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Pro tip for people moving north; don't buy land in the valleys around Mt. Rainier. This type of flood (also known as a lahar) has occurred there many times. The

Pro tip for people moving north; don't buy land in the valleys around Mt. Rainier. This type of flood (also known as a lahar) has occurred there many times. The mudflows reached the harbor of Tacoma in the past. [0] I expect we'll see at least one new one in our lifetime, as the glaciers have been greatly affected by rising temperatures. [0] https://www.usgs.gov/media/images/mt-rainier-lahar-hazard-map https://www.usgs.gov/media/images/mt-rainier-lahar-hazard-ma...

pcthrowaway 1mo ago
Do you have a source about the Nepalese flood being a Lahar? I've only read that it was caused due to the glacier collapse, which seems like a different thing
- waste_monk 1mo ago
  I can't access the OP article at the moment, but there's a diagram of the the chain of events that caused the disaster here [1]. I believe Lahars are specifically volcanic, this would be better described as a combination flood and landslide at the same time. [1] https://www.bbc.com/news/live/c6y8mjmnpxv0t?post=asset%3Ac6b90848-f7da-4932-9175-881bdd0d455a#post https://www.bbc.com/news/live/c6y8mjmnpxv0t?post=asset%3Ac6b...
- hodgesrm 1mo ago
  Thanks, I see that Lahars are technically associated with volcanoes as another comment noted. They have a variety of causes of which glacial collapse is one. [0] The term jökulhlaup describes a flood originating from a glacier, for example draining of a glacial lake. [1] It now seems the Nepali flood was triggered by a landslide onto a glacier. As a practical matter the effects are pretty similar. Rainier has had lahars and jökulhlaups in the past. [0] https://en.wikipedia.org/wiki/Lahar https://en.wikipedia.org/wiki/Lahar [1] https://en.wikipedia.org/wiki/J%C3%B6kulhlaup https://en.wikipedia.org/wiki/J%C3%B6kulhlaup
rezaprima 1mo ago
A bit off topic about the word "lahar", we Indonesians use that word to mean "lava", and we use "lahar dingin" (lit: cold lava) to mean volcanic mudflow.

pcthrowaway 1mo ago

Do you have a source about the Nepalese flood being a Lahar? I've only read that it was caused due to the glacier collapse, which seems like a different thing

waste_monk 1mo ago
I can't access the OP article at the moment, but there's a diagram of the the chain of events that caused the disaster here [1]. I believe Lahars are specifically volcanic, this would be better described as a combination flood and landslide at the same time. [1] https://www.bbc.com/news/live/c6y8mjmnpxv0t?post=asset%3Ac6b90848-f7da-4932-9175-881bdd0d455a#post https://www.bbc.com/news/live/c6y8mjmnpxv0t?post=asset%3Ac6b...
hodgesrm 1mo ago
Thanks, I see that Lahars are technically associated with volcanoes as another comment noted. They have a variety of causes of which glacial collapse is one. [0] The term jökulhlaup describes a flood originating from a glacier, for example draining of a glacial lake. [1] It now seems the Nepali flood was triggered by a landslide onto a glacier. As a practical matter the effects are pretty similar. Rainier has had lahars and jökulhlaups in the past. [0] https://en.wikipedia.org/wiki/Lahar https://en.wikipedia.org/wiki/Lahar [1] https://en.wikipedia.org/wiki/J%C3%B6kulhlaup https://en.wikipedia.org/wiki/J%C3%B6kulhlaup

rezaprima 1mo ago

A bit off topic about the word "lahar", we Indonesians use that word to mean "lava", and we use "lahar dingin" (lit: cold lava) to mean volcanic mudflow.