Central CascadesCentral Oregon Avalanche Center
- Above treeline: 2 · Moderate
- Near treeline: 2 · Moderate
- Below treeline: 1 · Low
Avalanche problems
- Wind Slab · possible · size D1–D2 · N, SE, E, NE · near treeline, above treeline
Don't let the end of recent snowfall and decreasing wind speeds fool you. On Monday, it will still be possible to trigger the Wind Slabs that were created on Saturday night and Sunday. Avalanches are possible anywhere that the wind has blown in our most recent snow (we see the most blowing snow near and above the treeline, where the wind blows freely). These avalanches could be big enough to bury or injure a rider.
Issued Sun, Jan 4, 8:00 PM PST · valid until Mon, Jan 5, 8:00 PM PST · Gabriel Coler
NewberryCentral Oregon Avalanche Center
No danger rating that day — The Central Oregon Avalanche Center provides avalanche forecasts for the Newberry Crater National Monument each Saturday and Sunday through April. We also publish a professional observation mid-week. Often we receive pub…
Issued Sun, Jan 4, 6:47 PM PST · valid until Fri, Jan 9, 9:00 PM PST · Gabriel Coler
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Small wind slab released on a ski cutProfessional · sample
Tumalo Mountain, NE bowl · Central Cascades · Mon, Jan 5, 9:40 AM PST · Professional observer (sample) · NE · 7,600 ft
Wind-drifted snow from the weekend on lee slopes below the ridge. A ski cut released a small slab about 8 in. deep that ran 150 ft. Sheltered terrain below was soft and quiet.
Avalanche: Soft slab, size 1, skier (intentional ski cut), NE at 7,600 ft
Shooting cracks · Recent wind loading
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Natural wind slab, likely Sunday nightProfessional · sample
Broken Top, NE cirque · Central Cascades · Mon, Jan 5, 11:15 AM PST · Forecaster (sample) · NE · 8,500 ft
Seen from the moraine: crown about 1.5 ft deep under a cross-loaded gully wall, debris partly covered by drifting. Likely released Sunday night as the winds peaked.
Avalanche: Soft slab, size 2, natural, NE at 8,500 ft
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Snowpit: 10 in. wind slab over softer snowProfessional · sample
Tam McArthur Rim · Central Cascades · Mon, Jan 5, 12:30 PM PST · Professional observer (sample) · E · 7,300 ft
Stiffer wind-pressed snow sitting on Saturday's lower-density snow. Cracking on test slopes near the rim edge, nothing propagating below the lip.
Cracking
Snowpit: HS 55 in. · 4-finger over fist at 10 in. · ECTN 14 at 10 in. · no deeper weak layers of concern
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No signs of instability in sheltered terrainProfessional · sample
Mt. Bachelor backcountry, NW flank · Central Cascades · Mon, Jan 5, 1:00 PM PST · Ski patroller (sample) · NW · 6,800 ft
Below treeline the snow was soft and settled; no cracking or collapsing on test slopes. Wind effect started near treeline, scoured on the ridge.
No cracking · No collapsing
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Saw a small slide on the east faceCommunity · unverified · sample
Tumalo Mountain, east face · Central Cascades · Mon, Jan 5, 2:20 PM PST · Backcountry skier (sample) · E
Small slide below the summit ridge on the east side, looked like it ran yesterday. Didn't get close.
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Winds light, no active loadingProfessional · sample
Ball Butte · Central Cascades · Mon, Jan 5, 3:10 PM PST · Professional observer (sample) · SE · 7,700 ft
Light westerly winds and no blowing snow on the ridge. Old drifts from the weekend still sensitive where they were firm and hollow-sounding.
Hollow, firm drifts