The Glass incident was first reported just before 4:30 p.m.
There were initially reported to be four spot fires: at Diener Drive near the DNA Ridge Rock Quarry, at Manning Flat, at Highway 29 and Point Lakeview Road and at Kit’s Corner near the Clear Lake Riviera, based on radio reports.
Shortly after 6 p.m., radio reports indicated there was a fifth roadside spot in the area of Highway 29 and Bottle Rock Road that firefighters quickly extinguished.
Altogether, Cal Fire said there were seven fires; it was not clear where the other two were located.
There was both aggressive attack on the incident from the ground, with Cal Fire reporting that 15 engines, four water tenders, four hand crews, four dozers, and 172 firefighters were assigned.
In addition, air support on the fires included three helicopters and four air tankers, according to Cal Fire’s report.
As of 8 p.m., Cal Fire said the incident had reached 20 acres and was at 40 percent containment, with forward progress stopped on all of the fires.
Authorities closed Highway 29 from Manning Flat to Point Lakeview Road for several hours, with the road scheduled to be reopened in both directions at 9 p.m. Wednesday.
Motorists are asked to use caution when driving in the fire area as personnel and equipment may be present. Radio reports stated that crews were to remain on scene during the night.
Cal Fire said the incident’s cause remains under investigation.
Radio traffic indicated that Investigators were called to the scene of the fires on Wednesday afternoon to begin exploring their cause and origin.
Firefighters arriving at the scene on Wednesday afternoon said there were power lines in the area but none of them were down or causing a hazard.
Cooperating agencies included Cal Fire, Lake County Fire Protection District, Kelseyville Fire Protection District, South Lake County Fire Protection District, the California Highway Patrol and Pacific Gas and Electric Co.
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