NSW braces for possible flash flooding after heavy rain lashes state

Already saturated, NSW is bracing for significant and widespread rain which could lead to flash flooding on the state’s east coast.

The Bureau of Meteorology says the heaviest falls will hit the Illawarra, Hunter, Central Coast and Greater Sydney from Saturday evening into Sunday.

WATCH THE VIDEO ABOVE: NSW braces for more wet weather.

Wollongong in the Illawarra, the eastern suburbs of Sydney and up to Newcastle in the Hunter could get up to 100mm, while other areas will get between 30mm and 50mm.

Most areas will not experience a sudden downpour, with the rainfall totals to accumulate over the next 48 hours.

“So even if it’s only taking up eight or 10mm an hour, if we did that for several hours in a row, that’s still a lot of rainfall by the time of day,” senior meteorologist Angus Hines told AAP.

After a week of heavy rain, NSW is bracing for more wet weather over the weekend. Credit: Windy.com

Hines warned the rainfall may lead to flooding, as the East Coast is already saturated after a dumping in April.

“This is significant rainfall that could lead to flooding, perhaps localised flooding, certainly blocking terrain, closed roads and traffic jams,” he said.

The deluge is far less than a month ago, when floodwater reached the top of cars in some areas of the Illawarra and Sydney.

“So we’re not expecting to see the same type of flood response, but it’s enough rain that we will probably see some areas of localised flooding and Illawarra is again in the firing line,” Hines said.

Sydney Half Marathon going ahead

The Sydney Half Marathon is set to go ahead on Sunday with organisers monitoring the conditions, and more than 19,500 runners registered.

“At this stage there are no indications that any changes will need to be made to the event,” a spokesman told AAP.

“Athletes are encouraged to prepare for a wet race and run to the conditions and the team is confident the event will take place as planned.”

The conditions are expected to ease on Monday although rain will continue to pepper the east coast through next week.

The NSW State Emergency Service is closely monitoring forecasts and preparing assets and personnel for potential issues.

SES Zone Commander Allison Flaxman warned NSW residents to prepare for the wet weather and once the heavier rain hits to avoid heading out onto the roads.

“If you do need to go out in this weather, if you do come across any flooded roadways, please don’t drive through them,” she told the Nine Network.

The weekend falls come after a wet week for NSW. Rainfall data from the bureau showed Observatory Hill had nearly 53mm from Monday to Friday and some areas had totals for the week of more than 100 mm.

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