Heavy rain set to drive across Australia

31 Aug, 2010 03:14 AM
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A huge rainfall event is bearing down on Australia with widespread rainfall expected.

Western Australia will see the event unfold from Tuesday as tropical moisture from the Indian Ocean streams south and collides into a frontal system.

Some 24-hour totals in excess of 30mm are possible by Wednesday morning over the southern half of WA with plenty hitting the interior.

The system will wind up into Thursday as an upper trough, the engine behind strong surface systems, moves east.

As it does huge volumes of moisture will be drawn in from the moist northwestern tropics.

The result will be more heavy rain for southern parts of WA for Thursday and Friday, clearing the west coast later on Thursday.

The meandering low and trough will speed up into the weekend, driving over South Australia and into Victoria by early Saturday.

Models are predicting widespread potential for 20-40mm over SA and similar for Victoria by 10am Saturday.

Into Sunday and the rain will push through New South Wales, where more modest totals of 15-20mm are expected.

Queensland will get its share too with falls above 40mm.

The system should clear by next Monday or Tuesday leaving a very soggy start to spring in its wake.

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