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re: Undersea volcanic eruption in Tonga - tsunami hits - US West Coast warned
Posted on 1/15/22 at 1:49 pm to DownSouthCrawfish
Posted on 1/15/22 at 1:49 pm to DownSouthCrawfish
quote:
Fwiw that's Indonesia in those pics.
Then they should definitely already know better.
1
Posted on 1/15/22 at 1:51 pm to LegendInMyMind
https://twitter.com/akrherz/status/1482436390105272320
click link for video...
quote:
15 minute pressure altimeter change via ASOS NWS/MADIS 5 minute interval data. Shows the shockwave from the #Tongaeruption , feel free to use as you wish.
click link for video...
Posted on 1/15/22 at 1:52 pm to Roll Tide Ravens
quote:
Walked right into this one.
Posted on 1/15/22 at 1:53 pm to IAmNERD
quote:
Seems like it couldn't be that deep if it threw shite 20km into the sky. Or maybe it's very deep and it just had that much force.
At that point, the plume starts behaving more like a supercell thunderstorm. It actually develops an updraft with inflow and everything. That increases lift within the plume, making it easier to loft those particles to those heights. If we had good enough radar, we'd probably see actual rotation couplets withing the giant plume. We see them fairly often with wildfire pyrocumulonimbus clouds.
Posted on 1/15/22 at 1:59 pm to Sao
quote:
That was a pretty loud bang knowing they're over 600 miles away.
Could you imagine being 400 miles away from the volcano, on a ship in the middle of the ocean, had not heard anything about the eruption, out on the deck of the ship taking in a beautiful day...when that fricking sonic boom goes racing past you?
I bet that's a pucker moment wondering what that was and what might be following.
Posted on 1/15/22 at 2:00 pm to LegendInMyMind
quote:
At that point, the plume starts behaving more like a supercell thunderstorm. It actually develops an updraft with inflow and everything
Ahh I see. Pretty damn cool.
I'd love to see the final energy estimates of the initial explosion and see how many nukes it would compare to.
Posted on 1/15/22 at 2:05 pm to beerandt
OG vid of girl filming tidal bore in Indonesia 2021 Just doing my good deed of the day.
This post was edited on 1/15/22 at 2:07 pm
Posted on 1/15/22 at 2:10 pm to RummelTiger
quote:
Could you imagine being 400 miles away from the volcano, on a ship in the middle of the ocean, had not heard anything about the eruption, out on the deck of the ship taking in a beautiful day...when that fricking sonic boom goes racing past you
Some might have been closer than that
Posted on 1/15/22 at 2:20 pm to OysterPoBoy
quote:
A 6 inch high tsunami
6 inches, 60 feet, whatever
Posted on 1/15/22 at 2:26 pm to LegendInMyMind
quote:
At that point, the plume starts behaving more like a supercell thunderstorm. It actually develops an updraft with inflow and everything. That increases lift within the plume, making it easier to loft those particles to those heights. If we had good enough radar, we'd probably see actual rotation couplets withing the giant plume. We see them fairly often with wildfire pyrocumulonimbus clouds.
It's been a few years, but iirc from a class I took, the heat vaporizing water makes the ash column supersaturated as it rises, it gets past the freezing point, and ice starts to form in runaway reaction.
Same/inverse process as superheating water in the microwave, where dropping a spoon in it causes it to explosively boil.
The ice particles are then what sends the ash clouds from some lighting, to out of control.
This post was edited on 1/15/22 at 2:27 pm
Posted on 1/15/22 at 2:30 pm to DownSouthCrawfish
And the girl in that video is seen in the other video (same house over the water at left,) her chatter will eventually be translated, but she never realized the potential danger, did she?
Posted on 1/15/22 at 2:39 pm to beerandt
In regards to the lightning, that sounds pretty accurate. I was speaking more to the height of the plume and the conditions that got it there.
Posted on 1/15/22 at 2:45 pm to beerandt
quote:
It's been a few years, but iirc from a class I took, the heat vaporizing water makes the ash column supersaturated as it rises, it gets past the freezing point, and ice starts to form in runaway reaction.
Yep.
Those ice crystals lead to charge being segregated in the cloud, building electric potential and boom.
or to put it another way...
quote:
The ice particles are then what sends the ash clouds from some lighting, to out of control.
Posted on 1/15/22 at 2:57 pm to Duke
The eruption lasted at least eight minutes.
Tsunami warnings for part of Japan warned of an eleven ?foot surge.
LINK
What I can't find is the aftermath:is the earth there still active with earthquakes? What is the character of the ash fall in Tonga? IS the cone building below the surface? Is it degassing? Which side of the trench is it and has any of the trench wall collapsed (which is what made the Indonesian quake so lethal when part of a plate pivoted and displaced water. IIRC)
Tsunami warnings for part of Japan warned of an eleven ?foot surge.
LINK
What I can't find is the aftermath:is the earth there still active with earthquakes? What is the character of the ash fall in Tonga? IS the cone building below the surface? Is it degassing? Which side of the trench is it and has any of the trench wall collapsed (which is what made the Indonesian quake so lethal when part of a plate pivoted and displaced water. IIRC)
Posted on 1/15/22 at 3:07 pm to LegendInMyMind
quote:
pyrocumulonimbus
My new word of the day.
Posted on 1/15/22 at 3:20 pm to BallsEleven
Posted on 1/15/22 at 3:32 pm to SDVTiger
Brah. 
Posted on 1/15/22 at 3:36 pm to udtiger
Tonga Toast at the Polynesian Resort is good
Posted on 1/15/22 at 3:38 pm to real turf fan
quote:
What I can't find is the aftermath:is the earth there still active with earthquakes? What is the character of the ash fall in Tonga? IS the cone building below the surface? Is it degassing? Which side of the trench is it and has any of the trench wall collapsed (which is what made the Indonesian quake so lethal when part of a plate pivoted and displaced water. IIRC)
The eruption severed the undersea internet cable to Tonga so info will be sparse for a while.
Posted on 1/15/22 at 3:38 pm to SDVTiger
quote:
A Tsunami is gonna travel across all that ocean to the west coast?
Surfs up in Aussie maybe
Here is part of California flooding from it
quote:
WATCH: Santa Cruz Harbor filled with flood water after Tsunami waves hit California as a result of Tonga volcano eruption
LINK
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