Severe storm system to bring heavy rain, hail and damaging winds to Melbourne, Canberra, Sydney and Brisbane

The Bureau of Meteorology (BoM) has placed storm warnings on Melbourne, Canberra, Sydney and Brisbane as a cold front collides with warm, humid air across Victoria, New South Wales and southern Queensland. Forecasts call for heavy rain, thunderstorms and hail, with wind gusts potentially surpassing 125 km/h, raising the risk of flash flooding and damage to trees and property.

Melbourne and eastern Victoria are expected to experience the first wave of storms on Saturday afternoon, followed by a progression eastward toward Canberra and inland New South Wales, reaching the east coast on Sunday. The BoM warned that areas that have already seen elevated rainfall in the past two weeks are especially vulnerable to flash flooding.

"It’s this follow-up band of storms which could pack a punch," BoM meteorologist Angus Hines said on Saturday.

"Expecting some very active storms here a little bit later on in the day, mid to late afternoon for many of these areas, and potentially not until the evening hours by the time we’re looking at storms getting out towards the east coast," Hines added.

"If you do live through this area, tomorrow is definitely a day you’ll want to keep a watch on the radar to see if any big storms are headed your way," he advised.

The warning area extends northward through inland New South Wales to the southern interior of Queensland and along the coast south of Sydney, including Wollongong and the Illawarra. Severe thunderstorms are most likely in the NSW mid-north coast, the Northern Rivers, the tablelands and the Hunter region, with the potential for large hailstones, heavy rainfall and flash flooding.

A severe wind warning also covers the mountains of northern Victoria and southern New South Wales, where gusts over 100 km/h were recorded on Saturday morning.