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State
Alaska
United States of America · North America
Alaska is a state of the United States of America, in North America. It lies on the North American Plate. Records include 73 volcanoes, 9 major earthquakes since 1900 and 46 tsunamis observed on its coasts.
Tectonic Plates
Hazard Levels
Hazard level assessed by ThinkHazard! (World Bank, GFDRR), meaning the likelihood of a damaging event, from very low to high.
- Urban FloodHigh
- Coastal FloodHigh
- EarthquakeHigh
- LandslideHigh
- TsunamiHigh
- VolcanoHigh
- CycloneHigh
- WildfireHigh
- River FloodLow
- Extreme HeatLow
- Water ScarcityVery Low
Volcanoes (73)
- Great Sitkin Volcano 2026
- Atka Volcanic Complex 2025
- Semisopochnoi 2023
- Mount Kanaga 2023
- Mount Shishaldin 2023
- Mount Pavlof 2022
- Mount Veniaminof 2021
- Mount Cleveland 2020
- Mount Redoubt 2009
- Mount Okmok 2008
- Fourpeaked 2006
- Augustine Volcano 2006
- Mount Chiginagak 1998
- Mount Amukta 1996
- Makushin Volcano 1995
- Mount Seguam 1993
- Mount Akutan 1992
- Mount Westdahl 1992
- Mount Spurr 1992
- Kiska 1990
- Gareloi Volcano 1989
- Ukinrek maars 1977
- Trident Volcano 1974
- Mount Martin 1953
- Yunaska 1937
- Mount Aniakchak 1931
- Kagamil 1929
- Tanaga 1914
- Mount Katmai 1912
- Novarupta 1912
- Mount Wrangell 1912
- Mount Vsevidof 1878
- Mount Iliamna 1876
- Little Sitkin Volcano 1830
- Fisher 1830
- Mount Carlisle 1828
- Ugashik-Peulik 1814
- Amak Volcano 1796
- Snowy Mountain 1710
- Mount Takawangha 1550
- Hayes Volcano 1200
- Mount Churchill 847
- Imuruk Lake 300
- Mount Mageik 500 BCE
- Yantarni Volcano 800 BCE
- Buzzard Creek 1,050 BCE
- St. Paul Island 1,280 BCE
- Mount Moffett 1,600 BCE
- Mount Griggs 1,790 BCE
- Mount Dana 1,890 BCE
- Black Peak 1,900 BCE
- Edgecumbe 2,080 BCE
- Mount Kaguyak 3,850 BCE
- Mount Roundtop 7,600 BCE
- Buldir Volcano ?
- Herbert ?
- Tana ?
- Recheschnoi ?
- Frosty Volcano ?
- Dutton ?
- Emmons Lake Volcanic Center ?
- Pavlof Sister ?
- Mount Kupreanof ?
- Mount Kialagvik ?
- Alaska Peninsula Arc at 155.4°W ?
- Mount Denison ?
- Mount Steller ?
- Mount Kukak ?
- Mount Douglas ?
- Ingakslugwat Hills ?
- St. Michael ?
- Tlevak Strait-Suemez Island ?
- Stepovak Bay Group ?
Major Earthquakes Since 1900
- 20182018 Anchorage Earthquake · M 7.1
- 20022002 Denali Earthquake · M 7.9
- 19791979 Saint Elias Earthquake · M 7.5
- 19641964 Alaska Great Earthquake and Tsunami · M 9.2139 deaths
- 19581958 Lituya Bay Earthquake and Megatsunami · M 7.85 deaths
- 1927Se Alaska · M 7.1
- 1906Aleutian Islands · M 7.6
- 1904Rampart · M 8.3
- 1903Southwest · M 8.3
Tsunamis Observed on Its Coasts
- 2025Tracy Arm, Ak, United States of America · 481.0 m
- 2024Pedersen Lagoon, Ak, United States of America · 62.0 m
- 2023Sand Point, Ak, United States of America · 0.2 m1 deaths
- 2022Tonga Islands, Tonga · 22.0 m6 deaths
- 2015Taan Fjord, Ak, United States of America · 193.0 m
- 2014Northern Chile, Chile · 4.6 m7 deaths
- 2013Santa Cruz Islands, Solomon Islands · 11.0 m10 deaths
- 2012British Columbia, Canada · 13.0 m1 deaths
- 2007Solomon Islands · 12.1 m52 deaths
- 2007South Peru, Peru · 10.1 m596 deaths
- 2006South Kuril Islands, Russia · 21.9 m
- 2003Hokkaido Island, Japan · 4.4 m2 deaths
Famous Faults
Sources: Natural Earth · Smithsonian GVP · NOAA NCEI · IBTrACS · GEM · Bird (2003), PB2002