MORE heavy showers are expected to fall again today after a month's worth of rain led to flash flooding across parts of the southeast on Wednesday.

The deluge saw 111mm of rainfall on Mount Coot-Tha, 91mm at Alderley and 78mm at Bracken Ridge in under five hours on Wednesday. The November rainfall average for Brisbane is 100.1mm.

It comes as weather watchers warn of a "major rain and flood event" for the entire southeast of the continent.

The Bureau of Meteorology has issued an unprecedented severe weather warning for the entire state of Victoria, calling it "the most significant rain event for many years".

This is a very, very big weather event, we are in uncharted territory," senior meteorologist Scott Williams told reporters on Wednesday.

Sky News meteorologist warned it will be a huge week of weather.

Wednesday's rainfall in Brisbane caused severe flash flooding in Brisbane's north which trapped one woman inside her vehicle due to rising floodwaters at Toombul."

Queensland Fire and Emergency Services were on their way to the incident in Widdop St, Toombul, about 1pm but were turned around.

Two men, reportedly council workers, waded through waist-deep floodwater to rescue the woman, with one having to piggy-back her to safety.

The incident occurred near the Toombul Shopping Centre, which closed part of its carpark due to the rapidly rising water.

Witness Simon Anderson said the woman appeared extremely frightened.

"I think (the council worker) was relieved, she was very scared still," he told Ten News.

The Bureau of Meteorology has forecast a very high chance of showers again today, becoming heavy at times.

The weather system is expected to ease by Saturday before a new trough system moves in on Sunday creating further showers and thunderstorm activity for eastern parts of the state.

Forecaster Lauren Murphy said Brisbane had notched 74.6mm of rain so far this November, and was expected to exceed the average rainfall for the month (97mm).

The same was true of the Sunshine Coast, where 147.8mm of rain had fallen this month - nearly twice the November average of 81.8mm.

"Spring is a transition season; there's usually quite a bit of variability year-on-year for these things," Ms Murphy said.

Temperatures along the southeast Queensland coast are not expected to reach higher than 29C all this week, with lows of around 20C in Brisbane, the Sunshine Coast and the Gold Coast.

Wet weather is expected to linger in the southeast. Picture: Mark Cranitch
Wet weather is expected to linger in the southeast. Picture: Mark Cranitch


'You are going to get smashed'

THAT'S the word from meteorologists about a looming seven-day downpour that could dump up to 200mm of rain across the Gold Coast over the next week.

Forecasters warn several intense weather systems will develop over the Gold Coast in coming days which are likely to bring 80mm-100mm of rain but could dump as much as 200mm.

Two weather systems - a surface trough from the Coral Sea dragging moist air, and an upper trough - are creating instability, causing widespread rain Wednesday before conditions ease Thursday.

The Bureau of Meteorology predicts up to 55mm of rain could fall on the Gold Coast by the end of Thursday, bringing the chance of thunderstorms.

But that won't be the end of the wet weather.

It'll ease on Friday and Saturday before a super intense system - a surface trough which combines with a cold front from the south and an upper level trough - arrives on Sunday, bringing torrential rain and the likelihood of storms for two days.

"It'll be a beast, that's going to bring a lot of rain," Weatherzone meteorologist Jacob Cronje warned.

"It's going to be widespread inland and across the coast, you're going to get smashed."

Monday is tracking to be the Coast's wettest day, with Weatherzone modelling forecasting a wet 80mm.

However, the Bureau of Meteorology predicts a more moderate 30mm of rain.

In total a minimum of 34mm and a maximum 200mm of rain could fall across the next week according to forecasters.

If the rain predictions for Sunday and Monday transpire, it could mean the Gold Coast could come close to exceeding the monthly December average of 142mm in just the first three days.

The Gold Coast has recorded 72.2mm of rain so far this November but the predicted downpour could also mean we exceed the average of 121.3mm.

Daytime temperatures are expected to hover around the 29C mark all week.

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