Firefighters are planning to back burn near Kooralbyn on Tuesday night as they battle to contain the region’s biggest bushfire of the season to date. 

So far, one shed has burnt in a blaze which has lasted for more than a week and when mapped on Sunday had burnt more than 5,300 hectares.

Residents between Kooralbyn and Allandale are being warned they need to be ready to flee with a watch and act level warning was issued at about 12.30pm on Tuesday.

With no significant rain forecast, firefighters will be dependent on water bombers to quell blazes in inaccessible country, but say their efforts are being disrupted by people using drones. 

“You need to be ready to follow your bushfire survival plan,” the Queensland Fire and Emergency Services warning said. 

“If you do not have a plan, or intend to leave, you should be ready to leave the area because the situation could get worse quickly.”

The fire is burning to the west and north-west of Campbell Drive. 

Allandale fire warden Mark Meldrum said the fire had been “poking along slowly” for more than a week.

Mr Meldrum said it had not been a particularly raging nor threatening fire, but had proved impossible to extinguish as it burned through heavily timbered and inaccessible country. 

“The only way to control it is with air operations,” he said.

A QFES spokesperson said firefighting aircraft were water bombing the fire on Tuesday. 

But those efforts are being disrupted by drones. 

“Private drones are hampering air operations,” a QFES statement read. 

“Drones are forbidden in areas where emergency services are operating.”

Mr Meldrum said firefighters had been assessing the blaze from the air, were setting up an incident control centre and making a plan to contain the fire. 

Conditions have been favourable for firefighters, with east and south-easterly winds pushing the blaze away from Kooralbyn and temperatures “cool enough” so far. 

Mr Meldrum said the main concern for now was for scattered rural properties around Greenhills Road and that the fire could burn for a number of days yet. 

“[But] if we get rain, it should bring it to a fairly quick stop,” he said. 

Bureau of Meteorology’s Shane Kennedy said firefighters could expect the relatively favourable conditions to continue but should not be counting on rain anytime soon.

Temperatures are expected to drop to about 10 degrees overnight before hitting a maximum of 27 degrees on Wednesday, with a range of 9-28 degrees on Thursday. 

Winds are expected to blow southerly overnight between 10 to 15 kilometres per hour, picking up to between 20 to 25km per hour from a south to south-easterly direction on Wednesday. 

Light easterlies are expected on Thursday. 

“We are not expecting any dangerous wind surges,” Mr Kennedy said. 

He said there was very little chance of any significant rainfall but that humidity would be high, preventing “drying out”. 

Call Triple Zero (000) immediately if you believe you or your property is under threat.