LAGUNITAS — A wildfire that ignited Monday in Samuel P. Taylor State Park has burned about 115 acres and is 25 percent contained, authorities said Tuesday . Flames were first spotted Monday around 8:20 p.m. in steep terrain on Barnabe Peak, according to the Marin County Fire Department. The blaze, dubbed the Irving Fire, had grown to 115 acres by 9 a.m. Tuesday. Get breaking news and alerts with our free mobile app. Get it from the Apple app store or the Google Play store. Monday, authorities issued an evacuation order for Mountain King Road, Portola Avenue and Alamo Way to Barranca Road. Tuesday morning, the Marin County Fire Department said threats to homes still existed but were but decreasing. “Will re-evaluate evacuations by early afternoon” Tuesday, the Marin County Fire Department said on Twitter. Lagunitas School in San Geronimo was closed Tuesday. An evacuation order is in place for Mountain King Rd, Portola Ave and Alamo down to Barranca. Residents in that area should evacuate immediately to the Lagunitas School and wait for further information. Alamo Rd. will be closed until further notice. pic.twitter.com/0eqevGsb83 — Marin County Fire (@marincountyfire) September 11, 2018 Related Articles Letters: No foresight | Critical look | Ban assault weapons | Overstating footprint | Witch hunts Concerns grow about potential wildfires in East Bay Livermore: Flynn Fire extinguished in Altamont Pass Northern California winemakers embrace fire fighting in early wildfire season Editorial: Congress must act on California wildfire prevention funding In addition, all of Arroyo Road and Sir Francis Drake Boulevard between Nicasio Valley and Platform Bridge roads are closed. Smoke may be strong in the San Geronimo and Fairfax communities, according to the fire department. Check back for updates.<doc-sep>A vegetation fire was burning out of control at Samuel P. Taylor State Park in Marin County early Tuesday morning, consuming 100 acres across steep terrain and prompting officials to order evacuations. The fire started under the Mt. Barnabe fire lookout before 8 p.m. Monday and was threatening 20 to 30 structures, according to Marin County Fire officials.<doc-sep>Update: "Despite earlier plans to hold school, superintendent has closed Lagunitas School for the day. School campus is unharmed, but many staff and students are evacuated and are unable report to work," according to Marin County Fire. All of Arroyo Road in Forest Knolls was closed to traffic Tuesday morning as a vegetation fire burned at Samuel P. Taylor State Park in Marin County.<doc-sep>Crime & Safety Fire Burns 152 Acres, Forces Evacuations In Marin County The 152-acre blaze, called the Irving Fire, broke out under Mount Barnabe Lookout in the area of Samuel P. Taylor State Park. Reply MARIN COUNTY, CA – A wildfire sparked Monday night in Marin County, scorching dozens of acres and prompting evacuations in the area. The blaze, called the Irving Fire, broke out around 7 p.m. Monday under Mount Barnabe Lookout in the area of Samuel P. Taylor State Park, according to the Marin County Fire Department. By Tuesday evening, the fire had scorched 152 acres and was 45 percent contained. Fire officials said an earlier estimate on Tuesday of 115 acres was adjusted because of GPS mapping data later in the day. Also see: Downed Power Line Sparked Irving Fire In Marin County: Officials It was challenging for firefighters to contain the blaze because of the steep terrain, county spokeswoman Laine Hendricks said. Firefighters used a combination of bulldozers, hand crews, water tenders and engines in the firefight. "It's kind of treacherous terrain," Hendricks said. Hendricks said people were concerned about the fire because the blaze created a lot of smoke, especially in the San Geronimo and Fairfax communities. Authorities issued an evacuation order for residents on Mountain King Road, Portola Avenue and Alamo Way to Barranca Road. An evacuation warning was also issued for residents in the upper part of Forest Knolls and Lagunitas. Residents were evacuated to Lagunitas School at 1 Lagunitas School Road in San Geronimo. Classes at the school were canceled Tuesday. The campus remained safe, officials said, but many staff and students were evacuated and unable to attend school. By 8:30 p.m. Tuesday, all evacuation orders and warnings were lifted.<doc-sep>
Satellite showing possible new fire start in Marin County. Near Hwy 1 and Sir Francis Drake Blvd. Dark purple is possible heat signature. #cawx pic.twitter.com/4Rb2x6Skwz — NWS Bay Area (@NWSBayArea) September 11, 2018 An evacuation order is in place for Mountain King Rd, Portola Ave and Alamo down to Barranca. Residents in that area should evacuate immediately to the Lagunitas School and wait for further information. Alamo Rd. will be closed until further notice. pic.twitter.com/0eqevGsb83 — Marin County Fire (@marincountyfire) September 11, 2018 Reminder: monitor local news media outlets and follow any further instructions if given by Marin County Fire or Marin County Sheriff. Smoke may be strong in surrounding communities. The Fire Public Information Hotline has been updated: 415-473-7191 pic.twitter.com/0DoIAEBp1E — Marin County Fire (@marincountyfire) September 11, 2018 #IrvingFire Update: Fire at 100 acres, 10% containment. Fire crews are dealing with very steep terrain, but beginning to build momentum on containment. Using a combination of bulldozers, hand crews, water tenders and engines in the firefight. #WestMarin pic.twitter.com/CYhy5m7kII — Marin County Fire (@marincountyfire) September 11, 2018 LAGUNITAS, Calif. (KGO) -- A 100-acre wildfire burning in a park in Marin County Monday night prompted evacuation orders, according to fire officials.The fire is burning in the Samuel P. Taylor State Park in an area difficult for firefighters to access. It was first reported around 8 p.m. At least 20 to 30 structures are being threatened and the fire was 10 percent contained as of midnight.Evacuated residents were advised to go to the Lagunitas School and await further instructions.Smoke in the San Geronimo and Fairfax communities could be strong due to the fire.Find the latest evacuation information from the Marin County Fire Department Some road closures are also in effect, and a public information hotline has been set up for residents to call.