Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still around.

This article originally published at Polar vortex sends another arctic blast barreling toward Texas. In today's edition: ...

European centre for weather forecasts predicted a polar vortex disruption; an independent weather body says the forecast is ...

Moreover, the latest data suggests that the Polar Vortex is on the verge of a significant disruption due to a new SSW event. The disruption is expected to lead to a colder pattern across the United ...

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...

Tuesday opens with a good deal of cloud coverage, but some peeks of sunshine are likely to emerge at times around midday into ...

The infamous Troll of Trondheim has been forecast to return this week, as a giant wall of snow heads straight for the UK ...

Natural gas futures jump 5% ahead of EIA storage report. Weather models show cold pattern Jan 17-22. Inventories up 1.7% ...

A spell of colder temperatures than we have experienced so far this winter is due to make itself known as we enter the New Year, reports weather forecasters ...