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Unseasonable soaking for NSW and QLD

Drew Casper-Richardson, Sunday August 17, 2014 - 12:43 EST

A low pressure system and trough have brought heavy rain to New South Wales and Queensland with over 100mm falling in some places.

Falls were heaviest about the Queensland and New South Wales border region. Ballina picked up a whopping 118mm to 9am on Sunday, the highest August fall since 2006. Across the border Logan had their heaviest August fall in the 21 years of records with 91mm reaching the gauge. Parts of the Gold Coast hinterland past the century mark as well including Springbrook with 103mm. Brisbane didn't miss out and had their best rainfall since March with 52mm.

Further north, Bucca (just west of Bundaberg) recorded 120mm. Maryborough had their highest daily August total since 1893 with 91mm.

In Sydney the highest falls to 9am on Sunday were generally in the eastern suburbs where 25-30mm fell. Although Penrith's 38mm was their biggest since November. The Harbour City itself had 29mm.

Rain cleared from Queensland and northern New South Wales on Sunday morning but at times brought heavy bursts of rain. Bankstown recorded 8.6mm in just 10 minutes while Olympic Park and Terrey Hills had 5.8mm and 5.6mm respectively in the same amount of time. Olympic Park has now recorded more than 60mm with Bankstown and Terrey Hills picking up more than 50mm since the rain started tumbling down.

The widespread rain was caused by a moisture laden atmosphere interacting with a deep low pressure trough and system. These types of widespread rain events are more typical of late spring or early summer. August is normally a fairly dry month for the eastern states.

On Sunday a low pressure system embedded in the trough is expected to impact the Illawarra and South Coast. This will bring heavy rain and potentially damaging winds. The exact movements of the low will dictate where will see the worst conditions, the heaviest rain and strongest winds will be experienced just to the south of the low.

- Weatherzone

© Weatherzone 2014

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