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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

Spring starting damp in WA

18:11 EST

The Southwest Land Division is starting spring as winter ended, wet, helping grain crops recover after a drier-than-normal winter The Southwest Land Division dried out during August then picked up reasonable rain at the end of the month and is about to get spring off to a wet start, giving grain farmers some hope.

Rains fall across Mallee over weekend but farmers want more

16:36 EST

Broadacre crop growers in the Mallee region of South Australia and Victoria could be able to minimise losses from severe frost if they get more decent rain.

South Australia warned of another severe bushfire season

15:08 EST

The latest bushfire outlook has warned of a heightened risk of fires across South Australia this summer.