A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

It’s the "Bleak Midwinter" in the Northern Hemisphere – so, in case you’ve been living under a well-insulated rock, cold ...

The daily weather we experience is largely shaped by atmospheric conditions nearly 30,000 feet above us, where a key factor is the weather phenomenon known as the jet stream. Think of a jet stream as ...

The FOX Forecast Center ... with cold air masses from the north. Since the boundary between cold and warm air masses is more pronounced during winter, the jet stream is more robust.

The cons outweigh the pros for an abnormally strong jet stream heading to the Pacific ... 12,000 kilometres from the Philippines to North America. SEE ALSO: Blast of snow will bring a swath ...