In which direction do jet streams typically flow?

Jet streams are high-altitude, fast-moving air currents that typically flow from west to east. This eastward direction is largely influenced by the rotation of the Earth and the temperature differences between the equator and the poles. As the sun heats the Earth unevenly, warmer air rises around the equator, while cooler air sinks near the poles, creating a pressure gradient that drives the flow of air.

The Coriolis effect, resulting from the Earth's rotation, also plays a significant role in the directionality of these winds, amplifying the tendency for jet streams to move from west to east. Understanding this natural phenomenon is crucial for accurate weather forecasting and flight planning, as jet streams can significantly affect flight times and weather patterns.