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06/18/13, 06:52 PM

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NWAC Avalanche
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| | |-+  Recent snowpack obs.
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Author Topic: Recent snowpack obs.  (Read 1103 times)
btbd
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Recent snowpack obs.
« on: 05/03/12, 11:32 AM »

No snowpack observations posted recently on NWAC site. Anyone digging out there?
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Col
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Posts: 45


Re: Recent snowpack obs.
« Reply #1 on: 05/03/12, 01:00 PM »

I haven't dug a pit recently, but pole (handle) penetration test are not showing any crust or obvious layers in the top meter of snow. Where I've been (Crystal, Rainier, Snoqualmie), it seems like the entire snowpack is wet below 7k'. Any significant slide activity has started on or below cliffs or cornices that released during recent warmth and rain. Plenty of small to medium size wet sluffs and rollerballs out there, and probably more cornice releases happening now. Telemetry shows 13" of new snow and 30+ degrees at Green Valley today with 30+mph winds.

With respect to the possibility of a deep wet slab, changing weather, and new snow, I would rate the danger at considerable trending toward high for areas near and south of I90. Conditions change notably above 8k' on Rainier, but probably not getting any safer.
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Pete A
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Re: Recent snowpack obs.
« Reply #2 on: 05/03/12, 02:19 PM »

might be worth noting that it doesn't look like the Green Valley telemetry station is being reset/ cleared off daily and the 13-14" showing at green valley didn't fall today...its whats been piling up since April 30th. 
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btbd
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Re: Recent snowpack obs.
« Reply #3 on: 05/09/12, 09:55 AM »

Thanks for responding. Seems like there was some recent activity due to warming as well as a special NWAC advisory.
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