Map: Thompson Fire perimeter and evacuation zone near Lake Oroville

The mandatory evacuation area for the Thompson Fire, near Lake Oroville, was greatly reduced on Thursday.

Except for zones within the perimeter of the fire, evacuation orders were downgraded to warnings. About 10 square miles on the lake’s west shore remained under the order, down from almost 50 square miles shortly after the fire started on Tuesday.

As of Friday morning, the fire had burned 3,789 acres (5.9 square miles) and was 29% contained, said the California Department of Forestry and Fire Protection.

The map above shows the approximate fire perimeter as a black line and the evacuation area in red. For more evacuation details, including the warning areas, see the Butte County emergency map or the CalFire/Butte County Facebook page.