US fire crews have reported progress in their efforts to tackle a large wildfire menacing the city of Reno, Nevada,saying the blaze is about a quarter contained, according to BBC. The Hawk Fire, which began on Saturday, had spread over 15,000 acres by Monday, firefighters said.

Evacuation Orders Remain in Place for 23,000 People

Evacuation orders remain in place for 23,000 people, though other residents have now been allowed to return to their homes; Tens of thousands of other residents have been told to be ready to leave at any moment. Officials are concerned that gusts of wind could drive the flames towards more homes; Unfavourable weather conditions are forecast for the next two days, meaning the fire could continue to burn during that timeframe.

Seven People Injured, 32 Homes Destroyed

No deaths have been reported, though seven people have been injured. The fire, which was first reported on Saturday morning, spread in the foothills of the Sierra Nevada mountains near Reno due to those same windy and unpredictable weather conditions. Chief Richard Edwards, of the Truckee Meadows Fire Protection District, said those injured were four civilians and three firefighters, who suffered minor burns.

Edwards added that 32 homes had been destroyed and six damaged, and that those numbers were expected to increase, as Shelters have been set up in the area to take in displaced residents. While firefighters have made progress, more than two-thirds of the fire’s perimeter remains uncontained.

Fire Likely Caused by Humans, Climate Change Factors

The fire is thought to have been caused by humans, while Edwards added on Monday that investigators did not yet know if the blaze was set intentionally. Scientists say that human-induced climate change makes the warm, dry conditions more likely that assist the rapid spread of wildfires.

Reno’s average temperature has gone up by over 4C since the 1970s, faster than any other big US city, according to Climate Central. Nevada’s Governor Joe Lombardo earlier declared a state of emergency in surrounding Washoe County, and ordered the National Guard to join firefighting and law enforcement efforts.

“This is an active and rapidly evolving situation and I urge everyone in the affected areas to remain vigilant and follow the direction of local officials,” he said on Saturday. Firefighters from Australia and New Zealand have so far taken part in the containment effort—as well as crews from 15 US states.