LAS VEGAS, N.M. -- After a few days of calm that allowed some families who had fled wildfires raging in northeast New Mexico to return to their homes, dangerous winds picked up again Sunday, threatening to spread spot fires and complicate work for firefighters.
More than 1,500 firefighters were on the fire lines at the biggest blaze east and northeast of Santa Fe, which grew another eight square miles (20 square kilometres) overnight to an area more than twice as large as the city of Philadelphia.
A red-flag warning was in effect Sunday, kicking off what fire officials predicted would be another "historic, multi-day wind event that could result in extreme fire behaviour."
A few helicopters were able to gather new information from the air on the spread of the flames early Sunday "but they won't be up there very long because of the winds out there," fire spokesman Tom Abel said.
"The wind is incredible. It is precedent setting, the amount of wind we are going to have and the duration we are going to have it," he said at a morning briefing.
"They are predicting the wind to blow all day today, through the night, all day tomorrow so that is a long time for our fire," he said.
Thousands of residents have evacuated due to flames that have charred large swaths of the Sangre de Cristo Mountains in northeastern New Mexico -- a total of 275 square miles (712 square kilometres).
The good news, Abel said, is additional fire crews continue to arrive from around the West.
For many California firefighters backing up local units, the winds in New Mexico are puzzling. Unlike the sustained Santa Ana winds in southern California, the air around the Hermit's Peak/Calf Canyon fires in New Mexico have swirled around and been redirected in complex and changing interactions with the mountains.
"We'll see what happens," said fire battalion chief Ryan Lewis, of Ontario, California, on a rare break with his firefighters at a local hotel that's serving hot meals to fire workers and evacuees.
The worst of the thick wildfire smoke had blown out of some areas on Saturday, allowing residents of rural Las Vegas, New Mexico, to recapture a sense of normalcy Saturday as their rural neighbours hunkered down amid predictions of extreme fire conditions.
Shops and restaurants reopened, the historic center was no longer just populated by firefighters, but there was a widely felt sense of anxiety, loss, and wariness of what lay ahead.
"It's literally like living under a dark cloud," said Liz Birmingham, whose daughter had persistent headaches from the smoke. "It's unnerving."
Nationwide, close to 2,000 square miles (5,180 square kilometres) have burned so far this year, with 2018 being the last time this much fire had been reported at this point, according to the National Interagency Fire Center. And predictions for the rest of the spring do not bode well for the West, where long-term drought and warmer temperatures brought on by climate change have combined to worsen the threat of wildfire.
The New Mexico fire's main threat was now to the north, where flames burning vegetation clogging the forest floor threatened several small rural communities, fire spokesman Ryan Berlin said.
The threat to Las Vegas, a city of 13,000, was reduced after vegetation was cleared to create containment lines. Local officials on Saturday allowed residents of several areas on the city's northwestern outskirts to return to their homes, Berlin said.
The city looked like a ghost town earlier in the week, with businesses shuttered, schools closed and the tourist district empty but for resting firefighters. By Saturday, it was in a partial state of recovery.
National Guard troops carried cases of water, people lined up to sign up for relief from the Federal Emergency Management Agency and the state's Democratic U.S. Sen. Martin Heinrich met with local officials and toured the shelter housing some of the displaced.
"We don't know if our houses are getting burned, or if it's gonna stop," said Domingo Martinez, an evacuee from rural Manuelitas northwest of Las Vegas. "I hope it dies down so we can go home."
Martinez, who is staying with his son on the east side of town, visited an old friend and neighbour who had been living in the middle school shelter for 15 days.
Outside the school, Martinez got a free haircut from Jessica Aragon, a local hairdresser who volunteered her time.
"I love that everyone is coming together," Aragon said. "I think a smile is worth a thousand words."
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Melley reported from Los Angeles. Associated Press writers Susan Montoya Bryan, Felicia Fonseca in Flagstaff, Arizona, and Paul Davenport and Michelle A. Monroe in Phoenix contributed to this report.
