Home › Decades

Eruptions starting in the 1940s

Eruptions241

Volcanoes113

Largest VEI4

By country

Indonesia55

Japan37

Russia23

United States17

Chile14

Papua New Guinea12

New Zealand12

Nicaragua12

Ecuador8

France8

Italy5

Costa Rica4

Nearby decades

1890s218

1900s269

1910s239

1920s280

1930s283

1940s ◀241

1950s357

1960s341

1970s311

1980s318

1990s318

Start	Volcano	Country	VEI
1940-01-16	Zhupanovsky	Russia	2
1940-02-04	Rabaul	Papua New Guinea	1
1940-02-16	Tolbachik	Russia	2
1940-03-01	Karangetang	Indonesia	2
1940-03-15	Slamet	Indonesia	2
1940-04-07	Kusatsu-Shiranesan	Japan	1
1940-04-07	Mauna Loa	United States	0
1940-04-16	Ruapehu	New Zealand	2
1940-04-20	Asosan	Japan	2
1940-04-24	Aira	Japan	2
1940-04-25	Tengger Caldera	Indonesia	2
1940-05-18	Zaozan [Zaosan]	Japan	1
1940-06-16	Telica	Nicaragua	2
1940-06-20	Karangetang	Indonesia	2
1940-07-02	Azul, Cerro	Ecuador	0
1940-07-02	Cotopaxi	Ecuador	2
1940-07-02	Erta Ale	Ethiopia	0
1940-07-02	Karymsky	Russia	2
1940-07-02	Kolokol Group	Russia	–
1940-07-02	Lascar	Chile	2
1940-07-02	Raung	Indonesia	2
1940-07-12	Miyakejima	Japan	3
1940-07-16	Dempo	Indonesia	2
1940-07-24	Lengai, Ol Doinyo	Tanzania	3
1940-08-18	Izu-Oshima	Japan	1
1940-09-16	Tongariro	New Zealand	2
1940-11-16	Tolbachik	Russia	3
1940-11-29	Suwanosejima	Japan	2
1941-01-19	Kusatsu-Shiranesan	Japan	1
1941-01-26	Ulawun	Papua New Guinea	2
1941-01-28	Krakatau	Indonesia	2
1941-03-28	Farallon de Pajaros	United States	1
1941-04-28	Aira	Japan	2
1941-06-06	Rabaul	Papua New Guinea	2
1941-06-23	Llaima	Chile	2
1941-07-02	Fournaise, Piton de la	France	1
1941-07-02	Poas	Costa Rica	1
1941-08-23	Ebulobo	Indonesia	0
1941-09-13	Mayon	Philippines	1
1941-09-21	Semeru	Indonesia	2
1941-10-16	Etna	Italy	2
1941-10-30	Karangetang	Indonesia	2
1941-12-13	Raung	Indonesia	2
1942-01-29	Krakatau	Indonesia	2
1942-02-02	Kusatsu-Shiranesan	Japan	1
1942-04-26	Mauna Loa	United States	0
1942-05-30	Merapi	Indonesia	2
1942-06-06	Ambrym	Vanuatu	2
1942-06-09	Llaima	Chile	2
1942-07-02	Kanaga	United States	1
1942-07-02	Kavachi	Solomon Islands	1
1942-07-02	Popocatepetl	Mexico	1
1942-07-16	Aira	Japan	1
1942-08-10	Ruapehu	New Zealand	2
1942-08-15	Papandayan	Indonesia	1
1942-09-03	Lokon-Empung	Indonesia	2
1942-10-05	Fournaise, Piton de la	France	2
1942-11-16	Hokkaido-Komagatake	Japan	3
1943-02-01	Karymsky	Russia	2
1943-02-20	Michoacan-Guanajuato	Mexico	4
1943-03-16	Tolima, Nevado del	Colombia	2
1943-03-17	Raung	Indonesia	2
1943-03-30	Fournaise, Piton de la	France	2
1943-04-07	Bagana	Papua New Guinea	1
1943-04-13	Azul, Cerro	Ecuador	3
1943-06-16	Okmok	United States	1
1943-06-21	Asosan	Japan	2
1943-07-02	Farallon de Pajaros	United States	2
1943-07-02	Krakatau	Indonesia	2
1943-07-02	Long Island	Papua New Guinea	–
1943-07-02	Marapi	Indonesia	–
1943-07-02	Mayon	Philippines	1
