VANCOUVER - A wildfire in the British Columbia Interior spread quickly on Tuesday, sparking an evacuation order.

The Martin Mountain blaze, near Pritchard, grew to 20 square kilometres, forcing about 120 residents from their homes.

Fire information officer Aminya Ennis says the fire's growth can be attributed to heavy winds.

Ennis says fire crews spent much of Tuesday setting up guards and dropping buckets of retardent from the air.

Crews have the blaze about 40 per cent contained and are welcoming a dip in temperature that is forecast for the coming days, though lightning strikes remain a concern.

B.C. has already seen more than 2,700 wildfires this season, about 1,000 more than average.