Alert Level: NORMAL, Color Code: GREEN 2026-10-01 21:30:20 UTC
HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, October 1, 2026, 11:30 AM HST (Thursday, October 1, 2026, 21:30 UTC)
HALEAKALA (VNUM #332060)
20°42'29" N 156°15' W, Summit Elevation 10023 ft (3055 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Summary: No activity of concern for Haleakalā.No significant activity was detected at Haleakalā volcano during the past month. The continuously recording Global Positioning System (GPS) instrument on Haleakalā had a data outage between July 13 and September 17. No significant deformation was recorded before or after the outage. The station is owned and operated by researchers at the Pacific GPS Facility (PGF), as part of the Hawaii Institute of Geophysics and Planetology (HIGP).
Background: The most recent eruption on Haleakalā was probably between A.D. 1480 and 1600. The 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. *Note: Today, Thursday October 1, 2026, is the last day that Haleakalā update phone messages will be recorded.
Haleakalā website: https://www.usgs.gov/volcanoes/haleakala
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.
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
