Flights and ferry services were cancelled after thick fog covered Sydney Harbour on Thursday morning. Sydneysiders shared photos of the Opera House, Harbour Bridge and other landmarks as they disappeared from sight.
Domestic and international flights at Sydney Airport were delayed due to low visibility procedures in force until just before 8am.
Airservices Australia advised passengers to check with their airlines for any cancellations.
Services including the Manly ferry and ferries along the Parramatta River and to and from Neutral Bay resumed later. But all services were briefly halted due to low visibility at 7am.
Transport for New South Wales warned commuters to allow extra travel time.
On social media, Sydneysiders began sharing photos of the phenomenal morning fog.
Sydney fog at 6:55am @7NewsSydney pic.twitter.com/3lOyNm1IXS
— Jason Morrison (@JasonMorrisonAU) July 4, 2018
Morning Sydney! You’re waking up to some pretty heavy fog causing delays to ferries and flights this morning #tennews pic.twitter.com/vnlrzZQ4Ks
— Andrew Denney (@Andrew_Denney) July 4, 2018
Good morning Sydney. #fog pic.twitter.com/3UKZLl2SuT
— Jonathan Harley 🚴 (@jharleyaus) July 4, 2018
The Sydney Harbour Bridge disappears into thick fog to the soundtrack of ship horns. Flights delayed and diverted, ferries cancelled @abcnews @BreakfastNews pic.twitter.com/qFm28zU9uX
— Rachel Hayter (@_rachelhayter) July 4, 2018
The Bureau of Meteorology told residents to take care on the roads, and forecast temperatures of up to 24C once the fog cleared.
Some flights from Sydney airport were also delayed.
That little black line in the clouds about 1/4 of the way in from the right is the Sydney Harbour Bridge, otherwise almost entirely obscured by fog pic.twitter.com/2VmwHSwjJs
— David Fickling (@davidfickling) July 4, 2018