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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

Ex-Tropical Cyclone Alfred makes landfall, weakens to tropical low

06:58 EDT

Tropical Cyclone Alfred has weakened to a tropical low as it begins to make landfall on the Gulf of Carpentaria's southern coast.

Cyclone Alfred forms in Gulf of Carpentaria prompting evacuations at Borroloola

06:34 EDT

Some homes in the community of Borroloola on the Gulf of Carpentaria were evacuated with 74 residents sheltering elsewhere, as they waited for Cyclone Alfred to make landfall about sunrise on Tuesday.

Kimberley wet season causing havoc but creating tourism opportunities

21:33 EDT

WA's Kimberley is in the midst of one of its biggest wet seasons on record, causing headaches for emergency services, remote communities and cattle stations cut off by flooding, but it has not been all bad news for the region.