The Jasper Fire broke out just before 9:30 a.m. Wednesday near Las Virgenes Road and Mulholland Highway in the Calabasas area of Los Angeles County, sending thick black smoke into the sky and drawing a quick response from firefighters who moved in to attack the flames.

By 10:02 AM PDT on May 27, 2026, the Los Angeles County Fire Department said the brush fire had burned 5 acres. Aerial footage showed clouds of thick black smoke rising over the area as crews worked to extinguish the blaze.

The fire remained a developing situation on Wednesday morning, with the initial spread limited to a relatively small footprint but the smoke and speed of the response underscoring how quickly brush fires can build in the hills west of Los Angeles.

What matters now is whether firefighters can keep the Jasper Fire from pushing beyond the 5-acre mark and hold it before the wind, terrain or dry vegetation gives it room to grow.