Volcanoes
Currently elevated volcanoes, most severe alert level first. Sort, search and filter below.
Data as of 2026-10-30 15:33 UTC · Source: USGS Hazard Notification System (HANS)
US-monitored volcanoes only. USGS HANS covers volcanoes monitored by US observatories, so this page does not show volcanoes or eruptions elsewhere in the world.
Want the picture rather than the table? See the map and overview of volcanoes at elevated alert, or compare volcanoes side by side.
For a very different timescale, read what the evidence shows about the Lake Toba supereruption.
Summary
- Elevated volcanoes
- 4
- ORANGE · WATCH
- 1
- YELLOW · ADVISORY
- 3
- Observatories
- 3
- Latest notice
- 2026-10-29 23:23 UTC
Elevated volcanoes
Showing 4 of 4 elevated volcanoes, sorted by alert, most severe first.
| Observatory | Source | |||
|---|---|---|---|---|
| AlertORANGEWATCH |  Great Sitkin | Latest notice2026-10-29 19:39 UTC | ObservatoryAlaska Volcano Observatory | View notice (Great Sitkin, ORANGE WATCH, opens in new tab) → |
| AlertYELLOWADVISORY | Ahyi Seamount | Latest notice2026-10-29 23:23 UTC | ObservatoryNorthern Mariana Islands | View notice (Ahyi Seamount, YELLOW ADVISORY, opens in new tab) → |
| AlertYELLOWADVISORY | Kilauea | Latest notice2026-10-29 19:05 UTC | ObservatoryHawaiian Volcano Observatory | View notice (Kilauea, YELLOW ADVISORY, opens in new tab) → |
| AlertYELLOWADVISORY | Shishaldin | Latest notice2026-10-29 19:39 UTC | ObservatoryAlaska Volcano Observatory | View notice (Shishaldin, YELLOW ADVISORY, opens in new tab) → |
What the alert levels mean
USGS pairs a colour code (for aviation) with a ground-based alert level. This page lists only volcanoes above normal; an elevated level is not the same as an eruption in progress.
- REDWARNING
- A hazardous eruption is imminent, underway or suspected.
- ORANGEWATCH
- Unrest is heightening or escalating and an eruption is possible, or an eruption is underway with limited hazards.
- YELLOWADVISORY
- Unrest is above the volcano’s known background level. It does not mean an eruption is imminent.
- GREENNORMAL
- Typical background activity. Not listed here unless USGS reports it as elevated.
Summarised from USGS volcano alert-level definitions; the notice linked on each row is the authoritative statement for that volcano. USGS alert levels (opens in new tab)