As of Monday night, the fire was 15 percent contained, the Rocky Mountain Incident Management Team said.
"The indices our fire team uses to predict fire danger are at historic levels well before we can expect any significant moisture from the seasonal monsoons", said Richard Bustamante, SJNF forest fire staff officer.
Wildfires in Colorado spread Tuesday, triggering new evacuation orders and threatening a popular ski resort area.
"(If it were not for) that, two to three hundred homes would have been gone", White said of his neighborhood.
The San Juan National Forest makes up some 1.8 million acres across nine counties.
Sweetie Marbury, the mayor of nearby Durango - about 10 miles from the fire - said there are plenty of things people can do in the area, including river rafting, cycling and fishing and learning about history at places like Mesa Verde and Chimney Rock National Monument.
Violating Stage 3 fire restrictions or going into a closed area carries a mandatory appearance in federal court, and is punishable by a fine of up to $5,000 for an individual or $10,000 for an organization, or imprisonment of up to six months, or both.
A 32-mile (52-km) stretch of U.S. Highway 550, which has served as a buffer for homes on the eastern edge of the fire, was closed on Monday, officials said.
Gov. John Hickenlooper commended crews for their fast response.
"Our state agencies are here to support you".
Crews have been working around the clock battling the largest fire near Durango, Colorado.
That fire began June 1 and since then, more than 2,100 home have evacuated.
Assistant City Manager Amber Blake said another big reason the city is proposing to close its open space is because resources such as EMS personnel are tied up with the wildfires.
The closest ski resort to the fire, Keystone, is about 8 miles (12.8 kilometers) away and across a large reservoir.
A similarly sized fire a year ago took months to finish burning. Currently, there are 510 properties included in the evacuation area, with 393 homes. This year, almost 24,000 wildfires have burned more than 1.7 million acres across the country. As of Tuesday, there were no known structures that were burned or destroyed by the fire and no known injuries or fatalities.
A fire in California that burned nearly 200 acres has been contained, officials said.