Jet streams are narrow bands of very fast-moving air found in the stratosphere?

Jet streams are high-altitude, fast-moving air currents that flow from west to east in the Earth's stratosphere, typically at altitudes of 30,000 to 39,000 feet. They form at the boundaries between different air masses, particularly between polar and tropical air, and play a crucial role in influencing weather patterns and systems. Jet streams can affect the movement of storm systems and are important for aviation, as they can significantly impact flight times and routes. Their strength and position can vary with the seasons and are influenced by factors such as temperature differences and the Earth's rotation.