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Volcano Updates

The USGS Hawaiian Volcano Observatory issues Volcano Updates for Haleakalā as activity warrants.

Alert Level: NORMAL, Color Code: GREEN 2024-04-04 18:20:34 UTC

U.S. Geological Survey
Thursday, April 4, 2024, 8:20 AM HST (Thursday, April 4, 2024, 18:20 UTC)

20°42'29" N 156°15' W, Summit Elevation 10023 ft (3055 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

No significant activity was detected at Haleakalā volcano during the past month. HVO seismometers recorded no earthquakes in the vicinity of the volcano. The continuously recording Global Positioning System (GPS) instrument on Haleakalā was offline for all of February and remains offline but no changes are suspected.

Background: The most recent eruption on Haleakalā was probably between A.D. 1480 and 1600. Haleakalā Volcano is monitored by a continuous GPS instrument and seismometer located near the southwest edge of the summit crater. Key sites on Haleakalā are resurveyed using GPS receivers every few years to detect any changes in the volcano's shape.

More Information:
Haleakalā volcano summary also available by phone: (808) 967-8877
Haleakalā website:

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

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.


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Summary of volcanic hazards from eruptions:
Recent earthquakes in Hawaiʻi (map and list):
Explanation of Volcano Alert Levels and Aviation Color Codes: