Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Forecasters are warning that the breakdown of the polar vortex high above the Arctic will not bring relief from winter, but ...

Climate deniers are quick to say ‘I told you so’ when the mercury drops. But a warmer planet impacts weather in ways that can seem counterintuitive. Record cold temperatures are once again expected to ...

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