A 225-acre wildfire in southern Clay County is 80 percent contained Tuesday night after quickly growing from just five acres over the course of the day, emergency management officials say.

Florida Forest Service crews will continue to monitor the blaze overnight, and go back out in the morning to mop up hot spots, says forest service spokesperson Annaleasa Winter on Twitter.

The blaze was reported in the area of Decoy Road and County Road 209 South, and residents on Varney and Woodard roads nearby were told to be cautious during the day.

At one point the fire was estimated to be about 400 acres - but that estimate was too high due to the amount of smoke, Winter says.

Winter says herbicide commonly used by landowners growing pine trees added to the fire's rapid growth.
Investigators are expected to look into whether sparks from a train in the area may have caused the fire.

Smoke plume across the St. Johns River in Clay County. (Photo: Submitted)