The Department of Natural Resources says people have to be very careful about putting out cigarettes and campfires. It says people also need to watch where they dump ashes from woodstoves.
Ten wildfires were reported to the DNR the last week of November.
One of those calls came from a stretch of land along Highway 153 in Marathon County, where three separate fires scorched six acres.
"There were three fires," said DNR Investigator Mike King. "Two of them were very small, and another was a little larger.
"They spread very fast because of the wind conditions we had." King said.
The DNR says they think a passing tractor-trailer may have started the fires.
"We do have witnesses that say they saw a truck shift a load," said King, "which caused the undercarriage of the vehicle to throw some sparks off, and those sparks ended up in tall reeds."
Edgar and Stratford fire departments responded to the fires. King says it's fortunate the fire departments responded as quickly as they did.
"The fires burned toward a couple of buildings and a farm," said King. "Luckily, the Edgar fire department was able to get there fast to stop any damage from occurring to any buildings."
King says witnesses gave the DNR name of the company that was on the truck, and investigators will be following up on that information.