Take your terminological qualms up with the experts who wrote it: theconversation.com/alaskas-…

gravity, not always your friend

I was there a few years ago in a 30’ boat. Timing is everything.

Beautiful fluid sim though. I wonder was Houdini or some other package used?

I was there in the Tracy Arm Fjord on Aug. 6th of 2025. I think this picture is part of what collapses (way in the back). We were at Mendenhall Glacier in Juneau a day or two before the Glacier lake broke through and flooded/wiped out that area. Had an up close bear encounter.

Wave: a disturbance or oscillation that travels through space and matter, transferring energy from one point to another without permanently moving the physical particles of the medium. It was a wave. USGS Definition: A tsunami is an ocean wave triggered by large earthquakes that occur near or under the ocean, volcanic eruptions, submarine landslides, or by onshore landslides. Once again, the nomenclature is accurate under both definitions. Not sure why this is something that needs to be debated...

How far up the fjord did they go?

Was Noah’s the highest recorded

had there been more water, this would have caused similar effects x.com/visegrad24/status/2104… This is a climate change side effect nobody thought about

Oh man, I've kayaked in Tracy arm. And ran around in a stiff. I also saw a small landslide kick up a cloud of dust in that same area. I didn't imagine it could be so dangerous.

During the Mount St Helens eruption it caused a landslide that slammed into the water in Spirit Lake creating an 850+ foot wave. 500m (almost double of Spirit Lake) probably looked insane!

We had a similar, albeit smaller even on the south coast of BC a few years ago. cbc.ca/news/canada/british-c…

I don’t understand what created the tsunami like wave in the first place.

They're called Megatsunamis. The slide after Mt St Helens caused one 850' tall in Spirit Lake. The place is still a wreck.

The water level, not a wave

And despite that we didn't lose 20'000 people because we didn't build entire cities in the path of a glacier.

Your saying it produced a 1500 foot wave ? That’s kinda hard to believe is the fiord 1500 feet deep ? Is their enough volume of watter to produce a wave of that height kinda the math ain’t mathing I can see a large wave yes but 1500 feet kinda doubtful honestly

Would be this film IRL en.wikipedia.org/wiki/The_Wa…

those harrowing recordings out of nepal was probably the closest we ever get to seeing something like this directly

Half a kilometre high wave? I don’t think so

Nightmare fuel

What are the odds that cruise ship visits contributed to the glacial collapse

A 500m wave is a natural megatsunami. The cruise ship timing is coincidental-but it highlights how little we prepare for rare events. What would an early warning system look like?

apparently this is a thing. I had never heard of such waves from falling rock or ice until Nepal and this 😮🤔

Ban cruise ships 😏

@grok what is the likelyhood of this happening in Norway in the next 10 years? And which fjord?

How many millions of such tsunami events must have occurred in prehistoric times for landscapes today to exhibit such dramatic topography? And aren't these very extreme events primarily responsible for it?

the cruise ship getting out of there is pure timing luck a few hours earlier and that whole conversation changes

Is it a satellite view or just AI/animation?

just curious: how was it measured via simulations? or there are real time sensors readings? just curious how we measure these events, satellite images?

Been up there with my boat. Great shrimp area

And to think the wave in Lituya bay in 1958 was higher!