This isn't good!

Brad Pitt and Angelina Jolie's longtime vacation home in Santa Barbara is in danger after a wildfire broke out in the ritzy beach town yesterday around 3:30pm.

It began in Los Padres National Forest but has now spread over 1,100 acres, and mandatory evacuations are underway for Refugio Canyon, Venadito Canyon, Las Flores Canyon, El Capitan Canyon, El Capitan Ranch and El Capitan and Refugio state beaches. The blaze forced Highway 101 to close in both directions, and as of today it has yet to be contained.

Their 11.5 acre property is just 1.5 miles from El Capitan State Beach, and as you can see from our exclusive pix of the power couple's pad, their residence is surrounded by heavy foliage which could easily ignite if the fire travels further.

Coincidentally, we caught the father-of-six jetting out of LAX yesterday at the same time as the inferno began. The Hollywood hunk must not have known that his abode was going to be in danger of burning down just 24 hours later. We have a feeling he's going to have to turn right around!