Lō‘ihi Seamount

Lō‘ihi - Volcano Updates

Alert Level: UNASSIGNED, Color Code: UNASSIGNED 2020-08-06 19:12:04

U.S. Geological Survey
Thursday, August 6, 2020, 9:12 AM HST (Thursday, August 6, 2020, 19:12 UTC)

18°55'12" N 155°16'12" W, Summit Elevation -3199 ft (-975 m)
Current Volcano Alert Level: UNASSIGNED
Current Aviation Color Code: UNASSIGNED

Following the May 11th earthquake swarm on Lō‘ihi Seamount, earthquake activity has decreased and returned to average long-term earthquake rates, with no earthquakes detected in the vicinity of the seamount.

Background: Intermittent earthquake activity has been recorded in the vicinity of Lō‘ihi since as early as 1952. The most energetic earthquake sequence occurred in July-August 1996, which included more than 4,000 earthquakes, 95 of which were magnitude-4.0 to 4.9 events and nearly 300 were larger than magnitude 3 events. There are no working monitoring instruments on Lō‘ihi Volcano whose peak is about 1,000 m (3,280 ft) below sea level. All real-time information about the volcano is derived from land-based seismometers on the Island of Hawai‘i.

This notice contains additional volcanoes not displayed: Kilauea (NORMAL/GREEN), Hualalai (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN), Haleakala (NORMAL/GREEN).


Activity summary for Mauna Loa is also available by phone: (808) 967-8866

Subscribe to these messages: https://volcanoes.usgs.gov/vns2/

Webcam images: https://volcanoes.usgs.gov/volcanoes/mauna_loa/multimedia_webcams.html

Photos/video: https://volcanoes.usgs.gov/volcanoes/mauna_loa/multimedia_chronology.html

FAQs of Mauna Loa: https://volcanoes.usgs.gov/observatories/hvo/faq_maunaloa.html

Summary of volcanic hazards from eruptions: https://volcanoes.usgs.gov/observatories/hvo/hawaii_hazards.html

Recent earthquakes in Hawaiʻi (map and list): https://volcanoes.usgs.gov/volcanoes/mauna_loa/monitoring_summary.html

Explanation of Volcano Alert Levels and Aviation Color Codes: https://volcanoes.usgs.gov/vhp/about_alerts.html



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.