ESCONDIDO, Calif. (KGTV) -- Fire crews Monday stopped the forward rate of spread of a brush fire in the San Pasqual Valley.
The blaze, dubbed the Cloverdale Fire, burned 100 acres and is, as of 7 p.m. Monday, 15 percent contained.
The fire broke out on the 21000 block of San Pasqual Road around 3 p.m. near Hungry Hawk Vineyards.
Arson investigators determined that the fire was intentionally set, the San Diego Fire-Rescue Department announced in an Instagram post Monday night.
A San Diego firefighter suffered a minor injury and was treated at the scene.
The Cloverdale Fire in the San Pasqual Valley started a few minutes before 3 p.m. today. @calfiresandiego @poway_firefighters @sdsheriff @sandiegopd @theescondidofirefighters all worked together and the Fire currently (7 p.m.) stands at 100 acres and 15% containment. The forward rate of spread has been stopped. One firefighter suffered a minor injury and was treated at the scene. The SD Fire-Rescue metro arson strike team investigators determined that today’s fire was deliberately set. #sandiego #sdfd #cloverdalefire #brushfire #firefighters #calfire #teamwork #strongwork @joinsdfd
INTERACTIVE MAP: Third fire in two weeks breaks out on San Pasqual Valley Rd.
Evacuation warnings were issued for part of San Pasqual Road, Rockwood Road and Brillwood Hill Road. The San Pasqual High School opened for those who evacuated.
All lanes of SR-78 east of Safari Park and Cloverdale Road also had to be shut down due to the blaze.
The San Diego Zoo Safari Park, which is located roughly five minutes away from where the fire started, evacuated guests Monday afternoon due to the closure of SR-78. The park was also prepared to evacuate animals, but did not have to do so.
San Diego Safari Park closed early because of #CloverdaleFire . Zoo made the call so hundreds of people could get to their cars and out of the area before firefighters closed Highway 78. No evacuation preps for animals at this point @10News pic.twitter.com/oI2dIpPQQA
— Anthony Pura (@10NewsPura) August 14, 2018
In an evening update, the Safari Park announced that it would be open as usual to guests on Tuesday. Highway 78 is expected to be open in both directions by early morning.
Watch video of the fire in the player below:
The National Weather Service tweeted out a photo of the blaze when it first started as seen from the NWS office.
WEATHER: Today's forecast
— NWS San Diego (@NWSSanDiego) August 13, 2018
The SDG&E aircrane was also dispatched to the blaze to help firefighters battle the Cloverdale Fire. Along with the aircrane, three helicopters and two fixed-wing aircraft were sent to fight the fire.
Our Aircrane was just dispatched to help firefighters extinguish a fast-moving fire burning near San Pasqual Road at State Route 78 in North County. Stay alert! pic.twitter.com/bqn1nohXbi
— SDG&E (@SDGE) August 13, 2018