| Posted: 7:37 a.m., Saturday, February 3, 2007 |
Surprise, surprise! Since yesterday afternoon Hermit Lake received 6.5" (16.7 cm) of new and unexpected snow with a density of 8.1%. The Summit recorded 3.8" (9.7 cm) with a density of 12%, however, it seems that higher snowfall totals occurred at most elevations on the mountain. There is a chance for more accumulating snow in the mountains from up-slope energy, particularly this morning. The summit folks think that these will produce light accumulations while NOAA indicated that 3 to 6" (7.6 to 15 cm) of new accumulation may occur in the mountains. As the weather looks right now it seems that snow is tapering off. Winds are forecasted to be out of the WNW 65 to 85 mph (120 to 154 kph) with higher gusts. These winds will load new snow into the ravines throughout the day and, as a result, create unstable slabs. Given the amount of new snow we have received, the possibility for more today and the increasing winds throughout the day, we think natural avalanche activity is likely in most forecast areas today. Those that are not as likely to avalanche on their own, like North Gully in Huntington, still warrant a High rating as getting to it will put you in the run-out of a number of other gullies. With natural avalanche activity expected today, it would be wise to stay out of the ravines, even if you just want to have a peek. It can be difficult to see where you are in relation to the run-out of an avalanche path in poor visibility.
In addition to increasing winds today we are going to watch the thermometers drop as well. By evening we should see temperatures on the summit around -10 F (-23 C) and tomorrow high temperatures on the summit are expected to be around -20 F (-29 C). That wasn't a typo when I said a high temperature of -20 F. Pair that with west winds 50 to 70 mph (80 to 113 kph) and you have a miserable day to be above treeline. It looks like the very cold temperatures will stick around for most of the week.
THE LION HEAD WINTER ROUTE IS NOW OPEN. This is a steep and challenging route. Crampons, an ice axe and the ability to properly use this equipment are recommended for safe travel on this route.
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Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.
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