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Pictures and videos here https://twitter.com/MichaelFieldNZ/status/1482215317388824582 https://twitter.com/MichaelFieldNZ/status/148221531738882458... https:/

Pictures and videos here https://twitter.com/MichaelFieldNZ/status/1482215317388824582 https://twitter.com/MichaelFieldNZ/status/148221531738882458... https://twitter.com/sakakimoana/status/1482218193619865600 https://twitter.com/sakakimoana/status/1482218193619865600 https://twitter.com/_TheSeaning/status/1482230175806992391 https://twitter.com/_TheSeaning/status/1482230175806992391

GekkePrutser 5y ago
Whoa that second link.. that guy is so lucky this didn't turn into a full blown tsunami. I don't think I'd like to live right at the coast if I were in the Pacific. But luckily it seems to be more of a slow eruption
- Taniwha 5y ago
  This is a real tsunami, just not really really big, they are partially protected by a reef. It's not a slow eruption (check out the shockwave in one of the videos, heard in New Zealand). There was a smaller bang yesterday.
- kzrdude 5y ago
  Some of these communities have nothing but a coast! It's probably in a Jared Diamond book somewhere about shifting expectations depending on where you grow up, some people can't imagine that people live in a place where you can't hear the sea, because they only knew that.
  - Someone 5y ago
    Also, for those that have some high areas, chances are the high areas are a volcano. If it is, it likely is an active volcano, as this region is on the ring of fire (https://en.wikipedia.org/wiki/Ring_of_Fire https://en.wikipedia.org/wiki/Ring_of_Fire)
- runeks 5y ago
  > Whoa that second link.. that guy is so lucky this didn't turn into a full blown tsunami. That is what a full blown tsunami looks like, based on watching many YouTube videos on the subject. Bear in mind this is only a minute of footage. If the water keeps coming in like that for an hour it will eventually reach the person shooting this video. The scary thing about tsunamis is that they look fairly innocent in the beginning. And five minutes later there’s ten feet of water moving very fast with houses and cars in it. Here’s a good example of how it can go from looking harmless to terrifying in 25 minutes: https://youtu.be/P8qFi74k2UE https://youtu.be/P8qFi74k2UE
  - johnyzee 5y ago
    Wow. Watching the people's attitude change, from puttering around in slippers joking about the first quaint little trickle, to full judgement day, within twenty minutes.
  - mannykannot 5y ago
    The term 'tidal wave' has been deprecated for some time, as they are not gravity-driven, but it does capture how the wave does not just break on the shoreline like an ocean roller, it keeps on coming.
  - jsrcout 5y ago
    That's a sobering video. It doesn't look like much... at first. The power and violence of the water really has to be seen to be appreciated. Edited to add: On March 11, 2011, large parts of the city were destroyed by the tsunami which followed the Tōhoku earthquake. The island of Ōshima and its 3,000 residents, included in the city limits, was isolated by the tsunami which damaged the ferry connections.[7] After the tsunami, spilled fuel from the town's fishing fleet caught fire and burned for four days.[8] As of 22 April 2011, the city had confirmed 837 deaths with 1,196 missing.[9] https://en.wikipedia.org/wiki/Kesennuma https://en.wikipedia.org/wiki/Kesennuma
  - mythrwy 5y ago
    Wow! Someone else already mentioned it, but this so "interestingly unusual" to "apocalyptic" in twenty minutes it's hard to fathom. Thanks for sharing the link I personally had no idea!
r721 5y ago
Also in this thread: https://twitter.com/IntelDoge/status/1482222778380177408 https://twitter.com/IntelDoge/status/1482222778380177408
- Taniwha 5y ago
  It's worth noting that that cloud is (very) roughly 150km across
- dylan604 5y ago
  I wonder at what point the person shooting that footage starts to question their decision of not getting to higher ground than single story roof
divbzero 5y ago
What would be the timescale of those satellite videos? I imagine they must be time lapse videos?
- perihelions 5y ago
  It has a 10-minute repeat rate (one frame); you can see the timestamps here, https://www.data.jma.go.jp/mscweb/data/himawari/ https://www.data.jma.go.jp/mscweb/data/himawari/
- sml156 5y ago
  Judging by the movement of the sun I would guess a couple of hours, It's hard for me to tell with all the clouds in the sky. https://twitter.com/_TheSeaning/status/1482230175806992391 https://twitter.com/_TheSeaning/status/1482230175806992391 >What would be the timescale of those satellite videos? They are animated gif's just a bunch of frames from the original video.
cjnicholls 5y ago
Here is a satiliete view. https://twitter.com/US_Stormwatch/status/1482229220415721475?s=20 https://twitter.com/US_Stormwatch/status/1482229220415721475...
- irthomasthomas 5y ago
  Did they know this was coming? Or how did they manage to have the satellite centred over the volcano at the right moment? Edit: Found the answer, this was the second or third eruption from this volcano. So yeah they where already monitoring it. Amazing how they can manoeuvre these camera satellites now.
  - perihelions 5y ago
    It's a weather satellite 36,000 km from Earth; half of the planet is contained in its field of view. Here, see: https://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=himawari-8/full_disk_ahi_true_color&width=800&height=800&number_of_images_to_display=30&loop_speed_ms=100 https://rammb.cira.colostate.edu/ramsdis/online/loop.asp?dat...
    - irthomasthomas 5y ago
      Is that the same as this though? https://mobile.twitter.com/US_Stormwatch/status/1482229220415721475?s=20 https://mobile.twitter.com/US_Stormwatch/status/148222922041... This looks to be zoomed way closer than your link, you can see small waves on the ocean etc. I did not think you could film the whole face of the earth at that resolution? Edit: Or are those small waves actually large clouds?
      - deleted 5y ago
        [deleted]
      - chasd00 5y ago
        look like clouds to me but i'm not an expert in satellite imagery. the shockwave implies > the speed of sound so more of an explosion than eruption right?
perihelions 5y ago
Barometer data here: https://twitter.com/dbanksnz/status/1482249871566331908 https://twitter.com/dbanksnz/status/1482249871566331908 Roughly +/- 300 Pa pressure wave in New Zealand, about 2,000 km away.
- rz2k 5y ago
  This is from two indoor BMP280 sensors on Home Assistant that are about 5300 miles from Tonga. (They are a floor apart from each other) It's amazing what extremely cheap sensors can currently measure, though 1883 technology was sufficient to measure the pressure wave from Krakatoa circling the globe multiple times. https://imgur.com/a/ydvDtkV https://imgur.com/a/ydvDtkV
dredmorbius 5y ago
https://nitter.kavin.rocks/MichaelFieldNZ/status/1482215317388824582 https://nitter.kavin.rocks/MichaelFieldNZ/status/14822153173... https://nitter.kavin.rocks/sakakimoana/status/1482218193619865600 https://nitter.kavin.rocks/sakakimoana/status/14822181936198... https://nitter.kavin.rocks/_TheSeaning/status/1482230175806992391 https://nitter.kavin.rocks/_TheSeaning/status/14822301758069...

