More than 50 weather warning remain in place
Dozens of schools closed on Monday

Authorities have resumed their search for a 26-year-old woman swept away by floodwaters during a girls' weekend away in the Hunter Valley on Saturday.

Residents in low-lying parts of Raymond Terrace in the Hunter and Gunnedah in north-central NSW were ordered to evacuate on Sunday night.

'You must evacuate now because inundation is occurring and evacuation routes will be closed due to floodwaters,' one SES alert read.

A major flood warning for the Namoi River remains in place, while a moderate alert for the Peel River is expected to cause minor flooding in Tamworth, Narrabri and Wee Waa.

The Oxley Highway remains closed between Gunnedah and Carroll, along with the New England Highway at Muswellbrook.

More than 50 warnings remain in place for the NSW Mid North Coast, Upper Hunter and New England regions.

Dozens of schools were closed on Monday due to the wild weather.

It has been a busy weekend for SES as wild weather smashed large parts of NSW

A major flood warning has been issued for the Upper Hunter and north-central NSW regions

'If a school is closed, it will not be offering supervision to students,' the NSW Department of Education said in a statement.

Wild weather hammered large parts of the state over the weekend after floods and snowstorms stranded cars and cut power to homes.

Emergency workers were called north of Cessnock on Saturday night after reports a car was stranded by floodwaters.

The female driver, 27, managed to escape, but her friend, 26, was dragged away by the strong current.

'We've had a number of areas in the Hunter Valley that have been prone to evacuation orders and warnings in relation to floodwaters,' Hunter Valley Superintendent Steve Laksa said.

State Emergency Service crews responding to the emergency saved a 40-year-old man who was stuck in a nearby tree due to floodwater.

The man was swept out of the tree but rescuers followed him into the water and managed to pull him to shore and he was taken to hospital.

Dozens of warnings are in place for the NSW Mid North Coast, Upper Hunter and New England

The wild weather has wreaked widespread havoc across NSW

Tens of thousands of households in the eastern state spent a night without power as heavy rain, floods and unprecedented snow wreaked havoc.

Since the onset of the severe weather, NSW SES has received more than 3,600 calls and responded to 2,092 incidents, including 25 flood rescues.

But a severe weather warning was cancelled on Monday ahead of more settled conditions, although riverine rises remain a risk as floodwater moves downstream.

Minor flood warnings are current for the Manning, Gloucester, Macleay, Severn, Paterson, Williams, and Gwydir Rivers.

On the other side of the country, almost 20,000 homes were without power in Perth on Sunday as storms swept through the city.