The fire started near Hysham, Montana on July 9, 2021.

[1] The MY Complex Fire was first reported on July 9, 2021 at around 10:45 a.m. MDT near Hysham, Montana.

[1] It burned out an area of 4,400 acres (1,800 ha) by July 12.

[2] The cause of the fire is believed to be due to lightning.

[1] As of July 12, 2021, the fire is 0% percent contained.