Johns Creek -- Firefighters say lightning sparked two separate house fires Wednesday in Johns Creek and Lilburn, leaving residents scrambling to escape the fast-moving flames.
In Johns Creek, residents say they heard a thunderous boom and when they outside moments later to check for potential damage the roof was already on fire.
Firefighters arrived a few minutes later but say there was little they could except prevent the fire from spreading to neighboring homes.
"This was an incredibly fast-moving fire," Johns Creek Fire Marshal Chad McGiboney said.
Gwinnett firefighters responded to a report of a house on fire after it was struck by lightning Wednesday evening.
Crews found smoke coming from the roof of a two-story house on arrival. The occupants, two adults and one child, were all out safe by the time the crews had arrived.
Firefighters entered the home and extinguished the small fire burning in the attic. The blaze was confined to the attic with only residual damage to the second floor. Firefighters worked to clear the smoke and protect contents inside the structure.
The occupants were in the home at the time of the lightning strike. They reported a bright flash and loud popping sound during a brief thunderstorm. Moments later they were alerted to the fire by a neighbor who saw smoke from the attic.
According to reports, it appeared the lightning hit the roof and sparked a fire in the attic.
There were no injuries reported.