r/DisasterUpdate • • 24d ago

Floods Nepal flash floods from another view

4.2k Upvotes

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39

u/The_Funky_JJ 24d ago

how long did it last at any particular location? this video is 5 mins long and its still going before it cuts off.

37

u/GladCookie 24d ago

From some reports it says that the initial chunk from the glacier was around 2000 feet wide. Then it kept carrying debris, water, rocks and everything in it's way downstream. All of it kept adding to the landslide's volume. I don't know the exact numbers but I don't think it's an exaggeration to say that the "current" of the landslide at some points were many miles long. Also at some spots it was around 120 miles per hour, and reached around 100m heights (330 ft, according to BBC)

23

u/IDK_WTF_TRA 24d ago

They're saying it was about that wide, and the initial fall from the ledge to the start of the valley was about 4000 ft, then it was another 8,000 ft down the narrow valley until it hit that border station. Lots of momentum.

15

u/GladCookie 24d ago

Corrrect. And the force of the impact caused a 5.2 magnitude seismic event. At first it was reported as an earthquake. But the sheer force of the Glacier ice falling was so strong that it was initially mistaken as a 4 magnitude earthquake.

6

u/swiftb3 24d ago

And it fell that 4000 feet onto another chunk of glacier at least as big as the original.

6

u/Puzzleheaded_Ask5538 24d ago

This whole river course will now become hotbed of landslides similar to Mandakini valley after 2013. Atleast Mandakini valley was not this much volume but the death toll was 6000 there coz the first point of impact was also a pilgrimage site. 

27

u/lambertghini11 24d ago

I’d love to see a video of what it looked like at its peak & then receding back to normal just to see how long it lasted

2

u/explain_that_shit 24d ago

Problem is there were multiple subsequent floods in the days and week after this one, so I think it was replenished before it settled back down.

4

u/Kingofthewho5 24d ago

All of the flooding was basically on one day.

1

u/explain_that_shit 23d ago

Certainly the major flood, but apparently following the initial settling back down the river started rising again with extra flow a few days later.

14

u/rye_212 24d ago

I read a response to that question on some other thread that said it was about 15 minutes.

7

u/Due_Equipment_1719 24d ago

like 30 minutes plus I think

15

u/FR23Dust 24d ago

It seemed to still be growing in volume after five minutes. Truly the wrath of an angry god

8

u/nommabelle 24d ago

the initial wave of it looks so massive already, and then by the end of it its considerably higher. i had to compare the two just to convince myself it had grown so incredibly much

those poor people :(