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National

Why heavy rain followed by high wind in south-east Queensland poses a unique threat

A tree knocked down by winds in Kenmore. (ABC News: Michael Rennie)

Just when you thought Mother Nature had thrown everything at Australia's east coast over the past few months, along come more severe weather warnings in the form of powerful winds.

These pose their own threats, with authorities warning the combination of wet soil and high winds is bringing dangerous conditions.

What are they worried about?

Weather and emergency authorities are warning that trees and powerlines are likely to come down, endangering people and homes.

After record-breaking May rainfalls, the ground is saturated, meaning tree roots can't hold on as tightly as they usually would in drier soils.

Now add in gusty strong winds, and those trees could topple.

In a weather warning this morning the weather bureau is forecasting "damaging winds with peak gusts in excess of 90 kilometres per hour are possible over the south-eastern interior, extending across the south-east, including Brisbane, Gold Coast and Sunshine Coast.

Strong winds throughout south-east Queensland caused damage to trees after months of rain. (ABC News: Alexandria Utting)

"Saturated soils in south-eastern Queensland are bringing an increased risk of gusty winds toppling trees and powerlines," the Bureau of Meteorology (BOM) warns.

Early Tuesday morning a tree came down onto powerlines in Kenmore setting off an array of sparks and threatening to start a fire.

A neighbour captured spectacular footage of the incident.

The falling tree in Kenmore took down power lines and threatened to start a fire.  (Facebook: Agnela Burke)

There have also been reports of trees down in Carseldine and East Brisbane.

Queensland Fire and Emergency Services received 33 calls for help since 7am, mostly for trees and branches down and some for roof damage.

But the BOM warns tree falls could occur across a wide range of locations.

"Locations which may be affected include Gold Coast, Toowoomba, Brisbane, Maroochydore, Gympie, Stanthorpe and Ipswich," it said.

When will the weather ease off?

A car sustains damages in Dayboro after a tree fell through the windscreen.  (Supplied: William Parsons)

The weather bureau's Helen Reid said windy conditions are expected to stick about into Wednesday and beyond, although ease off for Brisbane.

"It is possible there will still be a [damaging winds] warning in the regions surrounding [Brisbane] at least, in the course of tomorrow as well," the forecaster said.

Then things are set to get colder.

"That south-westerly wind will be bringing in just that little bit more cooler air," Ms Reid said.

"As those winds ease off into Wednesday and into Thursday, we're expecting minimum temperatures to be in the single figures by the time we get to Thursday morning."

Ms Reid suggests finding a sunny spot out of the wind to keep warm.

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