Mauna Loa, United States
Mauna Loa is a shield volcano in the United States, 4,170 m (13,681 ft) high. Its last known eruption: 1964 or later. NOAA records 3 significant eruptions here, which killed 77 people where the toll is counted.
Mauna Loa on the map
Mauna Loa and the volcanoes within 300 km, colored by when each last erupted.
- Since 1964
- 1900 to 1963
- 1800s
- AD 1 to 1799
- Before AD 1, or undated
Now
From the USGS Volcano Hazards Program, read 15:32 UTC. USGS threat ranking: Very High Threat.
Normal / Green Hawaiian Volcano Observatory rates Mauna Loa at alert level Normal, aviation color code Green, since 2026-09-03 18:41 UTC.
HVO Mauna Loa GREEN/NORMAL - Mauna Loa earthquake counts increased in August, while the summit region showed no other signs of deformation.
The volcano
- Type
- Shield volcano
- Elevation
- 4,170 m (13,681 ft)
- Country
- United States
- Region
- Hawaiian Is
- Summit
- 19.475° N, 155.608° W
- Last known eruption
- 1964 or later
- Holocene activity known from
- Historical
- Smithsonian volcano number
- 332020
Significant eruptions
3 on record, newest first.
Around it
The volcanoes within 300 km.
Earthquakes near Mauna LoaVolcanic ash advisories on the live map
Sources
Volcanoes and significant eruptions from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. Alert levels, color codes and notices from the USGS Volcano Hazards Program and its observatories, public domain. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s.