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USGS Volcano Notice - DOI-USGS-HVO-2025-09-19T06:31:01+00:00

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HAWAIIAN VOLCANO OBSERVATORY INFORMATION STATEMENT
U.S. Geological Survey
Thursday, September 18, 2025, 8:45 PM HST (Friday, September 19, 2025, 06:45 UTC)


HAWAIIAN VOLCANO OBSERVATORY INFORMATION STATEMENT 

On Thursday, September 18, 7:52 p.m. HST, a magnitude-4.1 earthquake occurred 2 mi (3 km) southwest of Pāhala on the Island of Hawaiʻi at a depth of 19 mi (31 km) below sea level. The earthquake had no apparent impact on the active eruption or on either Mauna Loa or Kīlauea volcanoes. 

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

EARTHQUAKE DESCRIPTION 

  • Magnitude: 4.1 
  • Date and Time: September 18, 2025, at 7:52 p.m. HST 
  • Location: 2 mi (3 km) SW of Pāhala 
  • Depth: 19 mi (31 km) below sea level 
  • Aftershocks are possible in the coming days to weeks 

EARTHQUAKE INTENSITY AND AFFECTED AREA 

  • Potential Damage: No damage to buildings or infrastructure expected based on earthquake intensity 
  • Maximum Intensity, Modified Mercalli Scale (https://www.usgs.gov/natural-hazards/earthquake-hazards/science/modified-mercalli-intensity-scale) 
  • Community-reported: IV - light shaking 
  • Instrument-derived: IV - light shaking 
  • Felt Reports: More than 130 within the first hour (http://earthquake.usgs.gov/dyfi/) 
  • Felt Area: Multiple areas across the Island of Hawaiʻi  
  • Visit NOAA’s Tsunami Warning Center website for updated information: https://www.tsunami.gov/ 

EARTHQUAKE MAPS AND ADDITIONAL INFORMATION 

  • USGS National Earthquake Information Center Maps and Reports for this Event: https://earthquake.usgs.gov/earthquakes/eventpage/hv74779207 
  • USGS-HVO Interactive Earthquake Map of Hawaiʻi: https://www.usgs.gov/observatories/hawaiian-volcano-observatory/earthquakes 

 



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