Firefighters are battling a blaze near State Route 78 and San Felipe Road, officials confirmed.
The fire began just after noon in the Banner Grade are, south of SR-78 and southeast of Julian on Sunday.
Multiple agencies are assisting in tackling the fire. As of right now, no structures are threatened. Cal Fire officials said the "General Fire" -- as they're calling it -- had scorched 850 acres as of 9 a.m. on Monday. It is about 20 percent contained.
Residents near the site of the fire reported seeing and smelling smoke going south on S2 around 2:10 p.m. Sunday.
The National Weather Service (NWS) in San Diego issued a wind advisory that went into effect at 3 p.m. Sunday across San Diego County deserts. The advisory remained in place through 3 a.m. Monday.
There are reports that officials from the Bureau of Land Management have detained two individuals near Banner Grade, and are questioning them about the fire.
Check back for updates on this developing story.