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São Jorge Volcano

Updated: 28 mar. 2024 21:25 GMT -
fissure vents 1053 m
Azores Islands, Portugal, 38.66°N / -28.11°W
Current status: normal or dormant (1 out of 5)
Last update: 25 dic 2023 (Smithsonian / USGS Weekly Volcanic Activity Report)
Aerial view of the volcanic ridge with aligned cinder cones in March 2022 (image: Eva K)
Aerial view of the volcanic ridge with aligned cinder cones in March 2022 (image: Eva K)

The linear São Jorge (San Jorge) Island is 54 km long and only 6 km wide. It was formed by fissure eruptions beginning in the eastern part of the island.

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Typical eruption style: Effusive
Erupciones del volcán São Jorge: 1580, 1808

Latest nearby earthquakes

Fecha / HoraRevista / Prof.Distancia / Ubicación
28 mar 17:29 (Azores)
28 mar 18:29 GMT
1.8

0 km
22 km al noroeste Océano Atlántico, Portugal, 28 km al noroeste de Isla de São Jorge , Azores Más
miércoles, 27 marzo 2024 GMT (1 sismo)
27 mar 20:24 (Azores)
27 mar 21:24 GMT
2.0

5 km
16 km al noroeste Portugal, 7.6 km al noroeste de Velas, Azores Más
domingo, 17 marzo 2024 GMT (1 sismo)
17 mar 17:49 (Azores)
17 mar 18:49 GMT
2.4

15 km
27 km al sureste Azores Islands, Portugal Más

Background

The western two-thirds of dominantly basaltic San Jorge volcano contains youthful, fissure-fed lava flows resembling those on neighboring Pico Island. Subaerial lava flows issued from three locations above the south-central coast during 1580, producing lava flows that reached the sea.
In 1808 a series of explosions took place from vents along the south-central crest of the island; one of these fed a lava flow that also reached the southern coast. Submarine eruptions were reported on several occasions from vents off the southern and SW coasts.
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Source: Smithsonian GVP

Latest satellite images

saojorge satellite image sat1saojorge satellite image sat2
mié, 20 jul 2022, 14:00

Sao Jorge volcano (Azores) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 July-19 July 2022 (Continuing Activity)

A seismic swarm at São Jorge began at 1605 on 19 March along a WNW-ESE fissure system stretching from Ponta dos Rosais to Norte Pequeno - Silveira. The seismic data as well as deformation data indicated a magmatic intrusion, though by early April no significant deformation was detected. The frequency of earthquakes had decreased in late May-early June, leading CIVISA to lower the Alert Level to V3 (on a scale of V0-V6) on 8 June. ... Read all
jue, 14 jul 2022, 10:00

Sao Jorge volcano (Azores) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 July-19 July 2022 (Continuing Activity)

A seismic swarm at São Jorge began at 1605 on 19 March along a WNW-ESE fissure system stretching from Ponta dos Rosais to Norte Pequeno - Silveira. The seismic data as well as deformation data indicated a magmatic intrusion, though by early April no significant deformation was detected. The frequency of earthquakes had decreased in late May-early June, leading CIVISA to lower the Alert Level to V3 (on a scale of V0-V6) on 8 June. ... Read all

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