Definitions for "Jet Streak"
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.