Sharjah24 – Reuters: Heavy rains drenched Australia's east coast for the second time this month triggering evacuation orders for thousands of flood-weary residents as authorities warned the intense weather system will likely persist for the next 24 hours.

Several towns across northern New South Wales and southeast Queensland states were still battling to clear tonnes of debris after devastating floods early this month killed at least 21 people and swept away hundreds of farms, houses and livestock.

Amid the rebuilding efforts, the Bureau of Meteorology on Tuesday warned of potentially life-threatening flash floods along the northern New South Wales coast stretching across a distance of more than 500 kms (311 miles). There could be isolated rainfall of up to 300 mm (12 inches) in some regions over six hours, the weather bureau said.

The new low-pressure system could be less severe than the previous one but the already-sodden earth from weeks of relentless rains could result in a sudden rise in river levels.

Australia's east coast summer has been dominated by the La Nina weather pattern, typically associated with increased rainfall, for the second straight year with many rivers already near capacity before the latest drenching.

In the northern New South Wales town of Lismore, among the worst hit by record floods a month ago, residents in low-lying areas were ordered to evacuate late on Monday night.