Where are jet streams usually located in the atmosphere?

Jet streams are typically located just below the tropopause, which is the boundary between the troposphere and the stratosphere. At this altitude, jet streams are found within the upper levels of the atmosphere, where they play a crucial role in influencing weather patterns. The jet streams occur primarily due to the temperature gradients between the warmer air in the tropics and the cooler air in polar regions. As a result, they are strongest near the tropopause, where these temperature differences are most pronounced.

Understanding the position of jet streams is important for pilots and meteorologists, as they can significantly affect flight paths, weather conditions, and turbulence. Their existence just below the tropopause allows them to have a major impact on high-altitude weather systems and movement of air masses.