The Bureau of Meteorology is predicting extremely hot and dry conditions going into next week, which only fuelled the unpredictability of a fire threat.
Bureau spokesman Neil Bennett said easterly winds would usually last a day or two due to the presence of a high-pressure system moving through the Bight.
However, this time the high was particularly slow-moving, resulting in easterly winds lasting longer.
“When you have the easterlies, the other factor that comes into play is the fact that the air is very, very dry, so that combination, low humidity, high temperature and strong winds, are the worst that you can get for any fires that are ongoing,” he said.
“They are very difficult to contain.”
Residents in Regans Ford, Red Gully, Cowalla, Moore River National Park, Nilgen, Mimegarra, Karakin, Yathroo, Orange Springs, Lancelin and Ledge Point, including Ocean Farms and Seaview Park, have been issued an emergency warning they are in danger and need to act immediately to survive.
A watch and act alert is also in place for parts of Wedge Island, Mimegarra, Nilgen and Cooljarloo while residents in parts of Lancelin, Nilgen Karakin and Ledge Point are under an advice alert.
The bushfire, which started near the intersection of Mogumber Road an Brand Highway in Red Gully, which is out of control and unpredictable, is moving fast in a westerly direction at three kilometres per hour, according to DFES.
Burning embers are likely to be blown around, starting spot fires up to 200 metres ahead of the fire, and there is a lot of ash and dust blowing over the fire ground.
People within the emergency area are advised it is too late to evacuate horses and large animals or to handle animal movements outside.
An evacuation centre has been set up at Guilderton Country Club on Wedge Street, Guilderton, which will be open from 5.30pm Monday.
“If you cannot leave, you need to get ready to shelter in your home,” DFES advised.
“Go to a room in your home away from the fire front and make sure you can easily escape.
“Choose a room with two exits and water such as a kitchen or laundry.”
People in an area bounded by Brand Highway, Nammegarra Road, Mimegarra Road, Dingo Road, Nilgen Road, Indian Ocean Drive, KW Road, Sappers Road, Orange Springs Road and Nabaroo Road are in the path of the fire.
Residents within the watch and act area are urged to take animals to stay with a friend or family member or to a private boarding or agistment arrangement. They are advised to move livestock through paddocks with a low fuel load and ensure the animals have feed and drinking water for several days of high to extreme temperatures.
A number of roads have been closed including Indian Ocean Drive from K.W Road to Wedge Island Road, K.W Road (East of Indian Ocean Drive), Nilgen Road (East of Indian Ocean Drive) and Minegarra Road from Meadows Road to Sappers Road.
Strong easterly winds, hot temperatures set to continue
The Bureau of Meteorology is also predicting extremely hot and dry conditions going into next week, which are expected to fuel the unpredictability of a fire threat.
Wind speeds of more than 30kmph are expected on Tuesday morning at a top of 35 degrees, 37 degrees on Wednesday, 38 degrees on Thursday and 40 degrees on Friday.
DFES Deputy Commissioner Craig Waters said climate change had caused fires to burn with the same intensity into the evenings, whereas before firefighters would get a lull or reprieve with cooling conditions.
“Whenever you come into a period of hot weather and gusty easterly winds in you’re in for a world of hurt,” Mr Waters said.
He said DFES was expecting this fire season to be the same as last year’s Yanchep fires, with active fires burning into the night