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South-east Queensland hit with heaviest November rainfall in decades as more wet weather to come amid La Niña

By Jessica Stewart, Wednesday November 24, 2021 - 06:51 AEDT
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The BOM is warning south-east Queenslanders not to pack the umberellas away just yet with rain expected until December. - ABC

Brisbane has experienced one of its heaviest November downpours in decades ? and there is plenty more on the way for south-east Queensland. 


Heavy rain in the region has placed a southern Queensland river on a major flood watch that is expected to peak later today.


Bureau of Meteorology (BOM) meteorologist Helen Reid said Brisbane had been drenched in 121 millimetres in the past 24 hours.


About 142mm of rain has fallen in the Brisbane suburb of Eagle Farm in the past 24 hours, while Bulimba recorded 134mm.


Ms Reid said the wet weather was far from over and rain was expected until the beginning of December.


"We're expecting more later today, a couple of showers still continuing through today," Ms Reid said.


"Tomorrow is where we add in the mix of a thunderstorm as well.


"By the time we get to Friday, we're looking at those thunderstorms potentially bringing heavy rainfall.


"We're still expecting showers and rainfall right through until the start of summer."


Some rain gauges in central and southern Queensland have already recorded hundreds of millimetres of rain this month, with more expected over coming days.


More than 500mm fell at Samuel Hill, just north of Yeppoon, while 244mm fell in Bundaberg and 204mm was recorded in Brisbane so far this month.


Rainfall records to be broken amid La Niña


Ms Reid said there was every chance there could be a few locations that will experience their wettest November on record.


"It is the line-up of not just La Niña but the Indian Ocean Dipole, [and] other factors in the broader planetary scale of the weather systems as well," she said.


"That's all been allowing a lot of humidity and moisture to move right across the state.


"Then as we have troughs move across Queensland, they provide a focal point for rainfall.


"What we see pretty much on a weekly cycle at the moment is this intensity of the rainfall increasing with higher amounts of thunderstorms, rain gauges overflowing, rivers flooding and we're seeing that happen again during the course of this week."


Ms Reid warned La Niña is expected to dump more rain across the state this summer than we would usually see.


She said daytime temperatures will be cooler due to cloud cover but will get warmer overnight.


"There will be places where we can expect to have rainfall records broken," Ms Reid said.


Major flood warning issued


Meanwhile, a major flood warning has been issued for the Macintrye River, located near the Queensland-New South Wales border, that is expected to peak late on Wednesday.


The river's water level at Goondiwindi currently sits at 7.96 metres and is expected to peak at Boggabilla at 9.50m.


While the BOM warns the river is rapidly rising, it said it does not expect any impact to properties at this stage.


"Rainfall right across Queensland is going to increase river conditions, river heights and lead to those flooding conditions being exacerbated," Ms Reid said.


"There are numerous floods through southern Queensland that have dropped below minor.


"But with the rainfall expected across all of Queensland, including the south with some heavy falls expected, those rivers are expected to increase.


"Everyone just needs to take care. Keep up to date with warnings, particularly with the flood situation in the coming days."







- ABC

© ABC 2021

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