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BOM warns forecast storms and rain for Queensland could cause flash flooding, break rainfall records

Monday November 22, 2021 - 03:47 AEDT
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People in south-east Queensland should keep an umbrella handy through the week. - ABC

November rainfall records could tumble as parts of Queensland prepare for another week of storms and wet weather.

South-east Queenslanders woke to severe thunderstorm warnings this morning, as intense rainfall was recorded across the region.

Ma Ma Creek in the Lockyer Valley recorded 72 millimetres in an hour, while 45mm fell in less than 30 minutes in Gatton.

The SES received 11 calls for assistance with sandbagging and property repairs.

In Forest Hill, near Gatton, entire backyards were flooded and roads were blocked forcing residents to stay home from work. Water in David Purvis's yard was over knee deep.

"It hasn't been this bad in years ? the chicken pen ? was almost up to the roof," he said.

"I moved my car to higher ground ? but it's subsiding quickly which is good.

His neighbour Will Harding usually leaves for work at 6:45am. 

"No chance today, our whole yard's ankle to knee deep," Mr Harding said.

Meteorologist Helen Kirkup said there was still some active thunderstorms expected to hit parts of Queensland through the afternoon.

"It's a pretty decent system," Ms Kirkup said.

"So very intense rainfall, coming from some of the thunderstorms.

"But in general, through that area, there's some pretty widespread rain and showers as well so I think we'll continue to see that through this morning and then generally moving slowly eastward.

"So tomorrow, [we're] still expecting showers and thunderstorms around some parts of that south-east corner and up towards the Capricornia Coast, then we'll see an easing trend into Wednesday."

Flooding possible later in the week

But Ms Kirkup has warned that Wednesday would not spell the end of the week's wet weather.

"The next main trough system that's going to come through, and again bring widespread showers and thunderstorms, will be Thursday and in the east until Friday," she said.

"So we'll see a second sort of fairly intense band of storms and showers move through at the end of the week."

Mr Kirkup said moisture being dragged in from the Indian Ocean and Coral Sea was behind the weather system.

"Just with the huge influx of moisture from the ocean, there's a lot in the atmosphere so when it sort of combines to start falling on the ground, we are getting some really quite soaking rain across the region," she said.

"It'll be quite interesting to see, when we do get to the end of November, what those rainfall stats show because it's highly likely that we will be seeing some sort of close-to-record November rainfalls in some regions.

"The other thing for Thursday and Friday is that it's not out of the question that we'll see some of these river systems start to increase their levels again and so we are wary that we could see renewed rises in some of those rivers.

"And it's not out of question that we could get some of those rivers in flood again at the end of the week."


© ABC 2021

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