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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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Weather News

Patchy clouds with a chance of excitement for Game III

12:46 EST

Origin Game III, the decider, is on tonight at Suncorp Stadium in Brisbane.

Agriculture Minister Joyce defends White Paper's drought loans, R&D spend and lack of inland rail plan

11:06 EST

Agriculture Minister Barnaby Joyce says he is sympathetic to the concerns of drought-affected farmers about concessional loans, but has made no commitment to change the controversial schemes any time soon.

Canberra's run of cold still running

20:01 EST

Canberra has chilled below freezing every morning this month, and a few days have been quite cold as well.