Authorities were alerted to the fire in a paddock at 8am.

Gusting winds soon had the fire racing across paddocks and placing a home under threat in Werribee Road.

Thanks to the fire fighters from several brigades this was averted.

However, the house came under threat again when the bull rushes in a nearby creek flared up, adding more heat to the fire which then jumped Werribee Road and again placed several houses, livestock and haystacks in danger of destruction.

The fire then spread along both sides of the Kep Track, crossing the Wooroloo boundary.

Fortunately the track was able to be traversed by the firefighting appliances which were able to gain rapid access to the fire.

Helitankers and fixed-wing water bombers were called in to assist the 130 firefighters and 80 appliances from the Bakers Hill, Inkpen, Clackline, Wundowie, Mundaring, Wooroloo, York, and Toodyay volunteer brigades which fought the fire until it was brought under control about 6pm.

The water bombers did a fantastic job and without them the fire would have spread very quickly, threatening Wooroloo.

Volunteers from various brigades manned the incident control vehicle for 48 hours non-stop.

Shire machinery was also put to use, creating large firebreaks and pushing down burning trees to stop the spread of fire and latent flare-ups.

Crews from various brigades monitored the fire ground overnight until 8am Tuesday.

The fire covered approximately 100 acres.

Prompt reporting by consumers of power cuts was of vital importance as it could have meant there was a fallen line.