FIRE roared across about 150 acres of grassland in Dalveen yesterday afternoon, threatening structures in its path.
Fifteen units and 45 personnel were despatched to the area on Sorrento Rd about 4.30pm.
Incident controller on scene Jim Mitchell said it was believed the fire started on Tuesday, and reignited yesterday.
"It was reported mid-afternoon (on Tuesday) and that the fire was started by a welder," Mr Mitchell said.
"It was supposed to have been monitored but got out of control."
Group officer Alan Payne said there were structures under threat, but at time of print last night all were being protected.
Water bombers were deployed and made a number of trips to the fire, re-filling in Warwick, but Mr Payne said the wind was "working against us".
"We had a structure under threat, but the water bombers have taken that threat away," he said. "We want to put a control line down so it doesn't reach the rabbit fence."
The fire was still out of control at time of print last night.
Meanwhile a grassed area at Lake Leslie Tourist Park caught alight yesterday while a groundsman was mowing the grass in preparation for the bushfire season. The mowing was in the far end of the park and the wind direction meant the fire took off away from the camping grounds.
"We were trying to get everything down for the bushfire season," Lake Leslie Tourist Park owner Adam Bennett said.
"The groundsman was mowing the grass then he came over and said we have a problem.
"We tried putting it out while we were waiting for the firefighters to arrive with wet blankets."
The fire started under the lawn mower and jumped across a walking track to another paddock.
Firefighters got the call at 12.35pm and arrived by 12.53pm.
The fire was extinguished by 1.40pm but rural firefighters continued to monitor the scene for several more hours.
Earlier in the day two more fires occurred at Back Plains along Clifton-Pittsworth Rd.
A Queensland fire spokeswoman said the blaze started at 8.06am and firefighters were on scene by 8.35am.