What are the average winds for a jet stream, according to meteorological standards?

The average winds for a jet stream, based on meteorological standards, typically range from 100 to 150 knots. The jet stream is a fast-flowing air current high in the atmosphere, usually found at altitudes of 20,000 to 50,000 feet in the mid-latitudes. This high-speed flow is largely influenced by factors such as temperature differences between air masses and the Earth's rotation. The strong pressure gradients in these regions can lead to the higher wind speeds characteristic of jet streams, which are vital in influencing weather patterns and the development of storms.

Given this context, the choice indicating winds of 100 to 150 knots accurately reflects the typical range one would expect for jet streams in meteorological observations.