UPDATE (3:35 P.M.) - CAL FIRE officials said the Whale Fire is now 100 acres.
UPDATE (1:10 P.M.) - Evacuation warnings have been issued for residents Cottontail Creek Rd. and Old Creek Rd.
Officials with the San Luis Obispo County Sheriff's Office are encouraging residents to be prepared to evacuate if conditions worsen in the area.
The fire, dubbed the Whale Fire, has burned 80 acres so far, according to CAL FIRE SLO.
Fire Alert: Fire near Whale Rock Reservoir. Structures threatened. Evacuation warnings for residents in Cottontail Creek Road and Old Creek Road. This means be prepared to evacuate if conditions persist. pic.twitter.com/La3BiGeAOO— SLO County Sheriff (@SLOSheriff) August 15, 2020
Structures are threaten as the fire burns near Whale Rock Reservoir, according to sheriff's deputies.
ORGINAL STORY (12:22 P.M.) - CAL FIRE SLO crews said a vegetation fire broke out Saturday morning in Cayucos, prompting road closures.
Authorities said the fire was initially reported along the 2500 block of Old Creek Road shortly before 11 a.m.
As of 12:25 p.m., officials closed Old Creek Road at Highway 46 and Old Creek Road at Santa Rita Road.
Lightning may have been the cause of the brush fire, according to the California Highway Patrol Traffic Incident Information page.
CAL FIRE SLO did not immediately respond to calls from KSBY News.