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 Post subject: Yosemite Rockfall
PostPosted: Wed Sep 27, 2017 8:09 pm 
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Kiwi Flat
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Location: In the gurgling maw of the Pacific.
Scary nature. One fatality and one injured w a few climbers in the area (Waterfall trail?) on E Buttress, El Capitan.

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 Post subject: Re: Yosemite Rockfall
PostPosted: Thu Sep 28, 2017 7:07 pm 
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Cornice Bowl
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There's been a second rock slide.
http://abc7.com/2nd-rockslide-occurs-at ... t/2465507/

Ken Yager, president and founder of the Yosemite Climbing Association, said he witnessed the most recent rock fall that appeared to be "substantially bigger" than the earlier one.

Driving past the base of the iconic El Capitan rock formation, Yager said he saw the dust cloud and emergency workers rushing to the scene. Images posted on social media showed a massive cloud of thick dust spreading across Yosemite Valley.


All the way into the Merced River, according to this climber above it.

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 Post subject: Re: Yosemite Rockfall
PostPosted: Thu Sep 28, 2017 8:54 pm 
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Rodger's Ridge
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Pic of the bigger one earlier today shot from above it

https://www.instagram.com/p/BZmfE6eFG4S/


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 Post subject: Re: Yosemite Rockfall
PostPosted: Thu Sep 28, 2017 9:25 pm 
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Cornice Bowl
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Is this weakening the aftermath of the winter?

Date: September 28, 2017
One fatality, one injury, and all people accounted for

A series of rockfalls occurred yesterday afternoon from the Southeast face of El Capitan in Yosemite National Park. Seven rockfalls occurred over a four-hour time span, with the initial rockfall happening at 1:52 P.M. Pacific Daylight Time.

A preliminary estimate for the cumulative volume of all seven rockfalls is about 16,000 cubic feet (450 cubic meters), or about 1,300 tons. The irregular "sheet" of rock that fell is estimated to be 130 feet tall, 65 feet wide, and 3-10 feet thick. The source point is about 650 feet above the base of El Capitan, or about 1,800 feet above the floor of Yosemite Valley (which is at 4,000 feet in elevation).

https://www.nps.gov/yose/learn/news/add ... l-park.htm


@YosemiteNPS 5h5 hours ago
Northside Drive exiting Yosemite Valley is closed due to a new rockfall off of El Capitan. Use Southside Drive to exit Yosemite Valley.

@YosemiteNPS 2h2 hours ago
Larger rockfall on El Capitan today, with one injury. Debris reached a road, so detour in place; drive with caution in Yosemite Valley.
https://twitter.com/YosemiteNPS/status/ ... 0342464518

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 Post subject: Re: Yosemite Rockfall
PostPosted: Thu Sep 28, 2017 10:13 pm 
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Rodger's Ridge
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It's just what the rock walls do. I doubt you can tie it to anything specific whether it was this winter or something else. Just take a hike along any wall in Yosemite and you'll be surrounded by giant rocks that have fell from the walls.


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 Post subject: Re: Yosemite Rockfall
PostPosted: Thu Sep 28, 2017 10:30 pm 
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Cornice Bowl
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But so many in such quick succession.

There's a really good photo in this article of the slide.
http://www.mercurynews.com/2017/09/28/y ... ing-route/

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 Post subject: Re: Yosemite Rockfall
PostPosted: Fri Sep 29, 2017 8:16 am 
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Climax
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Extreme amount of water this year. Freeze /thaw cycle kicking in. I expect more of the same.


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 Post subject: Re: Yosemite Rockfall
PostPosted: Fri Sep 29, 2017 12:00 pm 
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Cornice Bowl
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I read that this is prime time for the rock climbers now. After the new cliff face stabilizes I guess the challenge will be to go over where the changes were.

Personally I think I would avoid strolling underneath El Capitan for the rest of this season.

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 Post subject: Re: Yosemite Rockfall
PostPosted: Fri Sep 29, 2017 12:42 pm 
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Cornice Bowl
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The Fresno Bee has a video of the second rockfall as it happened. That roar.
A thundering second Yosemite rockfall injures at least one, startles tourists

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 Post subject: Re: Yosemite Rockfall
PostPosted: Fri Sep 29, 2017 8:36 pm 
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Cornice Bowl
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There was a mini rock fall about 100 feet ahead of us on the Shadow Lake trail today. It would have hurt but they were just a few small rocks.


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 Post subject: Re: Yosemite Rockfall
PostPosted: Fri Sep 29, 2017 10:37 pm 
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Cornice Bowl
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YNP posted this before & after shot.

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