1943-09-18	Sessagara Hills	Papua New Guinea	3
1943-09-26	Niuafo'ou	Tonga	2
1943-10-02	Slamet	Indonesia	2
1943-10-05	Kick 'em Jenny	Grenada	0
1943-11-03	Dieng Volcanic Complex	Indonesia	1
1943-11-24	Rabaul	Papua New Guinea	2
1943-12-09	Asosan	Japan	2
1943-12-16	Telica	Nicaragua	2
1944-01-16	Asamayama	Japan	2
1944-02-24	Reventador	Ecuador	3
1944-03-28	Veniaminof	United States	2
1944-04-11	Fournaise, Piton de la	France	2
1944-04-16	Concepcion	Nicaragua	2
1944-05-09	Slamet	Indonesia	2
1944-06-10	Cleveland	United States	3
1944-06-23	Toya	Japan	2
1944-06-30	Raung	Indonesia	2
1944-07-02	Bam	Papua New Guinea	2
1944-07-02	Copahue	Chile-Argentina	–
1944-07-02	Krakatau	Indonesia	2
1944-07-02	Llaima	Chile	2
1944-07-02	Shikotsu	Japan	1
1944-08-16	Iliboleng	Indonesia	2
1944-10-16	Ruapehu	New Zealand	2
1944-11-05	Sheveluch	Russia	2
1944-11-20	Kurikomayama	Japan	1
1944-12-01	Fuego	Guatemala	2
1944-12-04	Dieng Volcanic Complex	Indonesia	2
1944-12-09	Klyuchevskoy	Russia	3
1944-12-16	Ioto	Japan	1
1944-12-25	Rinjani	Indonesia	2
1945-01-15	Lautaro	Chile	1
1945-02-25	Avachinsky	Russia	4
1945-03-08	Ruapehu	New Zealand	3
1945-03-16	Great Sitkin	United States	2
1945-03-31	Llaima	Chile	3
1945-04-15	Fournaise, Piton de la	France	2
1945-06-04	Okmok	United States	2
1945-06-05	Etna	Italy	1
1945-06-12	Semeru	Indonesia	2
1945-06-19	Klyuchevskoy	Russia	3
1945-06-23	Mutnovsky	Russia	2
1945-07-02	Bagana	Papua New Guinea	2
1945-07-02	Calbuco	Chile	–
1945-07-02	Krakatau	Indonesia	2
1945-09-16	Asosan	Japan	2
1945-09-16	Karymsky	Russia	2
1945-09-16	Maly Semyachik	Russia	2
1945-11-03	Kuchinoerabujima	Japan	2
1946-01-16	Aira	Japan	2
1946-02-04	Myojinsho	Japan	2
1946-02-16	Etna	Italy	1
1946-02-16	Semeru	Indonesia	2
1946-03-16	Purace	Colombia	2
1946-04-15	Kolokol Group	Russia	2
1946-04-16	Karymsky	Russia	2
1946-04-16	Ruapehu	New Zealand	2
1946-04-16	Telica	Nicaragua	2
1946-04-29	Asosan	Japan	2
1946-06-16	Masaya	Nicaragua	1
1946-06-18	Fournaise, Piton de la	France	2
1946-07-02	Chillan, Nevados de	Chile	2
1946-07-02	Tupungatito	Chile-Argentina	2
1946-07-23	Llaima	Chile	2
1946-07-25	Krakatau	Indonesia	1
1946-08-16	Shishaldin	United States	2
1946-09-09	Niuafo'ou	Tonga	2
1946-09-14	Miravalles	Costa Rica	1
1946-09-16	Karymsky	Russia	2
1946-10-23	Klyuchevskoy	Russia	2
1946-10-29	Asamayama	Japan	2
1946-10-29	Semeru	Indonesia	2
1946-11-04	Poas	Costa Rica	1
1946-11-09	Sarychev Peak	Russia	4
1946-11-21	Ruapehu	New Zealand	1
1946-11-24	Kurikomayama	Japan	2
1946-12-01	Manam	Papua New Guinea	3
1946-12-16	Akutan	United States	2
1946-12-26	Krakatau	Indonesia	2
1946-12-30	Asosan	Japan	2
1947-01-08	Mayon	Philippines	2
1947-01-16	Popocatepetl	Mexico	1
1947-01-16	Tolbachik	Russia	2
1947-01-16	Whakaari/White Island	New Zealand	2
1947-01-29	Etna	Italy	3
1947-02-09	Karangetang	Indonesia	2
1947-02-16	Erebus	Antarctica	2
1947-03-13	Bam	Papua New Guinea	2
