Fagradalsfjall volcano update: Lava overflows building shield around main vent, ash venting

Fri, 2 Jul 2021, 18:09
18:09 PM | BY: T
Lava overflow from the main vent last night (image: mbl.is webcam, screenshot via vulkane.net)
Lava overflow from the main vent last night (image: mbl.is webcam, screenshot via vulkane.net)
Latest lava flow field map as of 28 June 2021 (image: www.almannavarnir.is)
Latest lava flow field map as of 28 June 2021 (image: www.almannavarnir.is)
Ash venting this morning (image: mbl.is webcam, screenshot via vulkane.net)
Ash venting this morning (image: mbl.is webcam, screenshot via vulkane.net)
Although activity might seem to have been less vigorous during much of the past week compared to earlier stages, the eruption continues. Lava effusion rate has been at least stable if not following an overall slowly increasing trend, as last week's published data from the Icelandic Meteorological Office shows (see previous post).
After a few days with little visibility of the volcano, clouds cleared yesterday and showed that significant amounts of new lava had been erupted into the growing shield around the main vent, which in turn now seems smaller.
At about 9:30 p.m. yesterday, a prolonged lava overflow began as the lava level in the crater rose, producing small fountains, and large amounts of lava over-spilled onto the sides. Similar episodes are likely to have occurred during periods of bad weather as well.
Another lava flow made its way towards the Natthagi valley, which continues to be more and more filled as well. The flow stopped at around 2 a.m. Around 3:40, an ash cloud was seen rising from the vent, and tremor fell significantly at the same time. This lasted approx. 12 minutes and similar but smaller events with ash venting occurred several times later on.
What caused this change is not completely clear, but one likely scenario is that the magma column dropped temporarily and caused internal collapses in the emptied parts of conduits.

Previous news

Thu, 1 Jul 2021, 04:29
The graph shows parameters of the lava flow discharge rate, lava area, lava volume, rock geochemistry and volcanic gases over the past month (image: IMO)
On 26 June, the University of Iceland's Institute of Earth Sciences reported a summary of eruption parameters documented since May 10. The parameters showed lava flow discharge rate, lava area, lava volume, rock geochemistry and volcanic gases. The graph below depicts an overview of the results. ... Read all
Show more
Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

More on VolcanoDiscovery

Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.
Home | Travel | Destinations | Volcanoes | Photos | Earthquakes | About | Glossary | News | Contact | Privacy | Imprint || Français | Deutsch
Follow us:
Follow us on facebookFollow us on TwitterVisit our Youtube channel