Photographers and meteorologists alike have been treated to amazing cloud formations over south-east Queensland this week.

Dense cumulonimbus clouds associated with thunderstorms and long thin lines of fibratus clouds have spread across skies due to the above-average heat.

Brisbane experienced five days of hot weather this week with the mercury reaching temperatures in the late 30s yesterday.

Social media accounts have since been littered with photographs of the breathtaking cloud formations.

Moreton Bay was one of the most popular spots for cloud spotting, with photographers flocking to Wellington Point, Sandgate and Shorncliffe.

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Bureau of Meteorology (BoM) forecaster Sean Fitzgerald said although conditions had been hot, some of the cloud formations photographed had been due to ice in the atmosphere.

"There are two layers of clouds with one layer of cirrostratus fibratus which is the lines of clouds that you see," he told 612 ABC Brisbane's Steve Austin.

"It's basically ice cloud that sits below a very high level inversion.

"There has been a lot of it about in south-east Queensland and the layers form up like that."

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Mr Fitzgerald said all cirrus clouds consisted of various amounts of ice deposits.

"When you see fibratus clouds in the air that looks like hairs, that's when you see ice," he said.

"At the top of thunderstorms you will also see a lot of ice as well with fibratus clouds.

"That's why in cirrus stratus clouds you will see a halo form out of the associated fibratus."

Dry storms with heat lightning in the late afternoons have also added to the colourful cloud formations.

Many photographers spent hours in the heat waiting to capture the evening storm heads on Tuesday.

Photographer Beth Wode said on Instagram she had her "feet in the water trying to escape the day's heat".

Fellow photographer Ben Mulder said it "was pretty amazing to see the storm change colour throughout the afternoon".

The weather bureau has forecasted cooler temperatures over the next few days.

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