Kikai
Japan · Caldera · 30.79, 130.31 · volcano number 282060
Alert level yellow, as of 7 November 2026.
Issued by Japan Meteorological Agency.
What this system is
| Type | Caldera |
|---|---|
| Country | Japan |
| Position | 30.79, 130.31 |
| Largest known eruption | VEI 7, about -4350 |
| Why it is on this list | vei7 holocene |
What this rests on
The caldera is up to 19 km across and mostly submerged off southern Kyushu, and its eruption of about 4350 BCE is recorded at VEI 7.
That sentence is ours. A fuller account, with its own citations, is where to check it. It was a quotation from the Smithsonian Global Volcanism Program until September 2026, when their terms stopped being compatible with a site carrying advertising.
Who watches it
Japan Meteorological Agency monitors this system and publishes its alert level. https://www.jma.go.jp/bosai/map.html#contents=volcano
In an eruption, that observatory is the authority. This page follows it; it does not compete with it.
Other systems tracked
Where these numbers come from
National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Volcanic Eruptions Database. NOAA National Centers for Environmental Information. doi:10.7289/V5JW8BSH Licence: NOAA NCEI: access to this dataset is unrestricted (US federal work, public domain). Positions and eruption records come from that database; the sentence above is ours. Alert levels come from the publishing observatory.