WWMT - wwmt.com - Search Results The following is an archived video story. The text content of that video story is available below for reference. The original video has been deleted and is no longer available. Residents allowed back into Iowa city after fireDES MOINES, Iowa (AP) - Authorities have lifted an evacuation order for residents of a small northern Iowa city, following a fertilizer fire at the local airport.The Worth County Sheriff's Office says the evacuation was called off around 3 p.m. Thursday. The order was originally issued after a fire broke out around 9 a.m. in a storage-like building that contained fertilizer at Northwood Municipal Airport.Officials say a plume of smoke hung over the city, and the evacuation was necessary because of concern over the chemicals inside the building.Mercy Medical Center-North Iowa in nearby Mason City says four people sought treatment following the fire. Their conditions have not been released.Northwood has a population of about 2,000 people. It's located on the Minnesota state line about 130 miles north of Des Moines.