Crews battling a bushfire in Western Australia’s south-west have managed to get the upper hand overnight, with a warning for the Shire of Harvey downgraded to a watch and act after firefighters contained the blaze.

However, homes in the southern part of Uduc, including the town of Wokalup, are still under threat with extremely high temperatures and variable winds forecast today.

Department of Fire and Emergency Services incident controller Craig Waters urged residents to remain vigilant.

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“We’ve managed to track and fully contain the perimeter of the fire but we’re not out of the woods yet,” Mr Waters said.

“We have experienced low fire activity overnight but there are a couple of expected wind changes early in the morning.

“Keep up to date with all the relevant information as conditions may change in the near future and along with that the warnings may change if the fire hops out or gets a run somewhere.”

Mr Waters said crews would be tested today, with the temperature again forecast to reach 40 degrees Celsius.

“It’s about managing fatigue for our firefighters on the fire ground, giving them as many rest breaks as we can to try and make their job a little bit less painful I suppose,” he said.

About 20 people spent the night at an evacuation centre at Leschenault Leisure Centre on Leisure Drive in Australind, where a community meeting is scheduled for midday today.

A number of roads remain closed in the area, and about 7,000 homes are experiencing power disruptions in Dunsborough and Busselton after the fire burnt near a transmission line servicing the area.

About 150 firefighters are on the scene.

The bushfire is currently stationary, but DFES said conditions could change quickly.

Meanwhile, DFES has warned residents in parts of the Pilbara they face an extreme fire danger risk today, including those in Karratha and coastal areas of the Shire of Ashburton.