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.

Ski cutting at mt bachelor

Location Name
Mt Bachelor
Three Sisters Area
Ski patrol
Email Address
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I would like this observation to be published on the site
Date and time of avalanche (best estimate if unknown)
Red Flags
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Avalanche Type
Blowing Snow
Trigger type
Wind Speed
Air temperature
Below Freezing
Air temperature trend
Bed Surface
Storm Snow
Cloud Cover
Weak Layer
Storm Snow
Crown Height
3 ft
Accumulation rate
Above Treeline
Number of similar avalanches
More detailed information about the avalanche

 Lots of activity this morning on several different aspects, NE, E, SE. Typical results with explosives in the bowl, ski cut the lower west wall and propagated 100 yards with the crown 3+ feet R3D2. The corkscrew off of cows face went large also with explosives R3D2. 2' crown . Rainbow ridge and Larry valley were ski cut and they too went larger than normal. Rainbow ridge was a R1D1, 2' crown. Larry valley had similar results R2D1.5 2'crown.We are expected to get a huge warm up throughout the week with temps pushing into the mid 60s so play it safe wherever you end up.