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Weather Glossary - J


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.


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.


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

How drought pushed well-known Queensland cattle breeder to move to King Island for rainfall

07:03 EDT

A well known Queensland stud cattle breeder says years of drought and the changing climate is why his family sold its Queensland property and relocated half their herd to King Island.

Reduced market options for wheaten hay: exporter

16:14 EDT

Farmers across of Australia have been forced to cut areas of their cereal crops for wheaten hay, despite the product's lack of appeal on international markets.

Healthy rain along the QLD coast

15:23 EDT

Parts of coastal QLD received their heaviest October rain in five years.