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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Could early February's blast of cold in the northeastern United States be one of the last appearances of our wintertime foe, the ...

A warming Arctic can stretch the polar vortex, a high-altitude air ribbon, one says. The “wobble” can disrupt the jet stream, causing extreme cold in the East. By Eric Niiler If the planet is getting ...

Dangerously cold temperatures combined with wind gusts up to 60 mph were expected to cause life-threatening conditions across parts of the Midwest, mid-Atlantic and Northeast to close out the week, ...

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 ...

A displaced polar vortex is expected to bring dangerously cold temperatures to much of the U.S. The arctic blast is driven by a weakened polar vortex, which allows frigid air to move south from the ...

A mass of Arctic air from Canada is bringing brutally cold temperatures to the northeastern United States. Vermont is under Extreme Cold Warnings, with wind chills expected to reach 20 to 40 below ...

View post: Winter Storm Warnings for 26 Inches of Snow in 8 States Emerge A cold front will bring plunging temperatures and snow to the Northeast this week. Polar vortex disruptions, caused by Sudden ...

While much of the Northeast will be wrapped in another round of frigid cold, Oklahoma will experience some unseasonably warm temperatures when another polar vortex strikes the U.S. next week.

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 ...