A SMOKE alert is in place for suburbs west of Gnangara Pine Plantation in the City of Wanneroo.
The Parks and Wildlife Service at the Department of Biodiversity, Conservation and Attractions issued the alert for Mariginiup, Tapping, Ashby, Sinagra, Wanneroo, Jandabup, Gnangara and surrounding roads.
The smoke is the result of a prescribed burn in the pine plantation. The smoke is expected to clear by tomorrow morning.
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If the smoke is particularly thick, it is recommended people shut doors and windows and turn off air-conditioners.
Smoke may reduce visibility on some roads and motorists should take care, turn on headlights and travel at appropriate speeds.
People with asthma and pre-existing respiratory or cardiovascular illnesses should follow their pre-prepared treatment plan.
People with conditions exacerbated by smoke should take precautions in line with their medical advice for these circumstances.
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Visit www.emergency.wa.gov.au