Hazard Notification System (HANS) for Volcanoes

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HAWAIIAN VOLCANO OBSERVATORY INFORMATION STATEMENT
U.S. Geological Survey
Friday, May 5, 2023, 9:51 PM HST (Saturday, May 6, 2023, 07:51 UTC)


HAWAIIAN VOLCANO OBSERVATORY INFORMATION STATEMENT

On Friday, May 5, at 4:26 p.m. HST, a magnitude-3.0 earthquake occurred 22 mi (35 km) east-northeast offshore of Waimānalo Beach, Island of Oʻahu, at a depth of 5 mi (9 km) below sea level. The earthquake was felt on the south and eastern parts of Oʻahu.  Reported shaking intensity on social media was weak to light (II-III on the Modified Mercalli scale) and no damage is expected.  

USGS National Earthquake Information Center Maps and Reports for this Event: https://earthquake.usgs.gov/earthquakes/eventpage/us6000k9z6/executive

The location suggests a source due to bending of the oceanic plate from the weight of the Hawaiian island chain, a common origin for earthquakes occuring away from the Island of Hawaiʻi . The event is not related to volcanic processes.

The Hawaiian Volcano Observatory continues to monitor Hawaiian volcanoes for any changes.

 

EARTHQUAKE DESCRIPTION 

  • Magnitude: 3.0
  • Date and time: May 5, 2023, 4:26 p.m. HST
  • Location: 23 mi (35 km) east-northeast of Waimānalo
  • Depth: 6 mi (9 km) below sea level
  • Aftershocks are possible, but not likely to be felt

EARTHQUAKE INTENSITY AND AFFECTED AREA

EARTHQUAKE MAPS AND ADDITIONAL INFORMATION

 



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



CONTACT INFORMATION:

askHVO@usgs.gov



Subscribe to these messages: https://volcanoes.usgs.gov/vns2/
Summary of volcanic hazards from eruptions: https://www.usgs.gov/observatories/hvo/hazards
Recent earthquakes in Hawaiʻi (map and list): https://www.usgs.gov/observatories/hvo
Explanation of Volcano Alert Levels and Aviation Color Codes: https://www.usgs.gov/programs/VHP/volcanic-alert-levels-characterize-conditions-us-volcanoes