Bollettino valanghe

East Slopes North

Northwest Avalanche Center
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Pericolo valanghe

Tue
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
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In sintesi

On Monday, you can trigger avalanches in wet snow on many slopes, as well as avalanches in newly drifted slabs at middle and upper elevations. New snow, wind, and rain will all contribute to the avalanche conditions. Stay alert to changing weather and the onset of rain.

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    Rain will fall on new and recent snow. Most wet avalanches will be small, but they could be very reactive on the recent snow. Be ready for dynamic conditions. If the day starts with snowfall, be ready for shallow storm slab conditions and an imminent switch to rain. Wet avalanches can be forceful enough to injure you or push you into other hazards, even if they're not big enough to bury you. 

    (11/17/2025)

    An example of a small (D1) wet avalanche on Hwy 20. This occurred around 11/14-15 on the closed roadway.

    Photo: WSDOT

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–2.5

    On Monday, another round of westerly wind will form slabs near ridges and in exposed terrain at middle and upper elevations. Avoid steep slopes with deep drifts near ridgelines and exposed alpine bowls. Avalanches could be easy to trigger. Steer around steep convexities and unsupported terrain features. Look for blowing snow and drifting. If you observe long shooting cracks or test slopes produce small avalanches, stick to slopes under 30 degrees. Warming temperatures and rain will eventually reach ridge tops and limit the formation of new wind-drifted slabs.

    (3/12/2026)Shooting cracks were observed in wind-drifted snow on Thursday.Photo: Will Govus

Avalanche Discussion

Snow will start overnight and will switch to rain on Monday, likely between mid-morning and afternoon. However, the cold temperatures and snow could hold out much longer, especially east of the Cascade Crest. The biggest uncertainties are the timing of the switch from snow to rain and how much precipitation will fall as rain. This will affect whether avalanches are dry or wet and how widespread wet avalanches are.

On Sunday, an NWAC forecaster in the Blue Lake area reported minor cracking in wind-drifted snow and easy triggering of loose avalanches in sheltered terrain. They also watched a sluff trigger a very shallow slab avalanche below cliffs. A stormy week delivered 2-3 feet of snow over a crust since March 8th. Over the weekend, observers reported widespread, mostly soft, avalanches up to size D2. On Saturday, a skier was caught, but uninjured, in a wind slab avalanche on a southeast aspect at 7600ft near Kangaroo Ridge.

There have been no recent observations of avalanches running on older persistent weak layers from mid-February. With all the recent snow, these weak layers are worth keeping in mind. The 2/13 facets above the 2/7 crust can still be found on a variety of aspects and elevations about . 

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