Mauna Kea - Volcano Updates

Alert Level: NORMAL, Color Code: GREEN 2020-10-01 19:54:23

U.S. Geological Survey
Thursday, October 1, 2020, 9:54 AM HST (Thursday, October 1, 2020, 19:54 UTC)

19°49'12" N 155°28'12" W, Summit Elevation 13796 ft (4205 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

No significant activity was detected at Mauna Kea Volcano over the past month. There were 11 small magnitude earthquakes detected beneath the summit and flanks of the volcano, similar to average long-term earthquake rates. The single, continuously recording Global Positioning System (GPS) receiver atop Mauna Kea (operated by NASA’s Jet Propulsion Laboratory) recorded no significant changes in deformation

Background: Mauna Kea was last active about 4,600 years ago. Monitoring is conducted using three seismometers and one GPS receiver on the volcano plus instruments on adjacent Kohala volcano and denser seismic and geodetic networks on the north flank of Mauna Loa to the south.

This notice contains additional volcanoes not displayed: Kilauea (NORMAL/GREEN), Hualalai (NORMAL/GREEN), Haleakala (NORMAL/GREEN), Loihi Seamount (UNASSIGNED/UNASSIGNED).


Kilauea Activity summary also available by phone: (808) 967-8862

Other Hawaiian volcanoes summary also available by phone: (808) 967-8877

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Haleakala Summary:

Hualalai Summary:

Loihi Summary:

Mauna Kea Summary:

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Summary of volcanic hazards from Kīlauea eruptions:

Recent earthquakes in Hawaiʻi (map and list):

Explanation of Volcano Alert Levels and Aviation Color Codes:


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.