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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

A stormy outlook for Darwin

13:23 EDT

Darwin is on track to reach their December average rainfall, which is already sitting at the halfway mark.

Unsettled spell for Perth

12:23 EDT

The England cricket team may feel more at home, as conditions turn wet and very windy for the end of the third test.

'Simple' calculations predicted floodwaters in 2011, residents near Wivenhoe Dam say

09:20 EDT

Two days before floodwaters threatened the Ipswich region, west of Brisbane, in January 2011, Darren and Brad Zanow knew they had to move their belongings to higher ground.