OT, Massive Volcanic Explosion in the Pacific
kyoto kid
Posts: 42,083
...early Saturday morning (States time) a gigantic underwater volcano exploded north of Tonga. It sent out a pressure wave that was recordefd as faraway as as California and Australia ad was heard in several locations in the Pacific region for m Fiji to New Zealand, Australia, and even Alaska . It also created a tsunami that inundated parts of the island nation of Tonga and evne affected Hawai'i, Japan, California and even Chile. All coastal areas surrounding the Pacific were placed under a tsunami watch .
The event was even seen from space and recorded by several satellites.
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Comments
Blessings to all those affected.
Amazing footage.
Yeah, there was a tsunami watch last night here in Hawaii. But it was only a concern for surfers or swimmers. It was only about 0.4ft high, not quite apocalyptic yet.
surprised surfers are not seeing it as a challenge
Wow, that's impressive! I hope people are ok...
"I tell you, man, you've never really surfed until you've surfed a tsunami."
"Barry, that tsunami was five inches tall."
"Yeah, but still ..."
The northwest coast of North America (Portland, Seattle, Vancouver...) is on a long-term tsunami watch for when the cascade subduction zone activates. They have posted a simulation video of a hypothetical 9.0 earthquake in the cascade zone. Not trying to panic people living over there, just file it in the 'next big San Francisco earthquake' category. We know one will happen eventually, probably not today or tomorrow or this week or this month... But good to take reasonable building precautions now and be informed about how to react in the future.
Pretty interesting graphics.
https://www.dnr.wa.gov/programs-and-services/geology/geologic-hazards/Tsunamis#tsunami-simulation-videos
They would, on the East coast.
I've been to more than one surf contest at Cocoa Beach, Florida where the waves were on strike and the surfers were on the beach crying,
Checked in with friends.They're all fine, thank goodness. One friend has friends vacationing in Hawaii, so waiting to hear about them.
Absolutely amazing video, thanks KK.
We had tsunami warnings for most of the west coast of Canada, but thankfully it was only up to 30cm high in the worst spots. Hope others in areas in the Pacific who are more severely affected can recover quickly.
They picked up the pressure wave even in Baton Rouge:
The pressure wave was estimated to be traveling at about 800 mph
It was also picked up here in Finland, over 15 000 kilometers (9320mi) away
The Abyss is opening.
Hmmm... "Abyss" isn't that a female abbot? And just what is she open to?
we know some folks on Ahe Atoll in French Polynesia.. They said that they felt the pressure wave go past, but no real issues with waves or sea levels..
...living in western Oregon, have been very aware of this.
While the resulting tsunami would inundate coastal communities and the areas surrounding the western portion of the Columbia River it wouldn't be much of a factor by the time it reached further inland. The Rainier and Kelso/Longview WA area may see a momentary rise in the river level but the energy should pretty much have dissipated by then
The bigger concern is from the prolonged shaking that is expected coupled with ground liquefaction, particularly here in Portland as the city is divided by a river and likely most bridges across it would fail, One exception might be the Fremont bridge which is a large arch suspension span north of the city centre opened in 1973. However, most likely the freeway approaches to it would collapse so there would be no access to the span itself. Meanwhile the Marquam Bridge to the south whcih carries I-5 over the river was designed by the same contractor which the built the Nimitz Freeway on the east side of San Francisco Bay using a similar twin deck design that collapsed during the Loma Prieta quake of 1989. The bridge here was retrofitted and reinforced following that but given the expected magnitude of the resulting quake (9.0 or greater) it could likely fail in a similar manner.
On top of that there is also serious concern about the Cascade volcanoes, particularly Rainer and Hood as they are very close to large population centres, and like the underwater one off of Tonga, tend to be the explosive kind.
Yeah, interesting times here.
a few Tongan islands have been inundated by the ocean, Tonga low areas are inundated with the airport being checked out now by NZ & Aus military to see if emergency workers can be flown in.
We were on Tsunami watch for the past 24 hours on the South Coast NSW but has now been lifted.
The Tongan government has said "immediate assistance" is needed as the island kingdom deals with the fallout of the massive volcanic eruption.
...thank you for the update.
It's not even so much the airport, but if here is still a lot of ash in the air surrounding area, air operations would be seriously hampered.
Years ago all four engines of a British Airways 747 had flamed out after the aircraft flew through an ash cloud from a volcanic eruption in Indonesia. By a stroke of good fortune the crew, which was faced with possibly having to ditch the giant aeroplane in the Indian Ocean, was able to get the engines restarted one by one again and made a successful emergency landing at Jakarta, albeit almost blind as the windscreen had effectively been sandblasted by the ash..
Queenslanders woke to an ash and dust spectacular sunrise this morning which is in the upper atmosphere
...any images?
I thought tsunamis arose mostly because of sea floor earthquakes not underwater volcanoes.
Anything that produces an abrupt displacement can cause a tsunami
So it's kind of like dForce?
dForce explosions are even more unpredictable and wild, IMO... although volcanic eruptions definitely are more violent and dangerous.
That video from the satellite is amazing. Equivalent to ~"1000 atomic bombs"? That's a big-gas eruption.
Not quite. dforce is more of a mental power, although Luke did learn to lift his space ship.
When you stare into the Abbess, the Abbess stares into you.
Kind of scared for those Tsongans although they've communicated with some of them since the eruption.