General Volcanic Activity Thread!

[The PIT]

Still no new eruption and earth quake activity has reduced tremendously. No guarantee there will be on e of course and the dyke intrusion may have stopped for now.

Vulcano is still steaming away merrily but no new updates as far as I can see.

[matty40s]

 

[Allseasons-Si]

 

[The PIT]

Looks like the dyke injection at Iceland has run out of puff with everything going quiet for a while now. However it still could start all over again in the next few weeks.

[matty40s]

Back to the Pacific Rim...

 

[Kiwi]

The pressure from the Hunga Tonga-Hunga Ha'apai eruption in Tonga was detected in New Zealand - 2,000 km away!

(times are in UTC, so 0600 is 7pm NZ Time or 6am UK time

 

And the satellite shots are amazing!

 

Edited January 15, 2022 by Kiwi

[crimsone]

1 hour ago, Kiwi said:

The pressure from the Hunga Tonga-Hunga Ha'apai eruption in Tonga was detected in New Zealand - 2,000 km away!

(times are in UTC, so 0600 is 7pm NZ Time or 6am UK time

People have actually heard it here in NZ. That's one Biiiiiig phreatomagmatic explosion. The cloud it produced must be 400km across.

You can see NZ on this sattelite image...
 

[Gowon]

Tongans flee for their lives as tsunami smashes island nation after underwater volcano erupts - New York Times Post

WWW.NYTIMESPOST.COM

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Tongans flee for their lives as tsunami smashes island nation after underwater volcano erupts

 

[Kiwi]

18 minutes ago, crimsone said:

People have actually heard it here in NZ. That's one Biiiiiig phreatomagmatic explosion. The cloud it produced must be 400km across.

You can see NZ on this sattelite image...
 

Thanks, just read about people hearing it throughout much of NZ.

I suspect my relatives in Northland may have heard it. Where are you Crimsone? Did you hear or feel anything?

Surprised that, given the violence of the eruption, the tsunami alert seems to be v low level.

 

NATIONAL ADVISORY: TSUNAMI ACTIVITY – EXPECT STRONG AND UNUSUAL CURRENTS AND UNPREDICTABLE SURGES AT THE SHORE

https://www.civildefence.govt.nz/

Edited January 15, 2022 by Kiwi

[Skullzrulerz]

 

 

 

[RabbitEars]

This is truly astonishing and to have multiple captures of satellite images! Poor people of Tonga and surrounding areas! 

Can anyone make a guess as to whether this eruption will affect the weather back in the UK and if so what sort of lag there'd be? 

I do hope that if emergency aid is needed in the areas it arrives quickly! 

[Guest]

This is a nasty one, the pressure waves have been visible on weather stations 3-4,000km away and audible in New Zealand, reports of the explosion being painfully loud in Fiji 800km away. This could be one of the loudest noises since the 1883 Krakatoa eruption. Suspect the tsunami will also have caught a few people out. 

[RabbitEars]

I've asked this in the volcano thread but I'll ask here too... what, if anything, might the effect be on our weather or even the northern hemisphere's pattern from the large eruption in the Pacific Ocean? And what is the likely time lag?

[Guest]

11 minutes ago, RabbitEars said:

This is truly astonishing and to have multiple captures of satellite images! Poor people of Tonga and surrounding areas! 

Can anyone make a guess as to whether this eruption will affect the weather back in the UK and if so what sort of lag there'd be? 

I do hope that if emergency aid is needed in the areas it arrives quickly! 

For climate affecting eruptions you need them to continue for days or weeks, at the moment this certainly won’t be enough to affect the climate despite this being an enormous explosion. 
 

That said there’s nothing to say a bigger blast is possible.

[Guest]

Some bad language in the attached clip but this is one of blasts hitting Tonga about 100km from the volcano. 
 

 

[The PIT]

Impressive eruption column 55,000 ft high and vei 5 eruption

 

[matty40s]

 

Edited January 15, 2022 by matty40s

[The PIT]

One guy in the twitter feeds was lucky to survive. Punching a tree and and clearly doesn't understand the force of Tsunami. Gets swept away but you see him get up later on so he survived. He'll leg it next time.

[matty40s]

Darwin at work.....

 

[matty40s]

The eruption of this volcano started on December 19th 21, it has explosively created quite a lot of new land until this massive eruption. Far too much ash and smoke for satellites to get vision yet, and phones are down in the surrounding islands....possibly due to the massive electrical activity going on.

[Guest]

10 minutes ago, matty40s said:

The eruption of this volcano started on December 19th 21, it has explosively created quite a lot of new land until this massive eruption. Far too much ash and smoke for satellites to get vision yet, and phones are down in the surrounding islands....possibly due to the massive electrical activity going on.

Yep it’s likely the blast will have lead to a submarine landslide or collapse especially the magma chamber was exposed to an influx of sea water. Can’t imagine there’s much left of the new island now. 
 

This off course is the volcano which erupted a couple weeks back where people were initially filming a waterspout.. 

 

 

[matty40s]

8 minutes ago, Alderc said:

 

This off course is the volcano which erupted a couple weeks back where people were initially filming a waterspout.. 

 

 

.....if you care to look at the top of the page....

Clicking the twitter feed takes you to quite a lot of decent info since Day 1, although you may have to use a translation machina 

[Derecho]

1 hour ago, The PIT said:

Impressive eruption column 55,000 ft high and vei 5 eruption

 

Any confirmation of the VEI? 

VEI 5-6 eruptions can impact global temperatures if certain factors allign (volcanoes aren't my speciality but I believe this happens if sufficient SO2 and ash reaches high enough into the atmosphere).

Of course, the additional complication is that this was an underwater eruption.

If the explosion could be heard 1000s of km away, just how loud would it have been if this volcano was above the sea surface?

Frightening power.

[Guest]

2 minutes ago, Quicksilver1989 said:

Any confirmation of the VEI? 

VEI 5-6 eruptions can impact global temperatures if certain factors allign (volcanoes aren't my speciality but I believe this happens if sufficient SO2 and ash reaches high enough into the atmosphere).

Of course, the additional complication is that this was an underwater eruption.

If the explosion could be heard 1000s of km away, just how loud would it have been if this volcano was above the sea surface?

Frightening power.

Reports from Tonga being deafened. Seriously loud and seriously serious. 

[weatherobsuk]

I've been watching the evolution of this volcano on GeologyHub (youtube) which has provided some good details & video of it's sequences since December, I can only assume that after yesterday's Tsunami there's been a breach of ocean water into the magma chamber which has resulted in today's catastrophic explosion. It was GeologyHub who, only yesterday, was calling for buoys to be placed within the immediate vicinity to mitigate risk caused by further Tsunami potential.