Placer, Yuba and Nevada county residents should not worry if they see raging orange flames and plumes of smoke today as a prescribed burn that started at 10 a.m. continues through the evening.

The burn is occurring underneath the Middle Fork American River Canyon bridge, about a mile northeast of Auburn. The Lake Clementine Trail is also closed as part of the burn.

Smoke will be visible from Interstate 80, Highway 49, Auburn, Foresthill and the surrounding areas, according to Cal Fire.

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