A 6.9 magnitude earthquake occurred on May 4 that the United States Geological Survey said were related to the eruptions . The earthquake was the strongest to hit the state since 1975 . On May 6 , Hawaiʻi County Civil Defense reported that 26 houses had been destroyed by lava or fires in Leilani Estates . Lava fountains up to were observed in the subdivision . The lava vents formed a northeast/southwest line ; officials were concerned about potential damage to a water main in the area
6.9 magnitude earthquake
2018 Hawaii earthquake
2018 lower Puna eruption