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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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Calls for BoM to reverse decision to move resources from regions

11:58 EDT

There are calls for the Bureau of Meteorology (BoM) to shut its capital city forecasting offices and move its resources to the country.

Perth hits 40C as expected five-day heatwave begins

01:05 EDT

Perth hit a scorching 40.4 degrees Celsius on day one of a heatwave that is expected to last for at least five days.

Southeastern Australia drying out after wet start to year

15:49 EDT

After a wet start to the year, southeastern Australia is drying out, beginning its driest spell in about two months.