Avalanche Danger

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Jerry Dodrill

climber
Bodega, CA
Topic Author's Original Post - Dec 27, 2006 - 03:18am PT
Be safe out there friends. The high winds and snow load from this storm will make ripe conditions. Let's keep the stats down on that other thread, OK?

-Jerry

Here's a link to the Eastern Sierra Avalanche Center website: http://www.esavalanche.org/

and current weather advisory:
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM PST WEDNESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM PST WEDNESDAY FOR THE SOUTHERN SIERRA NEVADA FROM YOSEMITE PARK SOUTH TO THE KERN COUNTY LINE.

A PACIFIC STORM WILL CONTINUE TO MOVE INTO CENTRAL CALIFORNIA THIS EVENING THEN MOVE EAST OF THE AREA BY WEDNESDAY AFTERNOON. SIGNIFICANT MOISTURE ASSOCIATED WITH THE SYSTEM WILL BRING THE POTENTIAL FOR HEAVY SNOW TO THE SIERRA NORTH OF KERN COUNTY.

SNOW LEVELS WILL INITIALLY BE NEAR 7000 FEET THIS EVENING...LOWERING TO 4500 TO 5500 FEET WEDNESDAY. TOTAL SNOWFALL WILL RANGE FROM 2 TO 4 FEET ABOVE 7000 FEET...WITH UP TO A FOOT AND A HALF OF TOTAL SNOWFALL AS FAR SOUTH AS SEQUOIA PARK.

STRONG WINDS ARE ALSO LIKELY...WITH GUSTS UP TO 70 MPH THROUGH THE CANYONS AND ACROSS RIDGES. THIS WILL RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW.
Maysho

climber
Truckee, CA
Dec 27, 2006 - 09:26am PT
Right on Jerry!

5" of snow this morning on the deck in Truckee! We had howling winds yesterday. Snowpack is still thin so I would say it is a bit early for quality backcountry skiing. Today's avy forecast is "Considerable". For northern Sierra-Yuba Pass to Sonora Pass, check this source, new last year:

http://www.sierraavalanchecenter.org

Peter
Jerry Dodrill

climber
Bodega, CA
Topic Author's Reply - Dec 27, 2006 - 01:39pm PT
Hi Peter. Thanks for that link.

I'm blown away by this: "Maximum wind gust at Sierra Crest past 24 hours: 167 mph"
Matt

Trad climber
places you shouldn't talk about in polite company
Dec 27, 2006 - 01:41pm PT
it's almost felt that way in marin
hossjulia

Trad climber
Eastside
Dec 27, 2006 - 10:00pm PT
Thanks for that Jerry.
It got cold enough, right before this warm storm hit, for a temperature gradient to possibly be forming, setting up for faceting in the bottom of the snowpack.

And yes, there was plenty of a base above 10k or so in the central Sierra for it to be a problem.

There was also some buried surface hoar that Sue Burak found, read her Christmas Day report on ESAC's web site Jerry listed above.

Don't get "hasty" out there, plenty of time to make some good turns yet this season!

When I get back on the pass next week, first thing I'm gonna do is go dig some pits. And sharpen my ice tools.
kunlun_shan

Mountain climber
SF, CA
Jan 11, 2019 - 03:15pm PT
I didn't want to start a new thread, but below is a sad story of a participant in a Level 2 avalanche course dying in the backcountry.

Things must have been very grim considering they were not able to recover his body until the next day. I'm sure everyone was wearing beacons. Am looking forward to a detailed report being released.

https://coloradosun.com/2019/01/07/silverton-avalanche-peter-marshall-safety-course/
rockermike

Trad climber
Berkeley
Jan 11, 2019 - 03:36pm PT
Sad
I took that course 40 years ago. It taught me just enough to not trust myself.
Not to make light of the tragedy but it kind of confirms the hypothesis that the more you (think) you know the more likely you are to die.
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