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São Jorge volcano update: Earthquakes slow down

Fri, 1 Apr 2022, 18:38
18:38 PM | BY: T
Seismic trace of ROSA station on São Jorge island as of 1 April 2022 evening
Seismic trace of ROSA station on São Jorge island as of 1 April 2022 evening
Depth of quakes over time under Sao Jorge volcano
Depth of quakes over time under Sao Jorge volcano
The earthquake swarm continues but with reduced intensity. Only about 10 quakes above magnitude 2.0 occurred in the past 24 hours, although micro-seismic activity remains elevated, and seems to be increasing in the past hours.
Including quakes too small to be localized, official data speak of more than 25,000 tremors in total having occurred since the start of the seismic crisis.
In the absence of other published data, it is impossible to interpret the situation well or make well-founded predictions, but the scenario of a volcanic eruption in a near future seems to become less likely if seismic activity ceases. However, the official alert level remains at V4 (on a scale of 1-6).

Previous news

Wed, 30 Mar 2022, 19:54

Sao Jorge volcano (Azores) - Smithsonian / USGS Weekly Volcanic Activity Report for 23 March-29 March 2022 (New Activity / Unrest)

A seismic swarm beneath the W half of São Jorge began at 1605 on 19 March, with earthquakes along the Manadas volcanic fissure system between Velas (S side of the island) and Fajã do Ouvidor (N coast). CIVISA raised the Alert Level to V2 and then V3 (on a scale of V0-V6) during the morning of 20 March, and finally to V4 that afternoon. On 22 March Proteção Civil e Bombeiros dos Açores noted that, although no official evacuations had been issued, vulnerable people such as patients in the Velas health center were being moved to other locations on the island. ... Read all
Wed, 30 Mar 2022, 09:05

São Jorge volcano update: Magnitude 4 quake rattles island

Seismic trace of ROSA station on São Jorge island, showing the magnitude 4 quake in the evening
The seismic swarm continues with the first occurrence of a widely felt magnitude 4 quake last night at 9:56 pm local time, the strongest so-far in the current swarm. The quake was about 10 times larger than the previous largest-so-far quake, a magnitude 3.3 event at 6.41 pm on 19 March. ... Read all
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São Jorge volcano
fissure vents 1053 m
Azores Islands, Portugal, 38.66°N / -28.11°W
Current status: restless (2 out of 5) São Jorge volcano eruptions:
1580, 1808
Typical eruption style
Effusive
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