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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

Frosty Morning for Eastern Australia

11:03 EST

Widespread frost and record breaking cold has impacted much of the east.

Coalcliff: Teenagers snapchat video of fire while searching burning home for survivors

15:14 EST

Three houses have burnt down after a house fire spread to two neighbouring homes, fanned by strong winds on Lawrence Hargrave Drive in Coalcliff, 25 kilometres north of Wollongong, last night.

Last significant rain for weeks in the nation's southwest

14:25 EST

The rain has tumbled down across southwestern parts of Australia during the past seven weeks, but that trend will finish today.