** 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.

Todd Lake

Observation Date/Time:
Thu, Feb 6, 2020 - 3:07 PM
Reporter(s):
Phil Bowker
Location/Elevation:
Three Sisters Area / 6776'
Report Type:
Snow Conditions   No Avalanche Activity  
Travel Mode:
Snowmobile   Ski or Snowboard  
Temperature:
1°C
Sky Conditions:
Overcast (> 7/8)
Precip Type/Intensity:
Mixed Rain & Snow / S-1 Very light snow
New Snow:
5 cm
Height of Snow (HS):
325 cm

Written Report:
This morning (10:21am) at the top of Todd Ridge winds where calm, air temp was +1c (33.8f), precipitation was mixture of light rain and ice pellets, visibility was fair with overcast skies, boot penetration was 30cm.

The main theme for the day was a widespread rime crust (up to 5cm) at all elevations and aspects around the Todd Lake area. The crust was damp, breakable and covered with up to 5cm of new damp snow in places.

Digging into the snowpack on Todd ridge I could see multiple layers of recent storm snow above the melt freeze crust formed last weekend. During a compression test I got a CT15 BREAK sheer quality at the interface between the old melt freeze crust and the new storm snow 10cm down.

While skiing Todd Ridge I did not see any signs of instability in the snowpack in terms of shooting cracks, whumphing or recent avalanche activity.

Leaving Dutchman at 1:30pm the temp was +3c (37f) and a river was running through the parking lot.

Phil

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