An evacuation order remained in effect Monday 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 fast-moving wildfire erupted several miles north of the U.S.-Mexico border in the San Diego area, blackening thousands of open acres as ground and airborne crews worked Friday to quell the flames amid arid and blustery Santa Ana conditions.

The evacuation area for the Border 2 fire stretches east to state Route 94 and west to Lower Otay Lake, warnings issued for southwest side of lake.