Hawkesbury bracing for 1978-level flood disaster - 9News

Hawkesbury residents are facing a tense morning, with flood levels predicted to exceed those of the 2021 disaster by midday.

Heavy rain has eased across much of Sydney but severe weather warnings remain in place as New South Wales braces for a day of dangerously high winds.

There are 61 evacuation orders still in place across the state, with the SES responding to 3000 requests for help in the past 24 hours.

Fresh severe weather warnings have been issued by the Bureau of Meteorology (BoM) overnight as more rain continues to lash New South Wales (Bureau of Meteorology)

The BoM has reissued a severe weather warning for damaging wind gusts, with peak gusts of over 90 km/h possible over the Sydney Metropolitan, northern South Coast, Illawarra and eastern Southern Tablelands districts, becoming likely about the coastal fringe.

Wind gusts of 111 km/h were recorded at Molineux Point at 9.34pm, while shortly before that, gusts of 94 km/h were recorded at Sydney Airport around 9.20pm.

The damaging wind gusts are expected to persist through the day.

A separate severe weather warning for damaging and hazardous surf is currently in place for the Hunter Coast, Sydney Coast, Illawarra Coast, Batemans Coast and Eden Coast.

The Bureau expects areas which may be affected to include: Gosford, Maitland, Sydney, Penrith, Parramatta, Wollongong, Nowra, Bowral, Batemans Bay, and Goulburn.

The BoM says heavy rainfall is no longer expected on Wednesday and has been removed from the current warnings but the coastline copped a drenching on Tuesday night, with moderate falls showing on the radar.

The Bureau are forecasting major flooding at Windsor today, which will be above the levels seen in March last year and just below the March 1978 flood event.

NSW rain radar on Tuesday night as rain continued to lash the state (Bureau of Meteorology)

"Rapid rises have been observed at Windsor where the river level has exceeded the March 2021 event and is likely to reach 14.30 metres around midday Wednesday, which is just below the March 1978 event (14.46 metres)," the BoM said in a warning issued just before midnight.

Major flooding above the levels seen last year is also taking place along the Hawkesbury River at North Richmond, Windsor, Sackville, Lower Portland and Wisemans Ferry.

"Forecast rainfall for Wednesday morning may cause further rises in the Hawkesbury Nepean Valley," they noted.

Communities in the region are already facing being cut off, with floodwaters isolating Mulgrave.

Major flooding is also occurring at Wallacia, with moderate flooding recorded at Menangle Bridge and Camden.

There's also been a moderate flood warning update for the St George's Basin are with Island Point Rd approaching a peak and the Sussex Inlet may peak at the moderate flood level, with evacuation orders in place for residents in both areas.

The SES issued an evacuation order around 1.45am for residents in low-lying areas of Scone, which joins a raft of other areas ordered to leave their homes in the last 12 hours.

Earlier in the day, residents in Sydney's Northern Beaches were put on alert for possible evacuations after a massive downpour across the region.

Around 102mm of rain had fallen in the three hours to 2.30pm at Mona Vale Golf Club, while in nearby Forestville, 124mm of rain was recorded in the six hours to 11am.

A car is trying to get through floodwaters, which have almost reached the top of its tiers in Manly Vale. (9News)

And Mosman copped 51mm of rain in the one hour to 1.45pm.

The deluge sparked evacuation warnings as Manly Dam threatened to spill and floodwaters began quickly rising in Freshwater, Brookvale, Curl Curl and the surrounding suburbs.

Vehicles were partially submerged and some roads in the area were cut off, while cars began floating on the Roseville Bridge.

The Northern Beaches is now facing a massive clean-up task, and while roads are open to local residents and business owners, other members of the public are urged to avoid the area.

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2022-03-08 19:00:08Z
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