A brush fire burned about 80 acres Monday night in Nanakuli Valley.

The fire started about 5:20 p.m. above some homes on Mokiawe Street on the Waianae side of the valley, said Honolulu fire Capt. Terry Seelig.

While initially slow moving, the fire eventually burned up to the ridge, but didn’t cross over into the next valley. About 25 firefighters contained the fire by 8 p.m. and were expected to remain at the scene a little longer to mop up hot spots, Seelig said. Some red embers could still be seen in the dark, and firefighters will return if there are any flare-ups. No homes were threatened. The cause remained undetermined.

At the same time, firefighters also put out a small wild fire in a Makakilo gulch.

The fire burned about 400 square feet of brush in a hard-to-access area about 150 feet below some homes on Welo Street, Seelig said.

Firefighters contained the blaze within 20 minutes. The cause of the 7:45 p.m. fire remained unknown.

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