Authorities in Japan have warned that the country’s biggest wildfire in decades is likely to spread, after it damaged dozens of homes and forced more than 1,000 people to flee. Fires continued to rage a week after they broke out in the city of Ofunato, on the north-east coast, with weather officials speculating that this year’s unusually dry winter and strong winds were to blame. As of Monday, the fire had spread through about 2,100 hectares of land, damaged 84 homes and forced 1,200 residents to take refuge in school gymnasiums and other shelters. A further 2,000 are staying with friends or relatives. …More than 2,000 self-defence force [SDF] troops and firefighters have struggled to control the flames as they spread through heavily forested mountainous areas bordering Ofunato, which was among communities destroyed in the March 2011 earthquake and tsunami.