Three people have been trapped inside their home after a roof collapse, giant hail up to 13cm has smashed southeast Queensland and more than 40,000 properties have lost power as a violent supercell of nine 'life-threatening' severe storm fronts unleashes its fury this afternoon.

The Bureau of Meteorology warns nine storm cells continue to threaten the Brisbane, Ipswich, Logan and Gold Coast council regions following an afternoon of mayhem where massive hail smashed cars from the Darling Downs all the way east to the coast.

Huge 13cm hail was reported at Hillcrest, 9.5cm hail at Boronia Heights, 8cm hail at Springfield, 7.2cm hail at Amberley and 4-7cm hail at Gatton and Adare as the supercell tracked east from about noon today.

Three people, including two children, were forced to free themselves from their Ipswich home after their roof collapsed.

Emergency Services, including Police, Paramedics and Fire & Emergency Services arrived on scene at Wanderer Crescent, Springfield Lakes just after 4pm Saturday afternoon.

It's reported a tree fell on the house, causing a partial roof collapse.

The three occupants were initially trapped inside, but were able to free themselves. An ambulance spokesman confirmed the three occupants had not sustained any injuries

The wild storm was so furious motorists were forced to stop in the middle of the M1 and shelter in underpasses until the hailstorm eased.

Earlier, 8cm hail was reported in Forestdale and Springlake, and 7.2cm hail was reported in Amberley.

Hailstones measuring 4-7cm were reported around Gatton and Adare, west of Brisbane, at 12:30pm, 5cm hail was recorded at Seventeen Mile in the same region about 1pm, and 4cm hail was reported just northeast of Toowoomba about 1pm.

More than 30,000 properties were without power as the supercells ravaged the southeast.

These included more than 1000 in Brisbane, nearly 12,000 on the Gold Coast and more than 16,000 in Logan.

And the weather bureau has warned: "These thunderstorms are a significant threat to property and life."

At Springfield and Rosewood there were reports of hail damage to cars.

As of 3pm, very dangerous thunderstorms were detected on the radar for Brisbane CBD, Camp Hill and the area north of Kilkivan and Southport.

BOM warns very dangerous thunderstorms are expected to affect Logan City, Cleveland and the area northwest of Gympie by 3:30pm, and the area east of Gympie by 4pm.

The Sunshine Coast can brace for damaging winds, large, possibly giant hailstones and heavy rainfall.

Thunderstorms are forecast to affect Kilcoy, the area west Kilcoy and the area southwest of Noosa Heads by 3:30pm and Ipswich, Maroochydore and Caboolture by 5pm.

RACQ spokeswoman Lucinda Ross told The Courier-Mail plenty of damage has already occurred from the wild weather.

"We've been inundated with calls from members with damage and expect claim numbers to rise as this weather system moves across the region," she said.

"We've already had 90 property claims come in this afternoon and 80 claims for motor vehicle damage. According to our data, the worst impacted suburbs so far are Rosewood and Springfield.

"The quickest way to start your claim with us is to lodge it online and our team will get back in touch as soon as possible."

Giant hail in Springfield Lakes this afternoon. Picture: Liz Laenger
Giant hail in Springfield Lakes this afternoon. Picture: Liz Laenger

At 2.40pm, very dangerous thunderstorms were detected near Beenleigh, Logan City and Lake Manchester.

Very dangerous thunderstorms are forecast to affect Archerfield, Camp Hill and Upper Brookfield by 3.10pm, and Macleay Island and Slacks Creek by 3.40pm.

Damaging, locally destructive winds, large, possibly giant hailstones and heavy rainfall that may lead to flash flooding are likely.

Meanwhile, a large hailstorm has struck northern Gold Coast suburbs as a dangerous storm cell sweeps across the city.

Golf-ball-sized hail was reported in suburbs including Pacific Pines, Helensvale and Coomera.

The storm caused disruption as state election polling booths, with candidates and their supporters forced to take cover.

It came after Weatherzone metrologist Craig McIntosh said a storm cell which reached the Gold Coast at about 12.30pm had the potential to bring with it giant hail and destructive winds throughout the afternoon.

And a tree caught fire when struck by lightning at Wivenhoe.

Queensland Fire and Emergency Services has issued an emergency alert amid deteriorating wild weather across southeast Queensland.

Giant hailstones and destructive winds are forecast for vast swaths west of Brisbane. Residents in Lockyer Valley, Ipswich, Laidley, Jimboomba and Amberley, which have now been issued an emergency alert, are being urged to monitor local radio and the Bureau of Meteorology website.

Earlier this afternoon, voters were being urged to cast their ballots early as the Bureau of Meteorology warned wild and unpredictable conditions were threatening to bring chaos to the southeast.

It's the latest alert after a week of destructive storms across Queensland that has flooded roads and cut power to thousands of homes.



Originally published as 'Vote now': BOM's Warning as supercells forecast