GNFAC Avalanche Forecast for Wed Mar 26, 2025
<p>It will feel like spring today (if not early summer) with temperatures 10 degrees warmer than yesterday and fewer clouds in the sky to block the incoming rays. These conditions will accelerate snow surface warming, and <strong>wet loose avalanches</strong> will pack a serious punch, increasing in volume and traveling farther than yesterday. Southeast through west-facing slopes, and terrain with exposed rocks or cliff bands, will be particularly susceptible as they are exposed to and absorb more heat (<a href="https://www.mtavalanche.com/node/34755"><strong><span>Bradley’s Meadow avalanche</span></strong></a>, <a href="https://www.mtavalanche.com/node/34763"><strong><span>Gallatin Canyon avalanches</span></strong></a>). Yesterday, local ski patrol snow safety teams closed terrain to manage the threat within ski area boundaries. In the backcountry, limit your exposure to problematic aspects and slopes as the snow transitions from frozen and mostly stable to wet and unstable. Move to shadier, northern aspects when the snow surface becomes saturated or you notice warning signs, such as pinwheels or small wet avalanches nearby.</p>
<p>Concern about <strong>wind slab avalanches </strong>has decreased since the last storm ended. However, triggering an unstable drift remains possible, especially on higher elevation slopes below cornices and where the snow remained cool yesterday. Look at photos of wind slab avalanches that broke naturally on Saddle Peak (<a href="https://www.mtavalanche.com/images/25/avalanche-saddle-peak"><strong>ph…;) and in Cooke City yesterday and the day before for examples (<a href="https://www.mtavalanche.com/node/34751"><strong><span>photo and details</span></strong></a>, <a href="https://mtavalanche.com/node/34742"><strong><span>details and photo</span></strong></a>). Avoid obviously wind-loaded slopes or evaluate the upper snowpack for instability. Signs like cracking will not be forthcoming before an avalanche occurs.</p>
<p><strong>Persistent slab avalanches</strong> are less likely, but remain a concern, particularly in the Lionhead, Southern Gallatin, and Southern Madison Ranges, and to a lesser extent, the Cooke City area. Several avalanches broke 2-3 feet deep on buried weak layers within the last week in the Taylor Fork area (<a href="https://www.mtavalanche.com/node/34722"><strong><span>avalanche 1</span></strong></a>, <a href="https://www.mtavalanche.com/node/34697"><strong><span>avalanche 2</span></strong></a>) and north of Cooke City (<a href="https://mtavalanche.com/node/34742"><strong><span>avalanche 3</span></strong></a>). Reduce your risk by selecting smaller slopes without terrain traps and following safe travel practices. Testing the snowpack before entering steep terrain will help you identify instability.</p>
<p>Each avalanche problem demands distinct management strategies, so be mindful of the most pressing threat at any given time. The avalanche danger is MODERATE in the morning but will quickly rise to CONSIDERABLE as wet snow instability intensifies.</p>
Wet slides in Gallatin Canyon
In Gallatin Canyon we saw some wet slides in the chutes/gullies south of Lava Lake
In Gallatin Canyon we saw some wet slides in the chutes/gullies south of Lava Lake. Photo: USFS Snow Rangers
Forecast link: GNFAC Avalanche Forecast for Wed Mar 26, 2025
Wind slabs North of Cooke City
Today we noticed these natural small wind slabs on Mt Henderson.
Today we noticed these natural small wind slabs on Mt Henderson. Photo: J Mundt
Forecast link: GNFAC Avalanche Forecast for Wed Mar 26, 2025GNFAC Avalanche Forecast for Sun Mar 30, 2025
Weather and Avalanche Log for Wed Mar 26, 2025
Temps most at or slightly above freezing
Wind Slab Avalanche on Saddle Peak
Noticed crown and debris on drive up Bridger Canyon this morning. Looks like a wind slab.
Noticed crown and debris on drive up Bridger Canyon this morning. Looks like a wind slab. Photo: Peter H
Forecast link: GNFAC Avalanche Forecast for Wed Mar 26, 2025
Understanding Avalanche Safety Preparedness – 5-Minute Survey for Motorized Users
We need your input! Eastern Oregon University is conducting a survey to better understand avalanche safety preparedness among motorized backcountry users like you. Your feedback will help us learn more about who is purchasing and practicing with avalanche rescue gear (beacon, probe, shovel) and participating in avalanche education—and why some riders aren’t. The survey is confidential and anonymous.
Wet Loose Avalanche Bradleys Meadow
We skied past a wet loose avalanche that came off of the south face of Bradley‘s Meadow. It was slightly bigger than the rest of the wet snow activity that I observed during the day.