On Saturday morning, cell phone video captured a man being knocked down by a large wave near popular Halona Blowhole. Witnesses say police arrived to advise people to leave the area.
Near Makapuu Beach, cars pulled off to the side of the road so people could gawk at the big waves. The large surf made for a good spectacle.
"It's absolutely unreal," said avid surfer Joshua Yoke, who decided to stay out of the water Saturday. "I can't really put it into words. I saw one guy drop in and I was like 'oh my god' it's like 10 feet out there, it's unreal."
Lifeguards were out on Jet Skis patrolling the area as a few brave souls took advantage of the big waves.
"With a hurricane, it causes more waves so it makes it more fun," said surfer Rich Pritts.
"It's really stormy and choppy," said another surfer, Eddie Tyler.
Meanwhile, in Kaaawa, the state Department of Transportation brought in truckloads of boulders as crews began emergency work along Kamehameha Highway to protect the integrity of the roadway. Traffic is being contraflowed through Monday.
"The coastline here is constantly getting eroded every time there's big swells, you lose a few more feet," Pritts said.
The area is notorious for crumbling roads. Back in February, high surf eroded the shoulder lane, breaking the asphalt and even the guardrail.