Flights were cancelled and trains suspended as intense rain and flash flooding wreaked havoc in Sydney on Wednesday morning.
The NSW State Emergency Service received almost 260 calls for help by 7am, including 11 flood rescues.
"It's turning into being a wild day," SES regional controller Greg Murphy told Seven Network.
According to Weatherzone, Observatory Hill received its entire November monthly average in "less than two hours".
"Between 5:20am and 7am, the city collected 84.6mm and the November average is 83.8mm," it tweeted.
Drivers have been told to stay off the roads as public transport across the city has been similarly affected.
Social media users have been sharing images and video of the wild weather under the hashtag #SydneyStorm.
