Local wind speed maximum within a jet stream.

a small-scale but intense core of strong winds, usually within (and moving quickly along) a well-defined jet stream (See main FAQ Q/A 2A.1). They generally do not have a length much more than two to three-hundred kilometres, and can be associated with explosive cyclogenesis events (q.v.). Difficult to pick up via conventional observations (e.g. radiosonde wind-finding), but can be detected in WV imagery. (See also Q/A 2A.8)

Same as Jet Max; a point or area ("streak") of relative maximum wind speeds within a jet stream.

A concentrated region within the jet stream where the wind speeds are the strongest. It sets up unique wind currents in its vicinity which either enhance or diminish the likelihood of clouds and precipitation. It will propagate downstream along the jet stream axis.

An isotach (wind) maximum, often observed along the jet stream.

Same as jet stream core.

A region of accelerated wind speed along the axis of a jet stream.