Harbison Fire
The fire in unincorporated El Cajon sent a large plume of black smoke into the sky. Photo via @CALFIRESANDIEGO Twitter

A midday fire engulfed an outbuilding and more than a half-dozen parked vehicles Wednesday in a rural neighborhood just north of Sycuan Casino, authorities reported.

The non-injury blaze near the intersection of Harbison Canyon Road and Los Caballos Lane in Harbison Canyon erupted shortly before 12:30 p.m., according to Cal Fire.

It took crews a little more than an hour to extinguish the flames, which gutted the structure, charred about eight vehicles and blackened roughly a half-acre of grassy open property, said Thomas Shoots, a fire captain with the state agency.

Though the blaze broke out amid unseasonable warmth and dry Santa Ana winds, ground personnel were able to get it under control without help from firefighting aircraft, Shoots said.

The cause of the fire was under investigation.

City News Service contributed to this article.