Thousands lose power amid wild NSW winds

Emergency crews are trying to restore power to nearly 4000 properties to the west and south of Sydney as a cold front brings damaging winds across NSW.

Thousands of homes and businesses around NSW are without power as damaging winds whip parts of the state.

A cold front began moving across southern NSW early on Thursday, with gusts of more than 100km/h recorded in some areas including Thredbo and Cooma.

The Bureau of Meteorology has issued a severe weather warning for the Illawarra, Snowy Mountains, and sections of the South Coast and Central Tablelands.

A second cold front is expected to cross NSW on Friday and Saturday.

The strong winds have already brought down trees and branches over powerlines.

Endeavour Energy said it was working to restore power to nearly 3700 properties across the Southern Highlands, Blue Mountains and South Coast.

Almost 100 electrical hazards have been reported since the early hours of Thursday morning, with crews patrolling those areas to ensure safety.

Meanwhile, fishers and boaties are being told to be extra cautious with a strong marine warning in place along the NSW coastline.

Road and Maritime Services are urging people to take extra care on the water and be aware of hypothermia.

Choppy conditions are expected on exposed bays as well as dangerously rough conditions offshore and there's a risk of boats dragging or breaking free from moorings, the RMS said.

Rock fishers have also been urged to check weather forecasts, avoid fishing near dangerous surf and wear life jackets.

Conditions are expected to ease on Sunday but there may be an increase in ocean swell.

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