![](https://cdn.cnn.com/cnnnext/dam/assets/220501140901-01-calf-canyon-fire-new-mexico-super-tease.jpg)
The fire, which started April 19 and then combined with the Hermits Peak fire, had burned almost 104,000 acres as of Sunday and was 30% contained, according to InciWeb.
Officials in northern New Mexico urged residents in more than two dozen communities to immediately evacuate Saturday ahead of the massive blaze, after it exploded in size within a day.
“This emerging situation remains extremely serious and refusal to evacuate could be a fatal decision,” officials said in the release.
Authorities in San Miguel and Mora County are asking residents within the fire area to “remain on high alert for changes to evacuation statuses and road closures,” the Sunday InciWeb report said.
Officials also warned of unhealthy air quality for sensitive groups in the Las Vegas, New Mexico, area as smoke drains into the valley, the report said.
According to the report, six scooper planes and eight helicopters will continue air operations to slow the rate of fire spread and aid firefighters on the ground.
Crews around Las Vegas are using bulldozers to create fire breaks and stall the fire from pushing any further, Santa Fe National Forest Public Information Officer Bill Morse said at a news briefing Sunday morning.