More than 90 firefighters are now battling a one- to two-acre brush fire burning in Harbor Regional Park in Harbor City.
The blaze was called in at 4:16 p.m. and is northeast of Anaheim Street and Vermont Avenue, across the street from the ConocoPhillips Refinery. No structures are threatened.
It is moving east through medium brush toward the Harbor College campus, said Los Angeles Fire Department Spokesman Erik Scott.
"The humidity is helping us to some extent," Scott said, adding that an "aggressive attack" from water-dropping helicopters was aiding the effort.
Firefighers are hoping the blaze dies out as it moves toward heavier brush that burned previously, Scott said.
Los Angeles County Fire is assisting, according to a city fire post on Twitter.

I live in wilmington and the smoke is very intense over here! The smoke is moving east and we can see that the smoke is heading towards long beach. I had to close all my windows and doors because of the smell.
We are in Long Beach and it is raining ash. The smell if also pretty strong.
I live in Harbor City, and you can see the smoke very well, we seen at least 3 water-dropping helicopters.
Thanks to all the firemen for all their hardwork, God bless you all.
That area is so heavily populated with transients that I would worry about someone being burnt. Am I alone in thinking there must be 50-100 people living in and around Harbor park? Fires and trash are a given in that situation.