It sure is. The PCT through the area is closed. Here's a
link to a San Jacinto hiking message board. Similar to this one. There's a big thread on the fire.
Found this listing of trail closures:
The Pacific Crest Trail is closed from Highway 74 north to Saddle Junction. All of the trails connection to the Pacific Crest Trail are closed as well, including South Ridge Trail, Carumba Trail, Spitler Peak Trail, Fobes Trail and Cedar Springs. Hurkey Creek County Camground, and all of the hiking and mountain biking trails out of Hurkey creek and May Valley are closed
