WASHINGTON — In Earth's upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles per hour, but they are not the strongest in our solar system.

As meteorologists prepare the winter forecast, the jet stream emerges as a significant factor. These fast-moving air currents, found mainly in the mid- and upper-latitudes of both hemispheres ...

Much of Mississippi is expected to see temperatures in the teens this weekend and into next week, with even Gulf Coast lows ...

In these events, the polar jet stream, which rests around 5 to 9 miles ... In New York City, temperatures in the coming week are forecast to hit highs around 30 degrees and lows in the lows ...