A magnitude 6.0 earthquake struck the western flank of Mauna Loa on Hawaii island Friday night but did not generate a tsunami, officials said.

Axar.az reports, citing The Honolulu Star-Advertiser, the quake struck at 9:46 p.m. (local time) and was centered about 7 miles south of Honaunau-Napoopoo and 22 miles south-southeast of Kailua-Kona, at a depth of 14 miles, according to the U.S. Geological Survey. It was initially listed as a magnitude 5.9 but later upgraded by USGS to 6.0.

The Hawaii Police Department advised drivers to avoid Napoopoo Road due to large rocks and debris that fell as a result of the quake. Police closed both lanes between the 10-mile marker and Middle Keei Road so crews could clear the road.

The Pacific Tsunami Warning Center said the quake did not generate a tsunami but that some areas may have felt strong shaking.

“The earthquake had no apparent impact on either Mauna Loa or Kilauea volcanoes,” USGS scientists said in a statement.