'What fog?' Sydney weather

When a Sydney Morning Herald photo editor asked a few photographers to "get some pictures of the fog" on Wednesday morning, they all said one thing: "What fog?"
Standing in Pyrmont and looking east at 9.05am Sydney was coated in a thick blanket of white fog, the skyline of the city invisible to the eye.
At the same time, those looking west past Mrs Macquaries Chair were treated to skies that were a rich periwinkle blue - Sydney was putting on a real show.Bureau of Meteorology forecaster Tim Constable said the contrasting skies were the product of a post-rain-event fog.
"The fog started in the west before sunrise, then we had a burst of rain just afer 5am, creating ideal conditions in the CBD with plenty of moisture for the fog to drift towards the west."
Fogs generally occur when relative humidity increases to 100 per cent.
"Basically the fog formed in the west and then slowly moved east, so the western suburbs would have seen the fog before the sun rise and then it slowly moved east," Mr Constable said.

"But it didn't get all the way to the coast through the CBD area, because by the time it got that far east the sun had come up and then it begins to warm up and we also get wind increasing in low levels, so the fog generally mixes out."
Mr Constable said that Sydney was in for a max of 27 degrees in the west today and 26 degrees in the city, with the possibility of a shower in the afternoon.