GekkePrutser 5y ago

Whoa that second link.. that guy is so lucky this didn't turn into a full blown tsunami. I don't think I'd like to live right at the coast if I were in the Pacific. But luckily it seems to be more of a slow eruption

Taniwha 5y ago
This is a real tsunami, just not really really big, they are partially protected by a reef. It's not a slow eruption (check out the shockwave in one of the videos, heard in New Zealand). There was a smaller bang yesterday.
kzrdude 5y ago
Some of these communities have nothing but a coast! It's probably in a Jared Diamond book somewhere about shifting expectations depending on where you grow up, some people can't imagine that people live in a place where you can't hear the sea, because they only knew that.
- Someone 5y ago
  Also, for those that have some high areas, chances are the high areas are a volcano. If it is, it likely is an active volcano, as this region is on the ring of fire (https://en.wikipedia.org/wiki/Ring_of_Fire https://en.wikipedia.org/wiki/Ring_of_Fire)
runeks 5y ago
> Whoa that second link.. that guy is so lucky this didn't turn into a full blown tsunami. That is what a full blown tsunami looks like, based on watching many YouTube videos on the subject. Bear in mind this is only a minute of footage. If the water keeps coming in like that for an hour it will eventually reach the person shooting this video. The scary thing about tsunamis is that they look fairly innocent in the beginning. And five minutes later there’s ten feet of water moving very fast with houses and cars in it. Here’s a good example of how it can go from looking harmless to terrifying in 25 minutes: https://youtu.be/P8qFi74k2UE https://youtu.be/P8qFi74k2UE
- johnyzee 5y ago
  Wow. Watching the people's attitude change, from puttering around in slippers joking about the first quaint little trickle, to full judgement day, within twenty minutes.
- mannykannot 5y ago
  The term 'tidal wave' has been deprecated for some time, as they are not gravity-driven, but it does capture how the wave does not just break on the shoreline like an ocean roller, it keeps on coming.
- jsrcout 5y ago
  That's a sobering video. It doesn't look like much... at first. The power and violence of the water really has to be seen to be appreciated. Edited to add: On March 11, 2011, large parts of the city were destroyed by the tsunami which followed the Tōhoku earthquake. The island of Ōshima and its 3,000 residents, included in the city limits, was isolated by the tsunami which damaged the ferry connections.[7] After the tsunami, spilled fuel from the town's fishing fleet caught fire and burned for four days.[8] As of 22 April 2011, the city had confirmed 837 deaths with 1,196 missing.[9] https://en.wikipedia.org/wiki/Kesennuma https://en.wikipedia.org/wiki/Kesennuma
- mythrwy 5y ago
  Wow! Someone else already mentioned it, but this so "interestingly unusual" to "apocalyptic" in twenty minutes it's hard to fathom. Thanks for sharing the link I personally had no idea!

