A sign of smoke near the Sonoma Coast Tuesday afternoon caught the eye of the fire lookout on Pole Mountain, launching planes, a helicopter and firefighters to a grass and timber fire north of Jenner.
The wildland fire was reported at about 2 p.m. off of Muniz Ranch Road.
Cal Fire officials sent off a full attack response from the air and ground while county fire officials sent Monte Rio, Jenner, Fort Ross, Timber Cove and Cazadero firefighters.
The fire initially was reported as a small grass fire starting to burn timber in the hilly, remote area, officials said.
Four aircraft were sent, including two air tankers.
Tuesday was meeting its expectations of being the hottest day of the summer so far, with temperatures over 100 degrees in Santa Rosa and other Bay Area and North Bay areas.
This fire was first seen by a woman fire spotter working on Pole Mountain, a 2,200 high lookout site between Jenner and Cazadero, reported Cal Fire.