Here’s a concise update on the 2018 Hawaii earthquake.
- Core event: On May 4, 2018, a magnitude 6.9 earthquake occurred on the south flank of Kīlauea, Hawaii Island. It was the largest Hawaii quake since 1975 and was linked to the ongoing volcanic activity in the region. It did not generate a tsunami per the Pacific Tsunami Warning Center.[1][2]
- Context: The quake followed a period of intense seismic and volcanic activity around Kīlauea, including lava intrusions and the Hilina Slump movement associated with the eruption sequence in spring 2018.[2]
- Aftermath and significance: The event marked a major milestone in Hawaii’s 2018 eruption sequence, with subsequent aftershocks and continued seismic activity for months, though the most intense activity centered around the immediate eruption area.[5]
If you’d like, I can pull a few authoritative sources and summarize how this earthquake fit into the broader 2018 Kīlauea eruption timeline, or create a quick timeline visualization.
Sources
On May 4, 2018, a powerful magnitude-6.9 earthquake on the south flank of Kīlauea Volcano shook the Island of Hawai‘i. It was the largest quake in Hawaii in 43 years. Today, more than five months later, smaller-magnitude earthquakes in the same area are still occurring.
www.usgs.govThe U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-6.9 earthquake on Friday, May 4, 2018, at approximately 12:32 p.m. HST. It is the strongest quake in Hawaii since 1975—and the largest in a series of strong earthquakes that began at 11:32 a.m. today. According to the Pacific Tsunami Warning Center (PTWC) no tsunami was generated by today’s earthquakes.
www.usgs.govActivity climbed to 40 events per hour with up to five earthquakes per hour that were greater than magnitude-3 overnight Thursday into Friday
www.cbsnews.comFind the latest and strongest earthquakes near Hawaii, updated every few minutes. So far in 2026, 803 major nearby earthquakes detected...
earthquakelist.orgThe U.S. Geological Survey reports a 4.6-magnitude earthquake has struck Hawaii's Big Island.
phys.org