Earthquake swarm continues on Reykjanes ridge, small chance of eruption

Today (01-July-2015) earthquake activity continued on the Reykjanes ridge, largest earthquakes so far are magnitude 5,0 (EMSC information here). Second largest earthquake had magnitude 4,8, other earthquakes have been smaller in magnitude. Total of 35 earthquakes that have taken place are larger than magnitude 3,0 and total number of earthquakes when this is written is 537.

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Earthquake activity on the Reykjanes ridge. Green stars are earthquakes that are magnitude 3,0 or stronger. Copyright of this image belongs to Iceland Meteorological Office.

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Earthquake activity has dropped but is ongoing at the moment. Copyright of this image belongs to Iceland Meteorological Office.

Earthquake activity now happens in pulses, with low activity for 2 – 4 hours before it increases again. It is not clear why this is taking place. Overall earthquake activity is dropping at the moment, it might increase again without a warning.

Yellow alert for risk of eruption

The alert level for this volcano that is now making earthquake noise has been raised to yellow. The change happened during my working hours so I was unable to write about it right away. This means there is a risk of eruption at this location, last eruption in this location was in the year 1879 according to the information I have collected here.

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Current warning for the volcano at Eldey is yellow. Copyright of this image belongs to Iceland Meteorological Office.

I don’t know for sure at the moment what the chances are of an eruption at the moment. That should be clearer in next 24 – 48 hours (I hope).

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Article updated at 23:50 UTC.