Perth weather: Thunderstorm, flash flooding hits WA as rain smashes northern suburbs [Video]

Unprecedented rain has caused havoc in Perth’s northern suburbs with flash flooding leaving people trapped in their cars, homes damaged, and hundreds without power.

The 100mm of rain in less than an hour was not forecast in advance — leaving emergency services scrambling to help people mainly in Clarkson, Butler, Ridgewood, and Nowergup.

Crews were called to Winton Road, Connolly Drive, and Hester Avenue in Joondalup after reports of multiple cars being caught up in the flash floods. SES teams worked to assist people trapped in their cars.

Department of Fire and Emergency Services incident controller Glenn Hall said more than 45 calls had been made to SES due to the torrential rain, and he expected more as people headed home from work.

Most of the calls have been about flooding and water ingress in homes, …