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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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BOM predicts a less destructive South Australian coastal storm season this year

18:26 EST

As the mercury plummets across South Australia ahead of winter, coastal properties are preparing for the inevitable storm surges.

Arid April in Perth

15:37 EST

Perth has not recorded any rainfall so far this month.

Flood assistance 'slow' as coordination issues dog federal-state response to WA disasters

14:08 EST

A Western Australian Government official says "our eyes widened" when the new administration faced federal-state cooperative issues tackling the state's storm recovery after months of damaging weather.