UPDATED: Gorgonio Fire Fully Contained, Mapped at 510 Acres

Update 7:11 p.m.:

The so-called Gorgonio fire was officially and fully contained Sunday evening, as soft rain fell over Riverside County, cooling temperatures, soothing winds and no doubt assisting in firefighting efforts.

Full control was expected by 6 p.m. Monday, a Cal Fire/Riverside County fire information officer said.

Highway 243 was open in both directions before 5 p.m. but motorists were urged to use caution and yield to fire equipment.

Update 3:13 p.m.:

The so-called Gorgonio Fire was 75 percent contained Sunday afternoon and Highway 243 had been reopened to motorists -- with CHP escorts only, officials said.

The morning after a fire erupted in the hills south of Banning, crews were still working at getting a handle on it.

As of 9:50 a.m. Sunday, Cal Fire reported that the total amount of acres burned remains estimated at 650.  As for containment, it was increased overnight to 30 percent.

[RELATED: Read Saturday's coverage of the firefight here]

For Sunday's firefighting efforts, 566 firefighters have been assigned to the Gorgonio Fire, as well as three helicopters, 37 engines, 18 crews, 44 overhead and eight watertenders, according to Melody Hendrickson of the Riverside County Fire Department.

Highway 243 between Banning and Poppet Flatts also remained closed as of Sunday morning, and there was still no estimate as to when it will reopen to the public, according to the California Highway Patrol.

No evacuations are necessary, Hendrickson added.