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Subject Canery Island awakening: El Hierro Volcano Green pre-alert – strong deflation of GPS stations

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Original Message Update 21/08 – 07:11 UTC
- 1 earthquake listed by IGN this morning, A M1.7 at a depth of 11 km at 00:37 UTC
- Tremor is a bit more than normal since yesterday evening but this can be due to bad weather or malfunctioning instrument
- Concerning deformations we have to write exactly the opposite than yesterday. Both PINA and FRON Ultra Rapid data are showing a strong decrease of nearly 2 cm.

Update 20/08 – 23:55 UTC
- At 23:47 a M1.8 earthquake occurred at a depth of 12 km to the West of Frontera. This makes a total of 8 earthquakes today.

Update 20/08 – 20:44 UTC
- 2 more earthquakes during the late afternoon. The first a M1.2 at a depth of 9 km in the El Golfo Bay and the second a M1.8 at a depth of 20 km at the western tip op the island.
- The GPS Ultra rapid inflation from this morning has been confirmed by the more accurate Rapid data for both PINA and FRON stations

Update 20/08 – 13:12 UTC
We are currently in the midst of a slightly changing seismicity pattern. Why ? For the past several days we have seen a lot of (mostly weak) earthquakes at a depth from 10 to 13 km, but since yesterday we see more 20 km hypocenters. The deeper quakes are mostly more powerful. The deeper earthquakes are still located at the western tip of the island (June / July swarm)
These are the last 3 earthquakes :

Read More
[link to earthquake-report.com]

Pictures (click to insert)





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