Officials were not sure what caused the fire at 5045 West Old Highway Road.
Fire officials say the neighbors noticed flames coming from the duplex at about 12:15 p.m. and called 911.
Officials say the neighbors tried to spray the home with garden hoses, but the flames grew too fast.
Many of the neighbors and witnesses could only watch the duplex go up in flames in a matter of minutes.
“When I arrived I walked out back the back deck was burning everything started from the rear," says Mark Miller, a UPS delivery man.
Within minutes, Miller backed off. The fire leaped into the house, creating an inferno.
“We ran over here to see if it was … it went so fast,” says Sue Kuns, a neighbor.
A witness says one volunteer firefighter arrived ahead of everyone else and quickly tried to extinguish the fire himself.
“It was incredible,” says Jimmy Ruiz, who was working on a roof in the neighborhood.
“He's tough one guy putting it out. Whoever he is he's tough. I give him credit. He was by himself trying to put it out.”
Neighbors say that the fire was burning for about twenty minutes before main fire crews showed up. In rural places like Morgan, they rely on volunteer firefighters.
Shortly thereafter, other fire departments from the area joined in. The duplex was barely standing by the time they arrived. It was too late.
Fortunately, no one was home when the fire started.
Neighbors say the homeowner was away.
“It doesn't look like the dog is going to make it,” said Dennis Hislop, a neighbor. “I'm sorry to say but obviously the fire crews are here and she lost everything.”
Neighbors say explosions from backyard propane tanks were heard and felt as the fire grew.
Crews from the Mountain Green Volunteer Fire Department and the Weber Fire Department showed about 15 minutes later.
Among the two families living in the duplex units, no one was injured, despite the unaccounted-for dog.
The cause of the fire was still under investigation.