FORT PIERCE, Fla. -- The wildfire that burned 200 acres of land in the northern part of Fort Pierce was caused by a strike of lightning, according to investigators with the Florida Forest Service.
Investigators said they determined a thunderstorm moved in on Friday and by looking at a lightning map, found a negative lightning strike hit a tree in the woods of the St. Luice County Airport. The Florida Forest service said the fire went unnoticed until Sunday afternoon.
On Tuesday, the fire remained 90 percent contained.
Forest service crews and firefighters with the St. Lucie County Fire Department were out again on Tuesday mopping up hot spots and knocking down dead trees that posed as a risk.
Firefighters said the concern on Tuesday was the forecast of wind and low moisture. Crews predict the weather will cause more flame activity especially near the hottest part of Tuesday.
New lightning strikes are also a worry for crews trying to completely contain the wildfire.
The fire index on Tuesday is "extreme" along the Treasure Coast according to the Florida Forest Service.
Bulldozers as well as firefighters will continue to secure lines around homes in the impacted areas.
The Florida Forest Service will also have a fixed wing pilot flying in the air to look for new ignitions.