** IMPORTANT ANNOUNCEMENT **

As of March 30th, COAC has suspended backcountry avalanche advisories and pro observations until further notice.

On March 23rd, Governor Brown of Oregon issued Stay at Home orders for the public regarding the COVID-19 outbreak. The directives are clear in that “to the maximum extent possible, individuals stay at home or in their place of residence.” On March 27th the Deschutes National Forest issued a closure of all developed recreation sites including trailheads and snoparks. COAC is committed to supporting our community, local emergency services, and agency partners and because of this we felt it important to cease operations as we all work together to minimize the impacts and spread of COVID-19.   

This decision was not taken lightly. Aside from the need to maintain congruency with the Governors' orders, there are inherent risks with backcountry activities in alpine environments and it’s important to consider unnecessary exposure to COAC forecasters, first responders, and local medical staff in light of the current situation.

We look forward to getting back into the mountains and providing you all with the tools to recreate safely in the backcountry. Until then we thank you for your continued support and wish all our mountain community the best of health and wellness.

Advisory for Feb 8 & 9

THIS Avalanche Advisory EXPIRED ON Feb 9, 2020 at 8:22 pm
Avalanche Advisory published on Feb 7, 2020 at 8:22 pm
Issued by Jonas Tarlen
Bottom Line
4-8" of new snow is expected Friday night through Saturday with strong west winds and cold temperatures. This new snow will be easily transported. Watch for windslabs building on lee slopes.
Avalanche Character 1: Wind Slab
Windslabs will build primarily on on NE-E-SE aspects near treeline and above treeline. Look for wind deposited snow below ridge tops and around other features that catch wind transported snow. The current surface snow is a crust. Use this as a reference to gauge how much wind transported snow has piled up.
Avalanche Character 2: Loose Wet
We may see small, isolates loose wet surface slides on Monday as the temps shoot up. Most likely on steep, sunny slopes.
Snowpack Discussion
This week has produced warm temps, some rain, and very little snow. Surface conditions are mostly a supportable melt / freeze crust. We will have to evaluate how the expected new snow bonds to the existing surface snow.

Persistent weak layers are difficult to find in our snowpack. There are very small, rounding near crust facets within the top 20cm and there were some rounded base facets found at Paulina. In general our snowpack is strong and my main focus will be in the upper snowpack with new wind loading.
Recent Observations
There have been no recent avalanches reported in the past week. There have been no signs of instability reported in past week.
Mountain Weather
A strong cold front will arrive Friday nt bringing 4-8" of snow, freezing levels dropping down to 2000' with strong West winds. This front will quickly move out Sunday and freezing levels will shoot back up to 8000' on Monday with sunshine.
Disclaimer

This snowpack summary applies only to backcountry areas. Click here for a map of the area. This snowpack summary describes general avalanche conditions and local variations always occur. This snowpack summary expires in 48 hours unless otherwise noted.


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