News Release U.S. Department of the Interior U.S. Geological Survey | ||||||||
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Magnitude-4.0 earthquake at summit of Mauna Loa
The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.0 earthquake beneath the Island of Hawaiʻi on Tuesday, September 6, 2016, at 4:25 a.m., HST.
According HVO, the earthquake
occurred underneath Moku‘āweoweo, Mauna Loa’s summit caldera, at a depth of 1.2 km (0.74
mi). A map showing its location is posted on the HVO website at
http://hvo.wr.usgs.gov/
The USGS "Did you feel
it?" Web site (http://earthquake.usgs.gov/
The earthquake this morning appears to be isolated. As of 6:30 a.m., HST, no aftershocks have been observed. HVO’s deformation monitoring instruments registered the earthquake but show no significant change in deformation rates or patterns that would indicate increased volcanic hazard at this time.
Magnitude-4 or greater earthquakes occurred in the summit of Mauna Loa six to seven months prior to the volcano’s two most recent eruptions in 1975 and 1984. However, today’s isolated earthquake does not represent a significant departure from the seismic activity rate for the past year, so the Volcano Alert Level for Mauna Loa will remain at Advisory.
According to HVO’s
Scientist-in-Charge, Christina Neal, the earthquake had no apparent effect on
Kīlauea Volcano's ongoing eruptions. The Pacific Tsunami Warning Center
determined that no damaging tsunami was generated
(http://ptwc.weather.gov/?
For information on recent earthquakes in Hawaii and eruption updates, visit the USGS Hawaiian Volcano Observatory website at http://hvo.wr.usgs.gov.
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Daily updates about Kīlauea's 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 hvo.wr.usgs.gov.
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