The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March.

On March 9, the polar vortex wobbled and then snapped back the other way as mighty winds, suddenly shifting from the west to the east - something that typically happens once a year - usually in the ...

Today will be the brunt of the cold temperatures across the region, with highs barely hitting 40° and wind chills below freezing. Overnight will reach down into the 20s before we finally see some ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

Overnight low temperatures in the upper 50s are normal for February, not April, but we may see them this weekend in South ...

Cold weather is expected to blanket New York through mid-April, bringing the chance of freezing temperatures, snowfall, as ...

AccuWeather long-range experts predicted the transition from winter to spring as the period most likely to experience the polar vortex allowing colder air into the United States. A prolonged ...

Where weather could clash with the 'Blood Moon' next week Chain reaction could unleash cold polar vortex across United States through April The storm is forecast to strengthen enough to create ...

The new year ushered in an Arctic blast that has only recently let up. This extreme plunge in temperature is referred to as a polar vortex. While it may seem this is a new term, it has been in use ...

The Polar Vortex's collapse will cause a major Arctic blast from central Canada into the Northeast United States, even if a progressive and dynamic weather pattern will persist across North ...