Chris WoodyardUSA TODAY0:190:49https://imasdk.googleapis.com/js/core/bridge3.419.0_en.html#goog_720247585

LOS ANGELES — Tens of thousands of residents in California’s Orange County remained under evacuation orders Tuesday as two wildfires continued to threaten upscale neighborhoods.

As morningcame, the Silverado Fire had consumed 17square miles with only 5% containment, prompting an expansion of the evacuation orders to include sections of Mission Viejo, the Orange County Fire Authority reported.

About 70,000 Irvine residents were under evacuation order and another 6,000 in nearby Lake Forest.

To the east, the Blue Ridge Fire has burned about 23¾square miles with no containment as of Tuesday morning. Officials said more than 8,700 homes are under evacuation.

They include 5,958 in the Chino Hills, 2,500 in Yorba Linda and 276 in Brea. Ten Yorba Lindahomes weredamaged by the flames, butno structures had been reported lost in either of the two blazes.

About 1,000 firefighters were battling the Blue Ridge Fire and another…