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Jet max

(Speed Max, Jet Streak) A point or area of relative maximum wind speeds within a jetstream.

Jet streak

A local wind speed maximum within a jetstream.

Jetstream

Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds. The position and orientation of jetstreams vary from day to day. General weather patterns (hot/cold, wet/dry) are related closely to the position, strength and orientation of the jetstream (or jetstreams). A jetstream at low levels is known as a low level jet.

JTWC

Joint Typhoon Warning Center. The JTWC issues warnings and forecasts for tropical systems across the Pacific and Indian Oceans.

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SA weather: Adelaide could be 'spared worst' but destructive winds to lash parts of state

19:31 EST

Adelaide "may just get spared the worst of the weather" tonight but destructive winds are forecast to lash Kangaroo Island, Yorke Peninsula and South Australia's mid north.

SA weather: Restoring power 'very delicate affair'

18:08 EST

Parts of South Australia may be without electricity until the end of the weekend as the power network is repaired and gradually brought back online, ElectraNet has said.

Live coverage as South Australia readies for more storms following state-wide blackout

18:01 EST

More destructive weather is set to hit parts of South Australia, and authorities warn it could bring the worst winds Adelaide has ever seen.