Firefighters from Audubon were called to a reported hog barn fire several miles northwest of Audubon, Tuesday night. The call about the fire at 1038 170th Avenue came in at around 5:40-p.m. A person answering the phone at the Audubon Fire Department said a spark from a welder triggered a flash fire in methane pit. The fire blew itself out before firefighters arrived. No damage or injuries were reported. Fire firefighters were back in the station by around 6:35-p.m.