Avalanche Advisory Archive 2016 – 2018

Date Issued:2017-02-08 06:31:03
Primary Trend:2
Primary Probability:3
Primary Likelihood:1
Primary Size:1
Primary Description:

We have seen 10 days without any new precip now. There was only a small amount of light snow on the ground beofre this for transport after all the rains we had to near summit.

We have seen 10 days more than half of them with winds. Small slabs have been built in isolated locations around the region.

These are fairly stiff now but remain the primary concern

Secondary Trend:1
Secondary Probability:6
Secondary Likelihood:1
Secondary Size:1
Secondary Description:

With sun on ths slopes and several degrees a day of diurnal fluctuation we have started to see small wet loose avalanches in the afternoon on sunny aspects. Mostly small in size.

With the colder temps today solar radiation may be limited and we probably will see little to no activity of this kind.


The National Weather Service Forecasts-

Today- Sunny early in the morning then becoming partly cloudy. Highs 24 to 28. Light winds becoming east 10 mph in the morning.

Tonight- Mostly cloudy. Lows 16 to 21. Light winds.

Thursday- Partly cloudy. Highs around 30. North wind 10 mph in the morning becoming light and variable.

We have seen no precipitation over the last 10 days. This has given the snowpack time to settle and bond. The snowpack is very strong for the most part.

We have seen a great deal of wind. This has created windslabs in places. These remain the greatest concern. They are not widespread but if you look far and wide you could find weak windslabs in isolated places.

The temperatures remain quite cool around the region. This morning the Mt Roberts Tram is showing 18f again and Eaglecrest is cooler with 15f at the base, 16f mid mountain and 14f on summit.

Winds are light this morning with Eaglecrest showing 6-8mph winds and Mt Roberts only from 5-7mph. We may see a little windloading but with not much snow to transport this will remain limited at these lower wind speeds.

With more cold temps and no precipitation in the forecast the avalanche danger is LOW this morning. Both natural and human triggered avalanches are not likely.

Watch the sunny slopes for small point release avalanches in the heat of the day... but other than that things should be fairly stable around the region. Yesterday remained quite cold and should that occur again today this activity will be limited.

Simply be aware of those windslabs in isolated locations.

Have a great day and pray for some cold temps to stick with us through this weekends snow that is in the forecast.


Here is a link to a great story about the Tunnel Creek Avalanche.

This was a sad day... but there were many lessons to be learned.


Forecaster:Tom Mattice