A wind-driven wildfire that broke out Wednesday southeast of Hemet scorched roughly 22 acres and consumed a structure before Cal Fire aircraft slowed it down, enabling crews to begin encircling the brusher.
The blaze was reported at 3:45 p.m. in the area of Cactus Valley and Sage roads, in an unincorporated community near Diamond Valley Lake, according to the Riverside County Fire Department.
One firefighter collapsed from heat stroke, and paramedics treated him at the scene before he was transported to a hospital for further evaluation.
Four Cal Fire air tankers and three water-dropping helicopters were the first to reach the blaze as it swept over rugged hills in the sparsely populated area.
An outbuilding was destroyed by the flames, which briefly threatened three to four other structures, officials said.
The firefighting aircraft established tentative containment lines, and shortly before 5 p.m., the fire’s forward rate of spread was stopped.
Sixteen engine crews and six hand crews — numbering about 135 personnel — were making steady progress encircling the brusher by 5 p.m., according to the fire department.
No evacuations were ordered, and no road closures were in effect.
The cause of the fire was under investigation.