DENVER (AP) — Authorities ordered more evacuations as fire crews struggled against powerful winds fueling a wildfire that has charred more than 87 square miles of forested mountains in northern Colorado.

The firefighting force has steadily increased and by Sunday night officials said about 1,750 personnel were working on the fire, which was sparked by lightning and was 45 percent contained.

The High Park Fire burning 15 miles west of Fort Collins has destroyed at least 181 homes. The figure represents the most in state history, surpassing the Fourmile Canyon wildfire that destroyed 169 homes near Boulder two years ago.