Update, 6:10 p.m.
The Poly Fire has spread to 105 acres and is 90 percent contained, according to Cal Fire.
The spot fire that broke out Wednesday afternoon added 1 to 3 acres to the main fire.
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Firefighters were able to raise the containment of the fire on Cal Poly’s campus to 60 percent overnight, Cal Fire said Wednesday morning.
As of 7 a.m. Wednesday, the fire was holding at approximately 97 acres, according to Cal Fire.
The area behind the Sierra Madre and Yosemite dorms is “still an active fire scene,” Cal Poly tweeted Wednesday morning. The university urged people to stay away from that area.
And a spot fire flared up just outside of the fireline at about 2:30 p.m. The fire, which began just outside the fireline but within the Cal Poly fire’s retardant lines, burned about 3 acres and was contained just before 4 p.m., according to Cal Fire spokesman Chris Elms. That fire was later “tied into” the Cal Poly fire.
The fast-moving brush fire broke out Tuesday afternoon near the Cal Poly P, forcing temporary evacuations for students and nearby residents as the fire stretched across the hillside below the landmark.
By 8 p.m. Tuesday, all evacuations had been lifted and all roads closed due to the fire had reopened.