1 Any high-altitude, strong wind current which can aid or hinder jet flight depending on its direction 2 The trail of condensation left by a jet flying at high altitude
A high-speed, meandering wind current, generally moving from a westerly direction at speeds often exceeding 400 kilometers (250 miles) per hour at altitudes of 15 to 25 kilometers (10 to 15 miles) In the Western United States, the jet stream's north-south latitudinal position largely determines the application and intensity of precipitation during the winter months when most rain and snowfall occur
A narrow band of westerly high velocity wind, in excess of 95 mph (150 kph), that encircles the earth in the upper troposphere It can reduce the flying time across the Atlantic Ocean from west to east and retard flights in the opposite direction
a high-speed high-altitude airstream blowing from west to east near the top of the troposphere; has important effects of the formation of weather fronts
a fast moving river of air [traveling at 190 mph (300 kmph)] in the upper part of the lower atmosphere which often marks the boundary between different air masses There are two jet streams: the polar jet stream and the weaker sub-tropical jet stream
The jet stream is a very strong wind that blows high in the earth's atmosphere and has an important influence on the weather. a current of very strong winds high above the Earth's surface. Any of several long, narrow, high-speed air currents that flow eastward in a generally horizontal zone in the stratosphere or upper troposphere. Jet streams are characterized by wind motions that generate strong vertical shearing action, considered largely responsible for the clear-air turbulence experienced by aircraft. They also have an effect on weather patterns. Jet streams circle the Earth in meandering paths, shifting position as well as speed with the seasons. In the winter they are nearer the Equator and their speeds are higher than in the summer. There are often two, sometimes three, jet-stream systems in each hemisphere
a long narrow meandering current of high-speed winds near the tropopause blowing from a generally westerly direction and often exceeding a speed of 250 miles per hour
A high-speed wind near the troposphere, generally moving from a westerly direction at speeds in the northern hemisphere and in an easterly direction in the southern hemisphere, often exceeding 400 km per hour (250 miles per hour)
High speed air currents that flow eastward in the upper troposhere and lower stratosphere Jet streams can generate strong vertical shearing action that is hazardous to aircraft (Sort of opposite to jet streams are the trade winds Trade winds blow westward toward the equator from the subtropical high-pressure belts at latitudes near 30 °N and 30 °S )
Strong winds concentrated within a narrow band in the atmosphere The jet stream often "steers" surface features such as fronts and low pressure systems
high speed air flow in the atmosphere forming air rivers several hundred miles across that generally move west to east and mark the boundary that separates two global air masses with significant differences in temperature
Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds The position and orientation of jet streams vary from day to day General weather patterns (hot/cold, wet/dry) are related closely to the position, strength and orientation of the jet stream (or jet streams) A jet stream at low levels is known as a low-level jet
A long, narrow, meandering current of high-speed winds in the upper troposphere blowing from a generally western direction and often exceeding 250 mph; sometimes contains a jet core
A strong band of wind or winds in the upper troposphere or in the stratosphere, moving in a general direction from west to east and often reaching velocities of hundreds of miles an hour See jetstream, note
Relatively strong winds that are concentrated in a narrow band in the atmosphere Jet Streams are usually thousands of kilometers long, hundreds of kilometers wide but only a few kilometers thick They are usually found between 6 and 10 miles above the surface