Five maps show how the jet stream affects forecasts. Doyle Rice Janet Loehrke. USA TODAY. Although the U.S. will see a milder pattern this week, there's probably cold, ...

You Can't See It, But It's Above You: In short, the jet stream is a narrow ribbon of strong winds about 30,000 feet above the ground that flows in a general west-to-east fashion. It helps develop ...

A jet streak is a fast-moving core of winds within the broader jet stream. In Sunday's forecast, a 90 to 100-knot (115 mph) jet streak across the Ohio Valley is expected to enhance storm formation.

The Dartmouth study found that pronounced waviness in the jet stream from the 1960s-1980s led to the warming hole, a 30-year period of abnormally cool temperatures centered on the Southeast. The ...

Due to its inconsistent nature, the 300hPa jet stream can see sudden bursts of speed which create areas of high and low pressure. The map below shows it reaching parts of the UK on Monday.

A jet streak is a fast-moving core of winds within the broader jet stream. In Sunday's forecast, a 90 to 100-knot (115 mph) jet streak across the Ohio Valley is expected to enhance storm formation.