A number of vehicles are burning on a man-made island in Nishinomiya city, Hyogo Prefecture, possibly due to the effects of Typhoon Jebi.
Police were notified of the blaze at a used car lot shortly before 3 PM on Tuesday.
Details of the fire were not immediately available.
Video taken by an NHK helicopter shows flames and black smoke rising from cars parked at the site.
Firefighters were positioned on the coast, and boats were seen spraying water from the sea.