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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

Queensland man opens his own Aussie Helpers depot to help Australia's farmers

09:02 EST

From severe weather in the south to drought in the north, there are plenty of farming families in need of support.

SA weather: Langhorne Creek vineyards welcome winter flooding

06:31 EST

While a wet and stormy winter has many South Australians counting the days until summer, flooding at Langhorne Creek south of Adelaide has grape growers smiling.

Lake Pedder overflows after record wet July quarter

18:30 EST

Lake Pedder in Tasmania's south-west has reached capacity for the first time in 28 years.