The weather forecast for Tuesday includes a red flag warning, which means the warm and windy conditions could spark wildfires.
That isn't good news for crews that are already helping fight a fire near Spearfish. The Crow Peak fire, which has been burning since Saturday, has grown to 100 acres.
The area did see some rainfall Monday night, which helped bring down the intensity of the fire. Crews have contained about 25 percent of the fire with the help of 160 firefighters and two helicopters from the National Guard.