Christmas Eve revellers were sent running for cover after heavy rain partially flooded a popular Brisbane bar overnight.

Staff at the Regatta Hotel at Toowong scrambled to move furniture undercover and keep glasses from blowing over when severe thunderstorm rolled into Brisbane about 7.30pm.

Heavy rain on Christmas Eve partially flooded the Regatta Hotel. Credit:Lydia Lynch

The storms dumped 20-40 millimetres of rain across most of the south-east and left about 10,000 homes without power, mostly in Brisbane and particularly West End and Chermside.

Fire-impacted areas around the Gold Coast Hinterland and Scenic Rim recorded the most rainfall, about 50-60 millimetres.