UPDATE 12pm
COUNCIL has urged residents not to drive through floodwater after emergency services conducted five swiftwater rescues in the Redlands.
A driver had to be rescued after her car ended up on a guard rail on Springacre Road, Thornlands.
The other swift water incidents occurred on Vienna Road at Alexandra Hills, Duncan Road and Avalon Road at Sheldon, and Pitt and Nelson Road at Wellington Point.
Mayor Karen Williams said it was concerning that some drivers took unnecessary risks.
"They were very lucky their actions didn't end in tragedy," she said.
"More rain is forecast over the next couple of days ... so I encourage residents to go early to collect sandbags.
"I also encourage residents whose properties are prone to flood to have sandbags at their home ready for significant rain events."
Cr Williams said council would continue to monitor water over roads but most of the flash flooding had subsided.
"Leslie Harrison Dam, which is managed by Seqwater, started to spill last night and our catchments are waterlogged, so any further rain could lead to more flooding," she said.
Weather Bureau meteorologist Rosa Hoff said a trough had pushed from western Queensland towards the coast yesterday, enhancing showers and rain.
According to the bureau, there is an 80 per cent chance of rain, but it is expected to be minimal compared to last night's deluge.
"We do still have a residual chance of seeing the odd rumble of thunder around (the south-east) but we're not expecting severe storms south of Kingaroy today," Ms Hoff said.
"We are seeing below average temperatures about Brisbane and the south-east coast.
"Currently, we're expecting temperatures to be between 2 and 5 degrees below average for tomorrow and Thursday in response to that cloud cover and cold south-easterly winds.
"We will then see the skies clear up with a chance of sunshine returning for the weekend."
Council's sandbagging stations are open until 6pm.
Contact the SES on 132 500 if you require assistance or if you need sandbags outside sandbagging station hours.
For life-threatening emergencies, contact triple zero (000) for Police, Fire and Ambulance services.
EARLIER
HEAVY rains battered the Redlands on Monday night, with cars caught in flash flooding, the Leslie Harrison dam spilling and more than 120 calls to the SES.
The Weather Bureau recorded 190mm at its Alexandra Hills station, with 30mm more than the January average falling in one night, and more rain predicted for Tuesday.
It was the highest 24 hour rainfall total the station has recorded since it opened in 2015, beating 141mm received exactly a year ago.
Most fell between 6.30pm and 7pm.
Paramedics assessed three people after cars became caught in floodwaters at Birkdale and Thornlands.
A car was stranded on Springacre Road at 7.36pm, while another was on Pitt Road and Collingwood Road at 7.41pm.
No one was injured.
On Tuesday morning, a car was still stuck where it had been washed onto a roadside barrier on Springacre Road, with one lane closed.
QFES Commissioner Greg Leach said the SES had received 170 calls for help, mainly for leaking roofs, fallen trees and sandbagging.
Of these, 121 were in the Redlands.
Queensland Fire and Emergency Services conducted 15 swiftwater rescues in the south-east, including helping six people trapped in vehicles.
Commissioner Leach said people needed to act responsibly around floodwaters.
"When you drive into floodwaters, not only do you put your own life at risk (but also) the lives of the swiftwater rescue firefighters," he said.
Police Deputy Commissioner Steve Gollschewski said it was disappointing to see people failing to heed messaging about driving in floodwaters.
"Here we are having a flash flood event here in the south-east and we have to do 15 swiftwater rescues, including six where people had put their own lives and other people's lives in danger.
"We are only (in) January in a La Nina year. We are expecting wet weather for a protracted period.
"People need to listen to the messaging and they need to do the right thing."
Leslie Harrison Dam is spilling, with Seqwater recording 107.7 per cent capacity on Tuesday morning.
It was the highest the dam has been since early February 2020, during a week where the Redlands copped 277mm of rain before receiving a downpour of 109mm days later.
Council sandbagging stations opened on Tuesday morning at Cleveland, North Stradbroke Island, Russell Island and Macleay Island.
A Weather Bureau spokesman said severe thunderstorms were still a risk around the south-east with more heavy rain possible.
"On the bright side, it will be more isolated activity compared to the wide-spread activity we had last night," he said.
Weather Bureau data from Redland Bay shows its highest daily rainfall was 281mm on January 25, 2012.
It was followed by 205mm on May 3, 1996.
Data from Ormiston shows 250mm fell on June 30, 2005.