Ruby, United States
Ruby is a submarine volcano in the United States, -174 m (-571 ft) high. Its last known eruption: 1900 to 1963. NOAA records no significant eruption here.
Ruby on the map
Ruby 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 15:48 UTC. USGS threat ranking: Low Threat.
Unassigned / Unassigned USGS, Northern Mariana Islands rates Ruby at alert level Unassigned, aviation color code Unassigned, since 2023-10-05 23:57 UTC.
NMI Ruby UNASSIGNED/UNASSIGNED - No new activity observed in geophysical or satellite data. Aviation Color Code and Volcano Alert Level were lowered back to UNASSIGNED.
The volcano
- Type
- Submarine volcano
- Elevation
- -174 m (-571 ft)
- Country
- United States
- Region
- Mariana Is-C Pacific
- Summit
- 15.605° N, 145.572° E
- Last known eruption
- 1900 to 1963
- Holocene activity known from
- Historical
- Smithsonian volcano number
- 284202
Significant eruptions
NOAA records eruptions that killed, did damage, were very large, or set off a tsunami or earthquake.
None on record.
Around it
The volcanoes within 300 km.
Earthquakes near RubyVolcanic 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.