Does Hawaii count as part of the Ring of Fire?

It is within the Ring of Fire. ;-)

Cheers.

But, the topic is not related to the Pacific "Ring of Fire". It is within the ring but it's also not related to the ring. It's a hot spot, not a plate boundary. The ring is composed of plate boundaries.

Iceland, Reykjanes:

https://en.vedur.is/about-imo/news/a-seismic-swarm-started-north-of-grindavik-last-night

Updated 15. February at 16:00 UTC:
Model calculations [...] suggest that magma accumulation from the end of the eruption [...] until yesterday, 14th of February, is about 2 million m3. It was estimated that when the eruption began [...] about 10 million m3 of magma propagated from Svartsengi towards Sundhnúkur crater row. If magma accumulation continues at same rate, a total of 10 million m3 will be accumulated by the end of February or beginning of March, by which time likelihood of dyke propagation and volcanic eruption will increase significantly.

Looks like the same process of magma intrusion followed by dyke propagation and eruption is repeating itself over and over again within ~1.5 months distance. Like in the movie “Groundhog Day". Unfortunately, the history of the Reykjanes Fires of 800 years ago appears to repeat in this century, as mentioned here before. The residents of the evacuated town of Grindavík will probably have to make a very difficult choice at some point: an unpredictable future in their hometown or a completely new beginning somewhere else.

For many residents of Grindavik the very painful decision has been forced on them. There are so many unrecorded cracks, up/down-lifts across the town their homes have become uninhabitable, so they are moving to other towns. As you say this is going to be painful for them, as some will be moving from a place they've lived in for years (and within walking distance of work) to a not only another town, but no longer within walking distance of work. Friends who live in Iceland say many of the designated building plots to the east of Reykjavik are stating to have foundations laid with new houses due to arrive in a few weeks time - the biggest hurdle is the lack of heating and power connections to these new houses.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

Iceland is at it again, more or less the same place as the last one. Blue Lagoon evacuated, but no roads or pipes cut (yet).

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

Was trying to post the following earlier but site was probably feeling the after shock

Magnitude 4.7 earthquake rocks New York City, tri-state area

A rare earthquake shook the New York area Friday morning, rattling parts of the Big Apple, Connecticut and New Jersey.

The preliminary 4.7-magnitude earthquake struck near Lebanon, New Jersey, around 10:23 a.m., according to the US Geological Survey.

Tremors could be felt as far north as New Paltz, New York and as far south as Delaware.

Mount Etna, Sicily, Italy, having fun.
https://www.bbc.co.uk/news/av/world-europe-68752290

The Phlegraean Fields, Naples, Italy, having tremor:

Naples sits on volcanic monsters - and one of them threatens to consume the city
wrote:

They are tremors caused by magma and gases shifting deep underground, and in recent years they have been felt frequently across Naples. On 20 May 2024, the area was shaken by 160 earthquakes, including one with a magnitude of 4.4, the strongest to hit the region in 40 years.

The cause? Beneath the city – and indeed most of the bay – there's an enormous "caldera", a type of volcanic crater that collapsed after a violent eruption thousands of years ago. It's called the Campi Flegrei (Phlegraean Fields), and it is 12-15km wide (7.5-9.5 miles). Unlike Vesuvius, it has no visible cone, and so goes largely unnoticed day-to-day, but with so many people living on top of it, it's considered one of the most dangerous in Europe. One eruption attributed to it 39,000 years ago was so big that some of the material ended up in Siberia.

Kilburn and colleagues interpret this to mean that the volcano is doing something new. If the previous uplifts were benign magmatic intrusions, then this would suggest the recent changes could be gas, he says. And if so, that could mean the volcano is essentially inflating, creating new gaps for magma to push through – and potentially reach the surface. "The crust today is not in the state it was 40-50 years ago," he says. "Whether there's an imminent eruption or not, it's unusual that a volcano does this."

Vesuvius and Campi Flegrei both share the same magma chamber, an Italian super volcano, if it erupts again and the chamber collapses, there will be a lot of dead people there and land will collapse into the chamber.

More likely a limited eruption within the large caldera, like the Monte Nuovo eruption of 1538. A complete collapse of the caldera there is very rare in geological times (tens of thousands of years); the impact would probably be a global winter, the local deaths only a forgotten aspect of the global impact. Humanity has no memory of eruptions of such scale as those that have already occurred there more than 10,000 years ago. (significantly more powerful than Tambora in 1815, which was the largest one "witnessed" and known by mankind)

Possible new eruption soon, like today, in Iceland

Iceland Met office says that the Blue Lagoon, and the Grindavik area has been evacuated as at 11:00 UTC (Iceland time). Swarm of tremors in last few hours, nearly a 100 in the last hour https://vafri.is/quake/

Multicam view of the area https://www.youtube.com/watch?v=ukxaqTkfVY8 or https://www.youtube.com/@mbl_is/streams for links to each stream.

