UPDATE 12:50 p.m.
The National Tsunami Warning Center cancelled the tsunami advisory for the California coastline at 12:19 p.m.
UPDATE 11 a.m.
The San Luis Obispo County Office of Emergency Services confirmed that no damage has been reported and local police and fire departments have received no calls for service Thursday morning.
In addition, Cal Fire crews continued patrolling the coastline late Thursday morning and had not found anything of concern, said Emergency Services manager Ron Alsop.
Alsop said the tsunami warning remained in effect as of 11 a.m. and the National Tsunami Warning Center will likely wait until Thursday afternoon to lift it due to continuing wave surges.
As of an 8 a.m. conference call between county agencies and the California Geological Survey Thursday, the highest reported tsunami action in San Luis Obispo County was a surge of about 7.5 inches, he said.
A facilities manager at Port San Luis said a few boats sailed out of the harbor as precautionary measures, but were not required to do so.
The largest surge in the tsunami advisory area, between southern Orange County to Ragged Point in southern Monterey County, was at the Ventura Harbor, with a reported surge of 13 inches.
UPDATE 9:30 a.m.
No damage or other issues were reported in Morro Bay after a small tsunami hit the San Luis Obispo County coastline Thursday morning.
There were visible surges, but nothing extreme, according to Becka Kelly, harbor patrol supervisor in Morro Bay. About a dozen commercial fishing boats went offshore to avoid damages with the docks, but had returned as of 9:30 a.m.
The Harbor Patrol would continue to monitor the bay, Kelly added.
A small tsunami hit the San Luis Obispo County coastline just after 5 a.m., according to the county
A tsunami advisory was issued from Ragged Point in northern San Luis Obispo County to San Onofre State Beach in north San Diego County after a powerful magnitude 8.3 earthquake hit off the coast of Chile on Wednesday night.
The preliminary tsunami height was around 6 inches at Port San Luis, according to John Lindsey, meteorologist at Diablo Canyon nuclear power plant.
No damage had been reported in Morro Bay as of 7 a.m., according to the Morro Bay Harbor Department.
However, officials warn that a tsunami is a series of waves that can continue for hours, not just a single surge.
While the tsuanmi was not expected to cause any damage on land, strong currents or waves dangerous to people in or very near the water are expected and could remain a hazard for many hours after the tsunami arrival, according to the advisory. Currents may be hazardous to swimmers, boaters and coastal structures. The first wave of the tsunami may not be the largest, the advisory notes.
The National Tsunami Warning Center recommends staying off the beach and out of harbors and marinas, although widespread inundation on the land is not expected. The public should be alert to instructions from local emergency officials, the advisory said.
The earthquake was centered just offshore about 150 miles north of Santiago, Chile at 7:54 p.m. Wednesday — 3:54 p.m. in California.