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Alert Level: NORMAL, Color Code: GREEN
2022-07-07 16:50:04 UTC





HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, July 7, 2022, 6:50 AM HST (Thursday, July 7, 2022, 16:50 UTC)


HUALALAI (VNUM #332040)
19°41'31" N 155°52'12" W, Summit Elevation 8278 ft (2523 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

No significant activity was detected at Hualālai Volcano during the past month. HVO seismometers recorded 8 small-magnitude earthquakes (below M3.0) in the vicinity of the volcano. This earthquake count is on par with previous months.



Background: Hualālai is the third most active volcano on the Island of Hawaiʻi and typically erupts two to three times per 1,000 years. Hualālai last erupted in 1801 and, more recently, had a damaging seismic swarm in 1929 that was probably the result of a shallow intrusion of magma. Hualālai Volcano is monitored by a continuous GPS instrument and seismometer located southeast of the summit, as well as several instruments on nearby flanks of Mauna Loa and Mauna Kea. Key sites on Hualālai and western Mauna Loa are resurveyed using GPS receivers every few years to detect any changes in the volcano's shape.

More Information:
Hualālai volcano summary also available by phone: (808) 967-8877
Hualālai website: https://www.usgs.gov/volcanoes/hualalai




This notice contains volcanoes not displayed here: Haleakala (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN), Kama'ehuakanaloa (UNASSIGNED/UNASSIGNED).

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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



CONTACT INFORMATION:

askHVO@usgs.gov

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.



HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, June 2, 2022, 9:35 AM HST (Thursday, June 2, 2022, 19:35 UTC)


HUALALAI VOLCANO (VNUM #332040)
19°41'31" N 155°52'12" W, Summit Elevation 8278 ft (2523 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

No significant activity was detected at Hualālai Volcano during the past month. HVO seismometers recorded 4 small-magnitude earthquakes (below M3.0) in the vicinity of the volcano, in addition to the M4.7 earthquake recorded on May 21 about 2.0 km (1 mi) east-northeast of Kailua-Kona, at a depth of 11.0 km (7 mi) below sea level. This earthquake count is on par with previous months.

More details on the M4.7 earthquake are available in the HVO Information Statement issued for the event (https://volcanoes.usgs.gov/hans2/view/notice/DOI-USGS-HVO-2022-05-22T03:34:44-07:00) and at the National Earthquake Information Center webpage for the event (https://earthquake.usgs.gov/earthquakes/eventpage/hv73019747).



Background: Hualālai is the third most active volcano on the Island of Hawaiʻi and typically erupts two to three times per 1,000 years. Hualālai last erupted in 1801 and, more recently, had a damaging seismic swarm in 1929 that was probably the result of a shallow intrusion of magma. Hualālai Volcano is monitored by a continuous GPS instrument and seismometer located southeast of the summit, as well as several instruments on nearby flanks of Mauna Loa and Mauna Kea. Key sites on Hualālai and western Mauna Loa are resurveyed using GPS receivers every few years to detect any changes in the volcano's shape.

More Information:
Hualālai volcano summary also available by phone: (808) 967-8877
Hualālai website: https://www.usgs.gov/volcanoes/hualalai




This notice contains additional volcanoes not displayed: Haleakala (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN), Kama'ehuakanaloa (UNASSIGNED/UNASSIGNED).

----------
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



CONTACT INFORMATION:

askHVO@usgs.gov

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.