Alert Level: UNASSIGNED, Color Code: UNASSIGNED 2024-11-07 21:07:37 UTC
HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, November 7, 2024, 11:07 AM HST (Thursday, November 7, 2024, 21:07 UTC)
KAMA'EHUAKANALOA (VNUM #332000)
18°55'12" N 155°16'12" W, Summit Elevation -3199 ft (-975 m)
Current Volcano Alert Level: UNASSIGNED
Current Aviation Color Code: UNASSIGNED
Seismicity was elevated in the past month reflecting an earthquake swarm beginning on Nov. 1, 2024 at Kamaʻehuakanaloa volcano (formerly Lōʻihi Seamount). There have been 110 earthquakes since the start of this swarm with activity appearing to wane on Nov. 5, 2024; 48 earthquakes within the swarm were greater than magnitude 2 and 1 event was greater than magnitude 4. The largest earthquake to occur was a magnitude 4.3 at 12:05pm HST on Nov. 2, at a depth of 5.8 km (3.6 mi) below sea level. The source of this seismicity is likely related to magma migration beneath Kamaʻehuakanaloa.
Background: Intermittent earthquake activity has been recorded in the vicinity of Kamaʻehuakanaloa (formerly Lōʻihi) since as early as 1952. The most energetic earthquake sequence occurred in July–August 1996, which included more than 4,000 earthquakes, with nearly 300 events larger than M3.0 and 95 events in the M4.0 to 4.9 range. More recently, a swarm of 100 earthquakes occurred on May 11, 2020, with 18 events in the M3.0 to 3.9 range. There are no working monitoring instruments on Kamaʻehuakanaloa, whose peak is about 1,000 meters (3,280 feet) below sea level. All real-time information about the volcano is derived from land-based seismometers on the Island of Hawai‘i.
More Information:
Kamaʻehuakanaloa website: https://www.usgs.gov/volcanoes/kama'ehuakanaloa
Hawaiian Volcanoes at Elevated Alert Levels:
Kīlauea Volcano (YELLOW/ADVISORY) updates: https://www.usgs.gov/volcanoes/kilauea/volcano-updates
This notice contains volcanoes not displayed here: Mauna Loa (NORMAL/GREEN), Hualalai (NORMAL/GREEN), Haleakala (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN).
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