Possible new eruption soon, like today, in Iceland

It's about time, considering the recent magma accumulation.
(diagram: estimated magma accumulation vs. days since last eruption for all previous eruptions since Oct 2023):
(source)

Started within the last 5 minutes.

latest news: AP
GRINDAVIK, Iceland (AP) — A volcano in southwestern Iceland erupted Wednesday for the fifth time since December, spewing red streams of lava in the latest display of nature’s power and triggering the evacuation of the popular Blue Lagoon geothermal spa.

Seems the protective walls (brown lines) so far were sufficient to divert lava around Grindavík. Recent lava flows in violett; older ones grey-colored (larger version linked). (source)

Italy has a double act performing.

Mt Etna and Stromboli volcanoes erupt over Italy.

Italy's Mt Etna and Stromboli volcanoes erupted on Friday, spewing hot ash and lava into the skies of Sicily.

Etna, located near Catania on the Italian island's eastern coast, is one of the world's most active volcanoes and has seen intense activity in recent days.

The smaller Stromboli volcano, located on Sicily's northern coast, spilled lava into the sea.

The volcanic ash fall forced a temporary shutdown of Catania Airport on Friday, while Italy's civil protection agency issued a red alert for Stromboli.

Warning the situation could deteriorate, Civil Protection Minister Nello Musumeci said Stromboli was "under surveillance" and authorities were making sure evacuation plans were ready in case of emergency.....

Rift near to Blue Lagoon, Iceland opened at about 21:30 UTC yesterday evening.

Multi-cam view at https://www.youtube.com/watch?v=O9dJzk8IQx4
goto https://www.youtube.com/@mbl_is/streams for specific cameras.

[edit] Good overall view at https://www.youtube.com/watch?v=43ttXiCUOF8

Magnitude 4.7 earthquake rattles large parts of NSW

A magnitude 4.7 earthquake has rattled New South Wales, cracking windows, causing thousands of power outages and forcing some schools to evacuate.

The quake – initially identified as a magnitude 5.0 before being downgraded twice – hit just before midday near Muswellbrook in the Upper Hunter Valley, 250 kilometres north-west of Sydney.

More than 2,500 people reported feeling the quake to Geoscience Australia from as far away as Coffs Harbour, Sydney and Canberra.

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Grant
Darwin NT

2024-08-22 21:26 UTC:


Seems the interval between eruptions increases over time as well as the accumulated amount of magma between:


Source

Lava is on the surface, Magma is underground, this is from what I've read, plus I did earn a badge in geology years ago.

You are right.

They do GPS-based measurements of the land uplift above a known magma chamber near the Blue Lagoon. From this, the scientists can determine the amount of magma that has accumulated. As soon as the chamber is full, magma propagates a few kilometers horizontally to a rift zone to the East. Weak earth quakes start days before the next eruption fissure opens up spreading Lava.

The whole process seems to repeat over and over again. How long? Years? Decades? Centuries? Nobody knows. Bad prospects for the future of the nearby village Grindavík.

The rift zone runs more or less North-east to South-west, passing about 2.5km to the East of the Blue lagoon.
The whole area around the Blue Lagoon, a major geothermal power plant and Grindavik is covered by an array of GPS and other sensors which allow the tracking of height and lateral movements, in addition to highly detailed quake and tremor recording. The whole area "enjoys" a vast number of small quakes, both during the inflation and deflation phases of the magma dome. Combined with the gathering pool of human experience allows the approximate location of a new eruption to be predicted (probably to the nearest 0.5km - good enough to get a wide angle camera to view the site. With all the recent activity they are getting quite good at predicting both the location and the time of a probable eruption, so can pre-emptively evacuate affected structures like Grindavik and the Blue Lagoon (the power plant is now run from a remote location so very few people actually on site).

How long will this activity continue? If past eruption phases in the area are anything to go by then 100-200 years, with all the major structures in the area being buried in that time. I hope the Iceland government has plans in hand for a new harbour and power plant.
What of the airport and Reykjavik? Well that's a big question, while not at immediate risk the road linking the two could easily be rendered unusable which would be a serious blow as there is only one airport in the country capable of handling large international flights - a new one needs to be built in a "safe" location within "easy" reach of Reykjavik (unless that city is moved somewhere else).

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

Magnitude 4.7 earthquake rattles large parts of NSW

A magnitude 4.7 earthquake has rattled New South Wales, cracking windows, causing thousands of power outages and forcing some schools to evacuate.

The quake – initially identified as a magnitude 5.0 before being downgraded twice – hit just before midday near Muswellbrook in the Upper Hunter Valley, 250 kilometres north-west of Sydney.

More than 2,500 people reported feeling the quake to Geoscience Australia from as far away as Coffs Harbour, Sydney and Canberra.

Well I certainly didn't feel it, but there is a theory about it.

According a geophysicist the 4.7 earthquake in Denman could have been triggered by one simple factor.

The 4.7 magnitude earthquake that rocked the town of Denman in NSW could have been caused by coal mining in the area, according to an expert.

The quake, which shook homes and sparked panic, was recorded at 12.02pm on Friday with reports of tremors as far south as Sydney, 171km away.

There were no reports of serious injuries but chimneys collapsed and some residents suffered power outages.

The quake hit directly underneath BHP’s Mt Arthur Coal mine.

A few miners were reported to have suffered minor injuries......