r721 5y ago

Also in this thread: https://twitter.com/IntelDoge/status/1482222778380177408 https://twitter.com/IntelDoge/status/1482222778380177408

Taniwha 5y ago
It's worth noting that that cloud is (very) roughly 150km across
dylan604 5y ago
I wonder at what point the person shooting that footage starts to question their decision of not getting to higher ground than single story roof

divbzero 5y ago

What would be the timescale of those satellite videos? I imagine they must be time lapse videos?

perihelions 5y ago
It has a 10-minute repeat rate (one frame); you can see the timestamps here, https://www.data.jma.go.jp/mscweb/data/himawari/ https://www.data.jma.go.jp/mscweb/data/himawari/
sml156 5y ago
Judging by the movement of the sun I would guess a couple of hours, It's hard for me to tell with all the clouds in the sky. https://twitter.com/_TheSeaning/status/1482230175806992391 https://twitter.com/_TheSeaning/status/1482230175806992391 >What would be the timescale of those satellite videos? They are animated gif's just a bunch of frames from the original video.

cjnicholls 5y ago

Here is a satiliete view. https://twitter.com/US_Stormwatch/status/1482229220415721475?s=20 https://twitter.com/US_Stormwatch/status/1482229220415721475...

irthomasthomas 5y ago
Did they know this was coming? Or how did they manage to have the satellite centred over the volcano at the right moment? Edit: Found the answer, this was the second or third eruption from this volcano. So yeah they where already monitoring it. Amazing how they can manoeuvre these camera satellites now.
- perihelions 5y ago
  It's a weather satellite 36,000 km from Earth; half of the planet is contained in its field of view. Here, see: https://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=himawari-8/full_disk_ahi_true_color&width=800&height=800&number_of_images_to_display=30&loop_speed_ms=100 https://rammb.cira.colostate.edu/ramsdis/online/loop.asp?dat...
  - irthomasthomas 5y ago
    Is that the same as this though? https://mobile.twitter.com/US_Stormwatch/status/1482229220415721475?s=20 https://mobile.twitter.com/US_Stormwatch/status/148222922041... This looks to be zoomed way closer than your link, you can see small waves on the ocean etc. I did not think you could film the whole face of the earth at that resolution? Edit: Or are those small waves actually large clouds?
    - deleted 5y ago
      [deleted]
    - chasd00 5y ago
      look like clouds to me but i'm not an expert in satellite imagery. the shockwave implies > the speed of sound so more of an explosion than eruption right?

perihelions 5y ago

Barometer data here: https://twitter.com/dbanksnz/status/1482249871566331908 https://twitter.com/dbanksnz/status/1482249871566331908 Roughly +/- 300 Pa pressure wave in New Zealand, about 2,000 km away.

rz2k 5y ago
This is from two indoor BMP280 sensors on Home Assistant that are about 5300 miles from Tonga. (They are a floor apart from each other) It's amazing what extremely cheap sensors can currently measure, though 1883 technology was sufficient to measure the pressure wave from Krakatoa circling the globe multiple times. https://imgur.com/a/ydvDtkV https://imgur.com/a/ydvDtkV

dredmorbius 5y ago

https://nitter.kavin.rocks/MichaelFieldNZ/status/1482215317388824582 https://nitter.kavin.rocks/MichaelFieldNZ/status/14822153173... https://nitter.kavin.rocks/sakakimoana/status/1482218193619865600 https://nitter.kavin.rocks/sakakimoana/status/14822181936198... https://nitter.kavin.rocks/_TheSeaning/status/1482230175806992391 https://nitter.kavin.rocks/_TheSeaning/status/14822301758069...