LOS ANGELES (KTLA) – Firefighters quickly extinguished a brush fire that erupted along the 405 Freeway in Los Angeles’ San Fernando Valley on Monday.

The fire was reported at about 4 p.m. on a hillside next to the northbound lanes of the freeway in Granada Hills.

Sky5 footage showed flames and heavy smoke billowing over the road as fire crews arrived on the scene and began digging containment lines.

Preliminary reports suggested the blaze was not threatening structures, though firefighters were reportedly worried about embers spreading downrange. Fortunately, Memorial Park Cemetery on the other side of the fire acted as a natural fire break.

Northbound lanes were blocked for around 45 minutes as fire crews battled the fire and eventually brought it under control after it burned three acres, authorities said.

The cause remains under investigation.

The blaze broke out during yet another Santa Ana wind event in the L.A. area, which prompted the National Weather Service to issue a “particularly dangerous situation” alert, indicating a high fire danger.