Crews are working to put out a series of spot fires that broke out just off Interstate 15, near the border between San Diego County and Riverside County.
The spot fires stem from a brush fire in unincorporated Temecula County that broke out around 1:56 p.m. Monday.
Crews on scene found six to seven spots fires spread along the northbound shoulder of Intersatte 15 when they arrived on scene. Three of those fires spread 20 feet by 20 feet.
A Sig alert has been issued for I-15 northbound just south of State Route 79 in Riverside County. The number four lane will be closed for several hours as crews work.
Heavy traffic has been reported from SR-76 to SR-79.
Additional units are heading to the Temecula Creek Inn for structure protection. In NBC 7 San Diego viewer video, thick smoke and flames could be seen rising above the nearby gold course.
Cal Fire Riverside, Cal Fire San Diego and California Highway Patrol (CHP) officers are responding.
No other information was immediately available.
Check back for updates on this breaking news story.