Categorized | Earthquake, News, Sci-Tech, Volcano

A light 4.2M quake shakes Hawaii Island Saturday (April 27)


magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST

magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST

The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST.

The earthquake was located about 20 km (12 mi) southeast of Volcano on the Island of HawaiÊ»i at a depth of 6 km (~4 mi). This earthquake is part of the continuing adjustments beneath the south flank of KÄ«lauea following the magnitude-6.9 earthquake that occurred on May 4, 2018. 

Twenty seconds before the magnitude-4.2 earthquake, a magnitude-1.6 quake occurred deep beneath KÄ«lauea Volcano’s Southwest Rift Zone, causing some initial confusion about the larger earthquake’s location. 

A map showing the location of both earthquakes is posted on HVO’s website at More details about the magnitude-4.2 earthquake are available at the National Earthquake Information Center website at

Weak to light shaking, with a maximum Intensity of IV on the Mercalli Intensity Scale, has been reported primarily in East HawaiÊ»i, with a few reports from West HawaiÊ»i. The USGS “Did you feel it?” service ( received over 100 felt reports within an hour of the magnitude-4.2 earthquake. 

The earthquakes have caused no detectable changes in activity at either KÄ«lauea or Mauna Loa volcanoes. 

According to the Pacific Tsunami Warning Center (PTWC) no tsunami was generated by the earthquake.

For more information on recent earthquakes in Hawai‘i and eruption updates, visit the Hawaiian Volcano Observatory website at


Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website at

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