UPDATE (3:30 p.m.) - CAL FIRE SLO says the fire burned 2.2 acres.
Fire crews will remain on scene for about another hour putting out small hot spots.
The cause is still under investigation.
UPDATE (1:25 p.m.) - Forward progress of the vegetation fire has stopped, CAL FIRE SLO tweeted.
UPDATE (12:55 p.m.) - The fire at the Oceano Dunes has burned about 4-5 acres and is at 60 percent containment, according to a tweet from CAL FIRE SLO.
Crews at the scene are making "good progress" on the fire.
UPDATE (12:15 p.m.) - CAL FIRE SLO says the fire continues to spread slowly, according to a tweet. There are sufficient resources to fight the fire on scene.
It is not yet known what caused the fire.
ORIGINAL STORY (12:02 p.m.) - CAL FIRE SLO and San Luis Obispo County Fire Department crews are responding to reports of a vegetation fire at Oceano Dunes at the Grand Avenue entrance at about 12 noon Sunday.
According to a tweet from CAL FIRE SLO, the vegetation fire is currently at one-quarter of an acre. The fire is reportedly spreading slowly.
Five Cities Fire Authority are helping crews on scene.
The fire was initially reported shortly before 12 noon.
#DunesIC (update) Battalion 4618 at scene. 1/4 acre island of vegetation surrounded by sand burning with slow rate of spread. Five Cities Fire Authority with Automatic Aid assist.— CAL FIRE SLO (@CALFIRE_SLO) October 20, 2019
This is a developing story. Please check back later for more updates.