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Aniakchak: eruption history
Elevation1,341 m
TypeCaldera
Confirmed eruptions16#19 of 165 in country
Latest eruption1931-05-01
Largest VEI6
Location56.88, -158.17
Eruptions per century (since 1500)
1
0
0
0
1
0
By VEI
1
2
2
Eruptions (latest first, up to 60)
| Start | VEI | End | Area |
|---|---|---|---|
| 1931-05-01 | 4 | 1931 | West and SW caldera floor |
| 1540 | 4 | – | NW & S caldera floor (Half Cone, Vent Mtn) |
| 1470 | – | – | SE caldera floor (New Cone) |
| 1370 | – | – | NW caldera floor (Half Cone) |
| 1280 | – | – | NW caldera floor (Half Cone) |
| 1190 | – | – | NW caldera floor (Half Cone) |
| 1120 | – | – | East-central caldera (Surprise Cone) |
| 1050 | – | – | Vent Mtn and other vents? |
| 700 | 0 | – | S & NW caldera floor (Vent Mtn & Half Cone) |
| 460 | – | – | |
| 200 | – | – | Northern & western caldera floor |
| 370 BCE | – | – | |
| 1645 BCE | 6 | – | |
| 2550 BCE | – | – | |
| 5930 BCE | – | – | |
| 6300 BCE | 6 | – |
Nearby volcanoes
| Volcano | Distance | Eruptions |
|---|---|---|
| Black Peak | 52 km | 1 |
| Yantarni | 62 km | 1 |
| Chiginagak | 77 km | 2 |
| Kialagvik | 93 km | 0 |
| Veniaminof | 108 km | 24 |
| Kupreanof | 139 km | 0 |
| Ukinrek Maars | 145 km | 2 |
| Ugashik-Peulik | 145 km | 4 |
Eruption records from the Smithsonian Global Volcanism Program; older eruptions may be missing. VEI = Volcanic Explosivity Index (0–8). For current alerts, check the official agency.