Upper level air flowing at up to 150 mph in a westerly direction in the Northern hemisphere.
Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds.
the stream of exhaust from any reaction engine
A stream of air, about 12 km (8 miles) high, with an average speed of 100 km/hr (67 mph) at 30 to 50 degrees north latitude. Jet stream winds are from a general westerly direction, and since mid latitude storm systems follow the jet stream, it is also known as the "storm track".
Narrow stream of strong winds oriented in the upper portions of the atmosphere which shifts each day. The Jet Stream determines the general day-to-day weather pattern by driving different masses.
a band of high winds usually found in the upper troposphere: wind speeds can exceed 90 m/s. Jet streams are also located in the stratosphere and, with lower speeds, in association with the atmospheric boundary layer. [see also the main FAQ Q/A 2A.1
A tube-like flow of air moving horizontally at very high speed at about 12 kilometres above the earth's surface.
strong wind currents at high altitudes in the earth's atmosphere. They are thousands of miles long and hundreds of miles wide, and they move weather patterns around the earth.
A high-speed air current in the upper atmosphere.
strong winds concentrated within a narrow current in the troposphere
A narrow band of atmospheric winds with speeds in excess of 57 mph.
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 high velocity corridor of air moving through the winds aloft
a narrow band of high speed winds that reaches its greatest speed near the tropopause
a shallow, twisting river of maximum winds, near the tropopause
a strong wind concentrated in a relatively narrow and shallow stream in the atmosphere that affects weather patterns
a thin layer of air that blows winds,blowing near 250 miles an hour, high in the troposphere. These ribbons of air blow from the west towards the east.
rivers of fast-moving air that circle the globe. They mark the boundaries between air masses and are normally about 10 km above the earth's surface.
A narrow band of upper atmosphere wind that has speeds greater than 57 miles per hour, caused by air temperature differences
High-speed bands of wind in the atmosphere. The jet stream often "steers" surface features such as fronts and low pressure systems.
Strong winds concentrated within a narrow zone in the atmosphere. Often used in reference to the axis of maximum mid-latitude westerlies located in the high troposphere.
The high altitude river of rapidly moving air that steers storms across the earth.
the world's fastest upper-air winds. Jet streams travel in a west-to-east direction, at speeds of 80 to 190 miles (130 to 300 kilometers) per hour, around 30,000 feet (9,150 meters) above the ground. Jet streams occur where the largest differences in air temperature and air pressure exist. In North America, jet streams are typically found over southern Canada and the northern United States, as well as over the southern United States and Mexico. The northern jet stream is called the polar jet stream, and the southern jet stream is called the subtropical jet stream.
Swift winds in the upper troposphere that move around in relatively narrow belts.
a zone of strong winds concentrated in a narrow band in the upper atmosphere; these winds are often referred to as the storm track since the jet stream often "steers" atmospheric storms.
High-speed winds usually found at high altitudes, just below the tropopause, between 25,000 and 45,000 ft. The term jet stream was coined by the first pilots who encountered this strong wind, to whom it seemed as though the air was being blown out of a gigantic nozzle, or jet.
A band of strong winds located between eight and twelve miles up in the atmosphere. The jet stream is responsible for steering areas of low pressure (storms) and high pressure (fair weather makers).
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.
A narrow band of wind in the upper atmosphere with speeds greater than 57 mph.
Fast high level winds contained in a narrow band. Separates polar air from subtropical air.
A narrow band of strong winds in the atmosphere that controls the movement of high and low pressure systems and associated fronts. Jet Streams meander from time to time. Wind speeds can reach 200 mph or higher in certain cases. It is usually found at 30,000 to 40,000 feet above the earth's surface. It owes its existence to the large temperature contrast between the polar and equatorial regions. 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.
The narrow ribbons of fast-moving wind in the upper atmosphere that guide weather systems.
Strong winds concentrated within a narrow band in the atmosphere. The jet stream often "steers" surface features such as fronts and low pressure systems.
A "river" of strong winds that flows over North America from west to east
a high speed, narrow band of upper level winds that flows from west to east around the globe
Relatively strong winds concentrated within a narrow current in the atmosphere.
Strong winds at about 35,000 feet aloft that divide air masses of different temperatures, and often act as steering currents for weather systems
A global upper tropospheric wind belt that separates mid-latitude air from polar air.
A narrow band of winds blowing high in the troposphere at speeds in excess of 57 miles per hour or greater.
A very strong, generally westerly-based winds located in a narrow and shallow stream in the upper regions of the troposphere.
The term applied to a more-or-less spatially continuous maxima of wind speed located in the upper troposphere, usually at the tropopause.
High-speed airflow in narrow bands within the upper-air westerlies and along certain other zones at high levels. Show Picture
An undulating band of strong high-altitude winds which may occasionally exceed 400 km/h. In Canada, the jet stream travels mostly from west to east and may extend over hundreds of kiiometers. It has an altitude of about 9,000 meters. Pilots flying at high altitudes often search out the jet stream to speed along eastbound flights.
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.
Flat tubular, quasi-horizontal, current of air generally near the tropopause, whose axis is along a line of maximum speed and which is characterized by great speeds and strong vertical and horizontal wind shears.
A quasi-horizontal stream of wind concentrated within a narrow band; generally located just below the tropopause.
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 meandering and relatively narrow belt of strong winds (speeds of 50 knots or more) embedded in the normal wind flow aloft, generally found at high altitudes.
is a weather term which refers to a changing, narrow, high-velocity core of air movement located in the lower stratosphere, and related to the position of the polar front and mid-latitude cyclones
An upper-level stream of fast moving air, the result of a strong meridional pressure gradient. The polar jet stream separates cold polar air from warm tropical air.
The jet stream is a narrow, powerful wind that flows high the atmosphere (in the upper troposphere).
A strong narrow current concentrated along a quasi horizontal axis in the upper troposphere or in the stratosphere, characterized by strong vertical and lateral wind shears and featuring one or more velocity maxima ( jet streaks). The speed of the wind must be greater than 60 knots (31 m/s).
An area of strong winds that are concentrated in a relatively narrow band in the upper troposphere of the middle latitudes and subtropical regions of the Northern and Southern Hemispheres. Flowing in a semi-continuous band around the globe from west to east, it is caused by the changes in air temperature where the cold polar air moving towards the equator meets the warmer equatorial air moving polarward. It is marked by a concentration of isotherms and strong vertical shear.
A well-defined core of strong wind, ranging from 200-300 miles (320-480 km) wide with wind speeds up to 200 mph (320 kph), that occurs in the vicinity of the tropopause. See Reiter (1963).
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.
The jet stream is a high-speed wind that is usually found at high altitudes, between 25,000 and 45,000 feet (just below the tropopause). It is called the jet stream because the first people who encountered the jet stream were pilots who described it as though the wind was being propelled from a jet engine.
Jet streams are fast flowing, relatively narrow air currents found in the atmosphere at around 11 kilometres (36,000 ft) above the surface of the Earth, just under the tropopause. They form at the boundaries of adjacent air masses with significant differences in temperature, such as of the polar region and the warmer air to the south.