Weather Glossary - Other

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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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Where is the monsoon?

13:09 AEDT It's been a slow start to northern Australia's wet season, but a burst of tropical rainfall - and potentially increased tropical cyclone activity - could be on the horizon.

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