The jet stream, or any wind, is the result of differences in surface temperature. In simple terms, warm air rises, creating low pressure, and cold air sinks, creating high pressure. Wind is the ...

First, instead of moving storms quickly eastward, the sluggish jet stream stalled storm systems in place, causing prolonged ...

Climate scientists have long watched the jet stream with fascination and growing concern. These rivers of air racing across our planet at altitudes of roughly 5-9 miles dictate much of our day-to-day ...

MILWAUKEE - As Hurricane Melissa roars through the Caribbean as a Category 5 storm, its winds of 160 mph and pressure near 917 millibars make it one of the most intense late-season hurricanes on ...

The jet stream is about 14 percent slower in the fall now than in the 1990s, according to a recent study by Francis. And when it slows, it moves north-south instead of east-west, bringing more unusual ...

Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...

The weather pattern may turn active again around Easter weekend across Indiana. We’re closely watching the jet stream as it stirs up the potential for thunderstorms—especially heading into Good Friday ...