Post updated a few times.
There has been a remarkable swarm of earthquakes.
Overnight, there has been a lot of activity, and according to the BBC:
Iceland has declared a state of emergency after a series of earthquakes raised fears of a volcanic eruption.Authorities have ordered thousands living in the southwestern town of Grindavík to evacuate as a precaution.
The Icelandic Met Office (IMO) says it is concerned large amounts of magma - molten rock- is spreading underground and could surface there.
Thousands of tremors have been recorded around the nearby Fagradalsfjall volcano in recent weeks.
They have been concentrated in Iceland's Reykjanes Peninsula, which had remained dormant to volcanic activity for 800 years before a 2021 eruption.
On Thursday, the increased seismic activity in the area prompted the closure of the nearby Blue Lagoon landmark. More than 20,000 tremors have been recorded in southwest Iceland since late October.
Iceland's Civil Protection Agency said the decision to evacuate came after the IMO could not rule out a "magma tunnel that is currently forming could reach Grindavík".
The last evacuation of a town in Iceland due to volcanic activity was in 1973, when Heimaey was evacuated.
The residents were moved to places such as Grindavik, and now it is Grindavik which is being evacuated.
The Blue Lagoon has been closed.
The seismic activity map of Iceland right now is...jaw-dropping.
— Dr Robin George Andrews 🌋☄️ (@SquigglyVolcano) November 11, 2023
These are quakes that have happened in just the last 6 hours. The Reykjanes Peninsula is smothered in thousands of small quakes and some mid-magnitude ones.
That's what happens when rising magma breaks rocks. pic.twitter.com/cia8wdC7Ad
..Guard ship moved further from Grindavík for safety reasons..
— Icevolcanx (@Icevolcanx) November 11, 2023
Last few hours, tremors have come out to sea just SW of Grindavík.
If eruption in sea, it will be explosive, patrol ship Þór, arrived at Grindavík, has been asked to stay away for safetyhttps://t.co/4mfEfSxMQJ pic.twitter.com/r7svfCdE2L
Claire Kyndt shared this Reykjavik Grapevine video:
Huge cracks have opened up on the Grindavík golf course in #Iceland due to the many earthquakes they have had….👀
— Volcaholic 🌋 (@volcaholic1) November 11, 2023
📷 Ragnar Visage pic.twitter.com/2RUK8mwpZH
And Alistair Hamill is following events in a thread which is growing over time:
1/ Possible (likely?) immanent eruption in the Reykjanes Peninsula, Iceland.
— Alistair Hamill @geogviz on Bluesky (@lcgeography) November 11, 2023
Evidence has been building that another eruption is probable in Iceland, close to the previous eruptions. This thread will follow this developing story.
🧵An unfolding thread🧵 pic.twitter.com/3TK5eYKXDR
Beautiful 3D visualization of the last 40 days of earthquakes in the Reykjanes Peninsula, Iceland 🇮🇸 #reykjavik #Grindavíkurbær #iceland#ReykjanesPeninsula#Fagradalsfjall #Grindavík #volcano
— Disaster Tracker (@DisasterTrackHQ) November 11, 2023
📹 Robert Hodgin pic.twitter.com/2rDybo2Zel
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