07/29/2013 08:29 EDT | Updated 09/28/2013 05:12 EDT

Okanagan Falls Wildfire Prompts Evacuation Alert (VIDEO)

OKANAGAN FALLS, B.C. - Calmer winds overnight have helped crews make good progress in the fight against a wildfire burning five kilometres southwest of Okanagan Falls, B.C.

The Wildfire Management Branch says the blaze is now 70 per cent contained.

UPDATE: The Okanagan Falls wildfire is now 100 per cent contained, News1130 reported.

Since it was reported Sunday afternoon, the fire has scorched an estimated 70 hectares, or just under three-quarters of a square kilometre of grassland, sage brush and open timber, about 20 kilometres south of Penticton.

Twelve properties in the area remain on evacuation alert issued just before 6 p.m. Sunday as gusty winds fanned the fire.

Fire information officer Melissa Welsh says the blaze is much less aggressive and a total of 42 firefighters supported by three helicopters are working to complete guards around the perimeter.

Welsh says a cause remains under investigation but humans likely sparked the flames.

Also on HuffPost

Peachland Fire 2012