Across the Northern Hemisphere, familiar seasons are starting to feel unfamiliar. Heat waves linger, cold snaps arrive out of ...

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 ...

In the United States, our weather patterns usually travel from the west to the east. Sometimes, we can see variations in that a system will move in from the northwest or southwest, but Missourians ...

A huge winter storm has reignited confusion about the polar vortex, the jet stream and what climate change really means for winter weather ...

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 ...

Dartmouth researchers used machine learning and long-term climate records to construct a timeline of jet-stream variability since 1901. Nearly all prior studies of the jet stream focus on the period ...