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  #1  
Old 02-07-2017, 12:33 PM
pvalovich pvalovich is offline
 
Join Date: Dec 2005
Location: Ridgecrest, CA
Posts: 439
Default Extreme Turbulence - Owens Valley, CA, Today (Tuesday, 07Feb2017)

Extreme turbulence in the southern part of Owens Valley yesterday and today.

Had a Cessna 421 heading south to north yesterday afternoon between Mojave and Inyokern. Tried to go underneath clouds in attempt to find smoother air. Was rolled upside done out of control. Recovered and landed at IYK. Inner wings skins severely deformed. Haven't yet examined spar. One pilot who has some knowledge thinks plane may be totaled.

Today to the north of IYK large multi-layered lenticular clouds with more vertical development than I've ever seen. Surface winds still very strong.

Probably best to avoid the entire Sierra Crest.
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  #2  
Old 02-07-2017, 01:19 PM
David Paule David Paule is offline
 
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Location: Boulder, CO
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Grab some photos!

Dave
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  #3  
Old 02-07-2017, 01:38 PM
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Ironflight Ironflight is offline
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Location: Dayton, NV
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We were supposed to head down to the cabin for some business down the hill this week, and were going to load the dogs and stuff in our Tundra for its first long cross-country. Alas, the weather at our end has been unrelenting, with high winds and storms on about 36 hour centers. Sounds like the other end of the trip would be as bad - or worse! Today they are calling for 130 mph ridge gusts! Yup - those translate into wicked turbulence in the Owens Valley....

Good time to just hide in the shop and do some building.....
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  #4  
Old 02-07-2017, 01:38 PM
BillL BillL is offline
 
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Location: Central IL
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Default Not related, but scary.

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  #5  
Old 02-07-2017, 02:06 PM
Marc Bourget Marc Bourget is offline
 
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Location: Stockton, California
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These lens shaped clouds are Alto-Cumulus Standing Lenticulars (ACSL) and vertical velocities in excess of 10,000 FPM have been reported. What can’t be seen are the “rollers” that persist miles downwind of the ridge line. Equally as violent.

IIRC, You can expect these to develop any time the winds aloft over the Sierras exceed 25 KTS,

I had my EEEEEE ticket ride in ‘72, on an otherwise clear day. 6.0 and -2.5 on the G-meter.

Last edited by Marc Bourget : 02-07-2017 at 02:07 PM. Reason: replace 10 FPM with 10,000 FPM
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  #6  
Old 02-07-2017, 02:40 PM
BruceW BruceW is offline
 
Join Date: Aug 2005
Location: Elk Grove, CA
Posts: 190
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You got ripped by a mountain wave rotor.
As Obi wan would say, "your lucky to be in one piece."

Some wild stories. Cant find in on quick web search, but I remember story of a P-51 doing wave research back in WWII, got ripped apart. Pilot was thrown out, free fell then hit the chute. Saw pieces of the plane getting pulled up INTO the wave cloud. Then pilot got sucked in to (still in the chute). Ended up landing in the desert 30 miles downwind. Survived.
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  #7  
Old 02-07-2017, 02:58 PM
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n82rb n82rb is offline
 
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Location: fort myers fl
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flew through it last night on a MIA - SFO leg at FL320 constant waves from about dallas to the west side of the sierras. all altitudes sucked and was seeing 40 knot speed changes in level flight. auto thrust was going from full cruise to idle just to try to keep speed constant.

bob burns
RV-4 N82RB
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  #8  
Old 02-07-2017, 03:10 PM
rockwoodrv9 rockwoodrv9 is offline
 
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Location: Meridian ID, Aspen CO, Okemos MI
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Wow. We easily could have been reading this on Katherines Report. Im sure it is the years of training that saved you. Thanks for letting us know about the experience and I would love to see photos of the wing skin too.
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  #9  
Old 02-07-2017, 03:48 PM
eddieseve eddieseve is offline
 
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Location: Sydney, Australia
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Quote:
Originally Posted by BillL View Post
Wow thats amazing
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  #10  
Old 02-07-2017, 04:25 PM
vic syracuse vic syracuse is offline
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That picture is just beautiful. At least there is some visual warning here that it might be bumpy.
Last week I was coming back from Lexington, KY in cruise at 6500' beneath a high broken layer, and about 20 minutes south I hit some severe turbulence in the RV10. No warning. Just BAM! Airplane was completely out of control, and I chopped the power to idle and rode it out for about 20 seconds, although it seemed a lot longer. Then it ended. I reported the severe turbulence and climbed to 8500'. Winds were showing 60-70 knots out of the West and was a direct crosswind, but only very light intermittent chop at times.

Vic
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