Thick Fog Causes Transport Delays Across Sydney

All ferry services have been cancelled.

A blanket of thick fog has engulfed parts of Sydney city, majorly disrupting transport services.

All ferry services have been cancelled because of low visibility in the Harbour and the Parramatta River, with buses set to replace ferries on the F1 Manly to Circular Quay service.

The fog is also expected to affect some international and domestic flights.

The Bureau of Meteorology has also issued a warning to drivers, saying that visibility on the city's roads might only reach 200 meters.

“Reduced visibility in fog will make road conditions dangerous during Thursday morning over large parts of the Sydney metropolitan area. Motorists are advised to take extreme care,” the bureau said on its website.

Some flights in and out of Sydney domestic and international airports face delays. Travellers have been advised to check their flight's status before heading into the airport.

Some Sydneysiders were less than impressed with the loud fog horn that startled them awake in the early hours of Thursday morning.

Who needs an alarm clock when you've got a giant ship in the Harbour?