Firefighters are bracing for another difficult day of strong winds, as they battle dozens of blazes across New South Wales and Queensland.

Fires near Armidale and Tenterfield are burning at “Watch and Act” advice level, with more than 800 volunteers deployed over the weekend.

Among them was volunteer firefighter Neville Smith who was caught in the fire at Tenterfield, on the NSW-QLD border.

The 66-year-old suffered serious burns to his face, arms, back, hands and airways and is in a critical condition.

Raspberry Rd, Jeogla (Armidale LGA): Fire activity is increasing and is pushing smoke towards Carrai, Comara, Bellbrook and Lower Creek areas. #nswfires #nswrfs pic.twitter.com/TkISdRJ3uL

— NSW RFS (@NSWRFS) September 8, 2019

Strong winds are forecast for Monday with NSW RFS Inspector Ben Shepherd telling Alan Jones conditions are making things extremely dangerous.

“It’s going to be another long and testing day… there seems to be no real reprieve.

“The landscape is so extraordinarily dry, any little bit of wind is really starting to see these fires move.”

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More than 50 fires are burning across Queensland as well, with dozens of NSW firies being sent north of the border to help out.

Bushfire warnings have been downgraded but there are still concerns around fires at Binna Burra in the Gold Coast hinterland and at Stanthorpe-Applethorpe on the Granite Belt.

The fires have since been downgraded to Advice level but more than 20 properties have been destroyed since Friday.

Southern Downs Mayor Tracey Dobie tells Alan Jones firefighters have done an incredible job to bring the blaze under control.

“They have built containment lines around the outside of that fire.

“The men and women of the fire service, there aren’t words to describe them.

“They have fought that fire in our region, using the minimum amount of water they could.”

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Image: Nine News