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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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Melbourne storms trap more than 40 motorists on flooded roads

11:43 EDT

Forty-one motorists had to be rescued after becoming trapped on flooded roads in Melbourne overnight.

SA storms: Thousands still without power as businesses suffer losses in blackout

22:55 EDT

Thousands of South Australian properties remain without power after a day of wild storms, as businesses count the costs of blackouts and lost trade.

Melbourne hit by heavy storms causing flash flooding, transport delays, emergency callouts

22:46 EDT

Victoria's State Emergency Service has responded to more than 1,200 calls for help after wild weather caused havoc across the state.