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540 line

Indicates the 540 decametre line on the 1000-500 thickness chart. Often used as a rough guide to determine when an airmass is cold enough to produce snowfalls on the Australian southern alpine areas.

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Weather News

Sunday starts out squally in the southwest

16:05 EST

A large and vicious cold front has swept through southwestern parts of Western Australia, bringing severe weather.

Tasman Low chances increasing

13:15 EST

After a few days of computer forecast model uncertainty, there is now growing consensus that a deep low pressure system will form off the New South Wales coast in the coming days.

NSW's Riverina sees a wet and warm month

15:00 EST

For the Riverina area, July turned out to be consistently wet and warm.