M4.1 earthquake SSE of Hōnaunau-Nāpōʻopoʻo on Hawaiʻi Island likely an aftershock from M6.0 in May

Scientists with the USGS Hawaiian Volcano Observatory say today’s (Aug. 17, 2026) magnitude-4.1 earthquake, located 10 miles south-southeast of Hōnaunau-Nāpōʻopoʻo on the Island of Hawaiʻi was likely an aftershock of the magnitude-6.0 that occurred on May 23, 2026.

Today’s quake was reported at 9:24 a.m. HST and occurred at a depth of 14 miles below sea level. The HVO reports the earthquake had no apparent impact on either Mauna Loa or Kīlauea volcanoes, and scientists continue to monitor the area for any changes.

No damage to buildings or infrastructure is expected based on earthquake intensity. The USGS “Did You Feel It?” webpage recorded 93 felt reports within the first hour, mostly across the west of Island of Hawaiʻi with a few reports from Maui and O‘ahu

The Hawaiian Volcano Observatory is one of five volcano observatories within the US Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawaiʻi and American Samoa.