A few years ago I found my wife was burning a few small pine branches. She had a small fire that would probably meet the definition of a "recreational fire" which would not require a burning permit. I had gotten a permit a few months prior but it has expired. So I says to her, how about I get the loader and grapple and put a few larger branches on her small fire. So, I dropped a large pile of pine brush that was extremely dry and still had most of the pine needles attached. Well, her little recreational fire went from about 2 feet high to a swirling vortex of flames shooting about 30 feet into the air. It was in an open area with green grass around the burn area so I wasn't too concerned about it getting out of control.
But, apparently someone driving by didn't agree. In less than 15 minutes I could hear the sound of an emergency vehicle siren approaching. At about the same time a highway patrolman pulled off to the side of the road. He got out of his car and appeared to want to descend the road ditch to investigate but gave up because the ditch was too steep. But by this time my 30 foot fire was probably down to about 7 or 8 feet and my wife had positioned a couple of lawn chairs in the area. So when the fire trucks went by (about 5 mph) they must have thought this was a recreational fire, perhaps above the limit, but still a recreational fire so the continued down the highway, turned around and went back to town. I never heard from them so I breathed a sigh of relief.
I pause to think what that would have cost me had they claimed I was burning without a permit therefore requiring a fire department call. In Minnesota we can apply for a permit on line through the DNR for $5.00 per year and you activate it by simply calling a toll free number, entering your permit # and then calling the local fire department to tell them you are burning. I keep all of that information on my cell phone and activate the permit any time I get the itch to burn.