(AP) — Residents of 1,000 homes in Colorado Springs are being ordered to evacuate because of a wildfire that’s already destroyed at least 360 houses.

Thursday’s evacuation order is the first within the city limits. About 38,000 people were previously told to leave because of the fire that started in a populated, wooded area east of the city.

Colorado’s second-largest city of about 430,000 people is also asking residents of 2,000 more homes to be ready to evacuate because the fire has reached a designated trigger point.

The blaze in the Black Forest area is now the most destructive in Colorado history.