Feb 27, 2012; 8:27 PM ET
Torrential rain will threaten to cause flooding this week in a swath over middle and southeastern Australia.
Key agricultural lands and some urban areas will be at risk of inundation, as will wide tracts of open desert.
Between Tuesday and Sunday, widespread rainfall will reach 150 to 250 mm, or about 6 to 10 inches.
The corridor having outbursts of heavy rain will stretch between Sydney and Melbourne in the southeastern states of Victoria and New South Wales. Canberra, the national capital, could get some of the heaviest rain.
The rainy corridor will also reach west to near Adelaide, South Australia.
Abundant tropical moisture flowing southward through the desert hinterland of Australia will help to set up the thundery cloudbursts as it interacts with a cold front shifting slowly northward from the Southern Ocean.
Earlier in the Southern summer, flooding farther north in eastern Australia inundated swathes of northern New South Wales and southern Queensland, flooding homes, businesses and crops.
As of this week, major flooding from the mid-summer cloudbursts was still making its way down the Darling River in a slow-motion tsunami that has been forecast to last into May.
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