It’s the "Bleak Midwinter" in the Northern Hemisphere – so, in case you’ve been living under a well-insulated rock, cold weather and snowfalls are hardly unexpected in many parts of the world.

An example of the jet stream setup There are two main types of jet streams that influence weather: The polar jet stream and the subtropical jet stream. Types of jet streams that influence our ...

"Weather can happen regardless of what the stratosphere is doing," Simpson said. The high-speed polar jet stream typically spins at a height of 5 to 9 miles above the Earth’s surface, in the ...

This wobbly or weak pattern in the jet stream means that more arctic air and stormy weather are in the forecast. However, the polar vortex is hard to predict past two weeks. There is no need for ...

“Some of our coldest weather has been when the jet stream gets buckled really far south,” Ballard said. When the polar jet stream reaches as far south as Kansas or Nebraska, it can bring ...

you can thank — or blame — the polar vortex and its interaction with the jet stream. This dynamic duo plays a huge role in shaping winter weather patterns and determining whether we’ll be ...

two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere. As the Arctic continues ...

Most notably in winter months, the circling vortex of cold air can break down, causing the polar jet stream to become "wavy", stirring up extra-chilly weather at lower latitudes, including North ...

Miles above the Earth, two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere. As the Arctic ...