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East coast drenching to continue

Ben Domensino, Thursday June 8, 2017 - 13:30 EST

Parts of Sydney were soaked by the heaviest rain in a year during the last two days, with some suburbs picking up an entire month's worth of rain in just 36 hours.

The two day deluge was caused by a low pressure system making its way up the New South Wales coast this week.

Widespread rainfall totals of 20-50mm have been recorded east of the ranges from the Hunter down to the Victorian Border, although the heaviest falls targeted the Sydney Basin.

More than 130mm of rain was recorded at Baulkham Hills, Chatswood, West Pennant Hills and Homebush between Tuesday evening and this morning. A number of suburbs received more than 100mm of rain in just 24 hours.

Bankstown (61mm), Homebush (102mm), Richmond (69mm), Terrey Hills (74mm) and North Parramatta (96mm) all had their heaviest daily rainfall total in a year during the 24 hours to 9am today. This was also more than month's worth of rain in Richmond, which usually receives 57mm during June.

Sydney picked up 116mm in the city during the 36 hours to 9am today, which is the heaviest rain since the destructive East Coast Low last June.

Showers will continue in eastern New South Wales during the rest of this week as onshore winds feed into an upper low pressure system moving over the state's west. Some showers and storms are likely to occur west of the ranges between Friday and Sunday, although the heaviest falls will occur along the northern half of the coast.

There are indications that another low may develop over the Tasman Sea early next week as the inland upper low moves towards the coast. If this system forms, it could cause wind and rain to intensify once again, most likely in the state's northeast.

Given the rain that has already fallen, and what may occur from now until the middle of next week, there is potential for flash or river flooding in some coastal river basins.

- Weatherzone

© Weatherzone 2017

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