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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Summarising rain in Darwin so far this month

13:14 AEDT La Nina has already made its presence felt in Darwin, with this month already being the wettest October since 2010 - coincident with the last strong La Nina event.

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