An evacuation order is in effect Tuesday for Otay Mountain-area neighborhoods as crews worked to contain the smoldering remnants of a wildfire that scorched about 10 square miles of remote terrain in the far southern reaches of the San Diego area over the last five days.

A wildfire in the hills near the U.S.-Mexico border exploded early Friday morning over thousands of acres, prompting evacuation orders throughout the Otay Wilderness Area and triggering school closures as well as likely power shutoffs for tens of thousands of people.