A tree burns in the ravine along Manzanita Lane near Broken Arrow in Reno. (Liz Margerum/AP)

According to the Reno Gazette Journal (which has a deeply reported live blog started at 1 a.m. Friday morning) reports the fire quickly spread thanks to a forceful wind that pushed burning embers miles past the fire line. Firefighters raced to alert people to evacuate their homes and struggled to contain the fire. At present, more than 4,900 homes are currently threatened and 10,000 people have evacuated.

Read more on the Reno fire here.

Emergency personnel respond to a wildfire in Reno, Nev. Friday. (Tim Dunn/AP)