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

Stormy night in the Top End

10:20 EDT

Severe thunderstorms tracked over the Northern Territory's western Top End early on Thursday morning, putting on a spectacular light show and causing the heaviest rain in ten months for some areas.

Climate change already affecting hurricanes and tropical cyclones, research shows

06:04 EDT

You've probably heard people blame the devastating impacts of cyclones, hurricanes, or typhoons on climate change.

Drought from the inside looking out: How farmers' amateur photography adds new perception

17:05 EDT

When your our own backyard is a massive drought-stricken landscape, telling your own story through photography can be great therapy.