Washington, Dhu-AlQa'dah 09, 1435, September 04, 2014, SPA -- Firefighters battling a fast-moving northern California wildfire said Wednesday they expect a second day of extreme conditions, as heat and high winds fuel a lightning-sparked blaze near the Oregon border. The Happy Camp Fire has been burning in the Klamath National Forest since August 11, consuming 29,000 hectares and costing an estimated $41 million so far in firefighting costs. “Yesterday, we had an increase in extreme fire behavior …, and we do expect the same extreme fire today,” said U.S. Forest Service fire spokesman Paul Gibbs. The wildfire had slowed under cooler weather due to a temperature inversion over the weekend, but flipped into extreme conditions on Tuesday as clouds cleared and winds strengthened, Gibbs said. More than 2,700 personnel from 77 fire crews have helped to battle the wildfire, originally a complex of 17 fires, Gibbs said. Eight firefighters have been injured so far, but no buildings have been damaged. The fire was 15 percent contained on Wednesday morning, and full containment was not expected for at least two more weeks, Gibbs said. --SPA 12:14 LOCAL TIME 09:14 GMT www.spa.gov.sa/w