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Update 8.12. at 12:30

The Icelandic Meteorological Office elevated the aviation color code from yellow to orange on the 6th of December for Grímsvötn volcano when the seismic actvity increased above normal level in the aftermath of the glacial outburst (which peaked on 05.12). On that day a M3,6 earthquake occurred at 6:16 UTC and 15 more earthquakes occured within the day. However, yesterday (07.12) very few earthquakes were identified in the area and the geophysical parameters all showed normal values. Based on these current observations, IMO moved the aviation color code from orange back to yellow as there were no clear indications for an imminent eruption.

Since 18th of September no eruptive activity has been observed at Fagradalsfjall, but there are still small quantities of gas measured in the atmosphere. During the eruption a deflation signal was detected around Fagradalsfjall, most likely due to magma withdrawal from a deep reservoir which was feeding the eruption.

The National Weather Services of Denmark, Iceland, Ireland and The Netherlands are joining forces to jointly operate a new supercomputer and to bring significant advancements to short-term weather forecasting services.

During the past month (18th September - 18th October) no lava flow from the crater has been detected at Fagradalsfjall volcano. Out gassing is still ongoing with very low concentrations of eruptive gases. Similarly, thermal anomalies continue to be detected at lower values and greater intervals between detection's.

Yesterday, 19^th of September marks 6 months since the beginning of the eruption. The lava flow from this eruption is thought to be relatively small compared to other eruptions in Iceland. However, due to its location and easy access for scientists and the public it has had a bigger impact and made more challenges then other eruptions.