NSW swamped by heavy rain, waves and wind

Warnings have been issued for several area along the NSW coast, which are predicted to be belted by heavy rain and strong winds with flash flooding.

THE STORM BY NUMBERS:

* 70-90mm rain across Sydney with 115mm recorded at Ingleburn

* 154mm rain at Robertson in Illawarra region

* 12-metre waves recorded at Botany Bay

* Dangerous five-to-seven metre waves predicted along NSW coast

* Destructive winds gusting up to 125km/h forecast

* About 500 people across state ordered to leave homes

* Power out to at least 86,000 homes and businesses across the state, with 60,000 affected in Illawarra region