Firefighters scouted the drought-stricken mountainsides around a New Mexico village as they looked for opportunities to slow a wind-driven wildfire that a day earlier had burned at least 150 homes and other structures while displacing thousands of residents and forcing the evacuation of two schools.

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Homes were among the structures that had burned, but officials on Wednesday did not have a count of how many were destroyed in the blaze that torched at least 6.4 square miles (16.6 square kilometres) of forest, brush and grass on the east side of the community of Ruidoso, said Laura Rabon, spokesperson for the Lincoln National Forest.

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Rabon announced emergency evacuations of a more densely populated area during a briefing Wednesday afternoon as the fire jumped a road where crews were trying to hold the line. She told people to get in their cars and go.

New Mexico State Police released a statement late Wednesday saying two people have been found dead in a residence. Their identities will not be released until the Office of the Medical Examiner can positively identify them.

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Strong winds forced a suspension of the aerial attack on the flames and kept authorities from getting a better estimate of how large the fire had grown. But some planes returned to the air as winds subsided late in the day, and seven air tankers and two helicopters have now been assigned to the fire, Forest Service officials said Wednesday evening.

While the cause of the blaze was under investigation, fire officials and forecasters warned Wednesday that persistent dry and windy conditions had prompted red flag warnings for a wide swath that included almost all of New Mexico, half of Texas and parts of Colorado and the Midwest.

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Five new large fires were reported Tuesday, and nearly 1,600 wildland firefighters and support personnel were assigned to large fires in the southwestern, southern and Rocky Mountain areas, according to the National Interagency Fire Centre.

Hotter and drier weather coupled with decades of fire suppression have contributed to an increase in the number of acres burned by wildfires, fire scientists say. And the problem is exacerbated by a more than 20-year Western megadrought that studies link to human-caused climate change. The fire season has become year-round given changing conditions that include earlier snowmelt and rain coming later in the fall.