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 in Tumalo bowl

Location Name
Tumalo Mtn.
Broken Top Area
Bart Wills
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Date and time of avalanche (best estimate if unknown)
Red Flags
Recent loading by new snow, wind, or rain
Rapid warming
Obvious avalanche path
Avalanche Type
Blowing Snow
Trigger type
Wind Speed
Air temperature
Above Freezing
Air temperature trend
Bed Surface
Old Snow
Cloud Cover
25% of the sky covered by clouds
Weak Layer
Storm Snow
Crown Height
Less than 1 ft
Accumulation rate
Avalanche Width
Avalanche Length
Above Treeline
More detailed information about the weather

The day was partly clouldy and very light precip (graupel) with intervals of strong sun and no precip. The tempertures were 39F at 10:30AM and warming.

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

201504251150-WS-AS-U-R2D1-I. On April 25, 2015, at 1150AM, skier unintentionally triggered a wet slab avalanche in the Tumalo Bowl between the rocks. Slope aspect about 65 deg, slope angle 40. Slide started about 30 ft below ridge line was about 60 ft wide and 400 ft long. The skier was not injuried or buried but was knocked down and slid about 100 feet. This was group's second lap in the bowl. First lap was about 11:10 AM after digging, logging, and testing a snow pit and intentionally kicking cornice line. Snow pit showed no signs of instability. See pit profile observation for more detail. The first lap was caused some small pin wheels but showed no other signs of instability. slight change in slope angle and time of day made all the difference.