A Mylar balloon collided with a power pole in National City, causing a small explosion and reportedly cutting off power to some in the area.
The incident happened at approximately 3:58 p.m. Tuesday on the 3400 block of Plaza Boulevard in National City, fire officials said. The location is near the Sweetwater River, just east of Interstate 5.
The balloon drifted into a power pole in the area of E 8th Street and Plaza Boulevard, according to the National City Fire Department.
The collision created a "potential electric issue". There have been no reports of injuries or property damage, though some have reported losing power.
At the same time, an unplanned outage was reported nearby by SDG&E officials. Sixty three customers were out of power.
No other information was available.