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NSW next in line after SA storms

AAP logoAAP 28/09/2016

NSW is set to be hit by the same storm cell which has wreaked havoc in South Australia.

The weather bureau says thousands of residents in southern and central NSW should brace for severe weather, with winds of up to 110km/h and possible flash flooding forecast for Thursday.

The ferocious mega-storm caused catastrophic damage to parts of South Australia on Wednesday and about 75,000 people are still without power after the wild weather caused a state-wide power outage.

"A vigorous low pressure system and associated cold front will move through NSW today," the Bureau of Meteorology said.

The system will move through inland regions before passing over the ranges.

The Riverina, central and south tablelands and parts of the Hunter, Snowy Mountains and Mid-North Coast regions are all expected to be hit.

Towns in flood-beleaguered central NSW are also being told to prepare for potential flash flooding.

The central west community of Forbes is expected to be inundated by a second peak of the Lachlan River at the same time the town's weekend floodwaters reach downstream Condobolin.

The SES predicts the high waters marks will occur sometime next week, with 30mm of rain expected on Thursday and up to 20mm on Friday.

At least 50,000 sandbags have been transported into the towns from Maitland in the Hunter Valley and extra crews have been brought in from around the state.

About 100 properties remain subject to an evacuation order while sittings at courthouses in Forbes, Condobolin and Lake Cargelligo have been cancelled for next week.

The SES is calling on those going to the Deni Ute Muster or travelling inland to check for potential road closures.

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