Sydney has been hit by severe thunderstorms, bringing lightning and flooding across the city, with the southern suburbs hit especially hard.
Showers were expected this afternoon but the storms hit with little warning.
They were detected on weather radar just before 5pm near Sydney airport, Botany, Canterbury, Hurstville and Marrickville.
Some roads were flooded and people caught outdoors forced to run for cover but the SES say they have only had a few calls for help, all for leaking roofs, and all in the Canterbury, Sutherland, and Kogarah areas.
However, they say that number could quickly climb as people arrive home from work and discover more damage.
On the trains the Bankstown rail line was flooded at Marrickville and was closed between Sydenham and Campsie.
The bureau recorded 12 millimetres of rain in just half an hour, at Mascot - they had 26 mils at Appin.
And the temperature at Sydney Airport dropped from 27 to 21 degrees in an hour.
The airport also copped a wind gust of 60 kilometres an hour.
There is still the potential for more storms hitting Sydney over the next few hours.
The bureau has issued a warning for the metro area, the Hunter and large parts of southern NSW.
Conditions should ease off though in the next few hours.
But there is a chance of further storms between 3am and 6am tomorrow as the front pushes through Sydney.