A rekindled wildland fire that broke out at 6 a.m. Wednesday scorched at least 30 acres in the northernmost area of the Army’s Pohakuloa Training Area (PTA) on Hawaii island.

Winds reignited a fire that had been burning underground and had gone undetected with smoldering roots and stumps, and had been called extinguished last Thursday, said Eric Hamilton, PTA public affairs officer.

The PTA’s MEDEVAC helicopter and the Hawaii County Fire Department’s helicopter made water drops in the Keamuku Maneuver Area, which is divided from the rest of PTA by Saddle Road and is the the driest part of the training area, he said.

Bulldozers were used to create firebreaks around the perimeter.

The fire front was a half-mile long and two miles from Waikii Ranch, the nearest neighbor.

The fire does not pose a threat to any neighbors. No injuries were reported and no structures have been damaged.

Motorists are asked to be on alert as smoke can reduce visibility and to drive with care.

The affected area is about 1.2 miles from Mamalahoa Highway.

The cause of the Jan. 26 fire is still undetermined, Hamilton said.

Because of the area’s high fire risk, troops must stick to established roadways and paths, tactical vehicles are limited and civilian vehicles are prohibited.