 ...

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A weakened polar vortex is allowing frigid air to spill into portions of the U.S. this week, forecasters say. The National Weather Service Weather Prediction Center (WPC) warned in a Thursday update ...

Though many things seem more uncertain than ever, some things never change. James Cameron is still making Avatar movies. The State Street Chipotle is still out of ingredients. And, “Michigan Math” is ...