UPDATE: 9 a.m.

A brush fire that broke out Wednesday in the Pohakuloa Training Area has spread to an area one mile from Highway 190 and three miles from Puuanahulu, according to the Hawaii County Civil Defense Agency.

There are no structures threatened at this time.

Motorists are advised to drive with caution in the areas of Highway 190 and Daniel K. Inouye Highway as fire crews establish fire breaks.

Meanwhile, the National Weather Service has extended the red flag warning through tonight for the Kohala, Kona and Kau districts.

A red flag warning means critical fire weather conditions are forecasted to occur. Strong, gusty tradewinds, dry fuel and low humidity could result in extreme fires that could rapidly spread.

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Fire personnel are fighting a “large” brush fire in the Pohakuloa Training Area.

The Hawaii County Civil Defense Agency reported the fire this evening that started earlier today and is currently moving northwest. No roads or residential areas are threatened.

Fire units from HPD, PTA, the State Forestry and the National Park Service are on the scene for fire suppression.

The agency is asking the public to drive with caution as heavy equipment and personnel around are around the Daniel K. Inouye Highway and Highway 190.