Fairfax Media Network

Weather Glossary - J

Search

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.

Display Your Local Weather

Weather News

Man's body found in floodwaters in Queensland's north Burnett

14:04 EDT

A man's body has been found in floodwaters near Monto in Queensland's north Burnett this morning.

WA heatwave leading to bushfire weather

13:36 EDT

Fire danger is set to rise as Perth and many western parts of Western Australia are experiencing what could be a record breaking summer heat wave.

Heavy rain hammers QLD's Central Coast

10:02 EDT

A deep low pressure trough has brought heavy rain and storms to central parts of the Queensland coast.