1947-03-29	Hekla	Iceland	4
1947-04-16	Karymsky	Russia	2
1947-04-16	Sirung	Indonesia	2
1947-04-27	Purace	Colombia	2
1947-05-26	Asosan	Japan	2
1947-06-16	Asamayama	Japan	1
1947-07-02	Fournaise, Piton de la	France	2
1947-07-02	Fuego	Guatemala	2
1947-07-02	Villarrica	Chile	1
1947-07-09	Negro, Cerro	Nicaragua	3
1947-08-22	Soputan	Indonesia	2
1947-09-02	Gede-Pangrango	Indonesia	2
1947-12-01	Karangetang	Indonesia	2
1947-12-16	Gorely	Russia	2
1948-01-16	Telica	Nicaragua	2
1948-01-24	Wolf	Ecuador	2
1948-02-14	Fournaise, Piton de la	France	2
1948-02-15	Tengger Caldera	Indonesia	3
1948-03-01	Nyamulagira	DR Congo	2
1948-03-31	Negro, Cerro	Nicaragua	2
1948-04-07	Iliwerung	Indonesia	2
1948-04-09	Asosan	Japan	1
1948-04-10	Villarrica	Chile	2
1948-04-22	Karthala	Union of the Comoros	2
1948-04-29	Akutan	United States	2
1948-04-29	Iliboleng	Indonesia	2
1948-04-30	Tongariro	New Zealand	2
1948-05-01	Ruapehu	New Zealand	1
1948-06-16	Telica	Nicaragua	2
1948-06-30	Azul, Cerro	Ecuador	0
1948-07-02	Akita-Yakeyama	Japan	1
1948-07-02	Concepcion	Nicaragua	1
1948-07-02	Poas	Costa Rica	1
1948-07-02	Shishaldin	United States	2
1948-07-27	Aira	Japan	1
1948-08-16	Klyuchevskoy	Russia	2
1948-08-16	Negra, Sierra	Ecuador	2
1948-09-01	Camiguin	Philippines	3
1948-09-16	Masaya	Nicaragua	1
1948-09-16	Tongariro	New Zealand	2
1948-09-22	Kuwae	Vanuatu	2
1948-09-29	Merapi	Indonesia	2
1948-10-09	Villarrica	Chile	3
1948-11-04	Izalco	El Salvador	3
1948-11-14	Slamet	Indonesia	2
1948-11-15	Gede-Pangrango	Indonesia	2
1948-12-01	Bagana	Papua New Guinea	3
1948-12-16	Karangetang	Indonesia	2
1949-01-05	Ruang	Indonesia	2
1949-01-06	Mauna Loa	United States	0
1949-02-04	Iliboleng	Indonesia	2
1949-02-05	Niigata-Yakeyama	Japan	2
1949-02-09	Tongariro	New Zealand	2
1949-03-10	Asamayama	Japan	2
1949-04-09	Iliwerung	Indonesia	2
1949-04-15	Azul, Cerro	Chile	2
1949-04-16	Kuwae	Vanuatu	3
1949-04-29	Marapi	Indonesia	2
1949-05-12	Krakatau	Indonesia	2
1949-05-16	Klyuchevskoy	Russia	2
1949-05-26	Purace	Colombia	2
1949-06-12	Iliboleng	Indonesia	2
1949-06-16	Negro, Cerro	Nicaragua	2
1949-06-16	Trident	United States	–
1949-06-24	La Palma	Spain	2
1949-07-02	Azul, Cerro	Ecuador	0
1949-07-02	Gamkonora	Indonesia	2
1949-07-02	Matthew Island	France - claimed by Vanuatu	2
1949-07-02	Rinjani	Indonesia	0
1949-08-30	Akita-Yakeyama	Japan	1
1949-09-14	Karangetang	Indonesia	2
1949-09-14	Lokon-Empung	Indonesia	1
1949-09-16	Llaima	Chile	2
1949-10-15	Marapi	Indonesia	2
1949-10-16	Kuwae	Vanuatu	3
1949-10-16	Suwanosejima	Japan	2
1949-11-16	Fuego	Guatemala	2
1949-12-02	Etna	Italy	2
1949-12-22	Tacana	Mexico-Guatemala	1
1949-12-26	Asosan	Japan	2
1949-12-30	Great Sitkin	United States	1

← 1930s 1950s →

Older decades are less completely recorded; counts also reflect better observation. 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.