** 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.

Avalanche on Tumalo Mtn SS-D2-R1

Location Name
Tumalo Mtn - skier's left of middle rocks, bowl
Region
Three Sisters Area
Name
Iain Morris
Email Address
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I would like this observation to be published on the site
Position
Public
Date and time of avalanche (best estimate if unknown)
Red Flags
Recent loading by new snow, wind, or rain
Obvious avalanche path
Avalanche Type
Slab
Blowing Snow
Yes
Trigger type
Skier
Wind Speed
Moderate
Slope
38degrees
Wind Direction
Northwest
Air temperature
Below Freezing
Aspect
Northeast
Air temperature trend
Cooling
Elevation
7800ft.
Bed Surface
Storm Snow
Cloud Cover
100% of the sky covered by clouds
Precipitation
None
Weak Layer
Storm Snow
Crown Height
1 ft
Accumulation rate
<1
Avalanche Width
150ft.
Avalanche Length
250ft.
Terrain
Above Treeline
More detailed information about the weather

 Winds increasing through the day.

Number of people caught
0
Number of partial burials
0
Number of full burials
0
More detailed information about the avalanche

For those interested:Soft slab D2 R1 on a 37deg NE slope, 32cm down on density change (looked like previous storm slab). Dug an adjacent pit in unreleased snow.  CT11Q1 down 36cm, ECTP16 Q2- Iain Morris/Aaron Hartz