| Trigger | Skier | Remote Trigger | Yes |
| Avalanche Type | Soft Slab | Aspect | South Southwest |
| Elevation | 2000ft | Slope Angle | unknown |
| Crown Depth | 12in | Width | 100ft |
| Vertical Run | 200ft |
Avalanche: Turnagain
Location: Seattle Ridge
We rode and skied around Seattle Ridge in Triangle Bowl, Warm up Bowl and up to the Headwall near Big Cheif. We saw multiple fresh avalanches around 50-200′ wide and a foot deep or so on average. Most of these were human-triggered from today, but we also saw a handful of natural avalanches from during yesterday’s storm. Storm totals varied from around 6-10″ where we traveled. We didn’t dig any full pits but we were stopping to do a ton of hand pits as we traveled, looking closely at the interface between yesterday’s storm and the previous surface. We noticed this interface made for a very clean shear plane, and we were able to tease out a few very small surface hoar crystals here and there. This all seems very similar to the previous storm interface, which was very reactive the day after the storm but healed quickly over the following week.
Avalanche Details
Multiple skier-triggered avalanches on Widowmaker. Some were remote.
Weather
Mostly sunny skies and calm winds. Cool temps up high, but surfaces were getting quite warm in the afternoon with temps in the low 40s F at the parking lot.
Snow surface
6-10" new snow from the past 24 hours. North to northwest slopes stayed cold and dry all day, but upper-elevation easterlies formed a thin melt/freeze crust by this afternoon as they went back into the shade.The uptrack was wet and sloppy by the time we rode down around 5 pm.
Snowpack
We saw several skier-triggered avalanches on Widowmaker in Main Bowl failing at the 4/9 storm interface. We dug a ton of hasty hand pits as we traveled, and they were all shearing very easily and cleanly on that interface- 6-10" deep on average. The worst offenders were slopes that had a crust prior to the storm, which were mostly east to south facing. Although we were able to spot a few very small (~1-2mm) surface hoar crystals at that interface, it seemed the main factor was just that we were out right after the storm finished. We'll be paying close attention to this interface over the next few days, but are hoping this will be a short-lived problem.
Multiple human-triggered avalanches on Widowmaker in Warmup Bowl. 04.10.2024
Natural avalanches closer to the headwall near Triangle Bowl. 04.10.2024
Small, likely remotely triggered avalanche in Tincan's Common Bowl. 04.10.2024
Rollerballs on the Repeat Offender slide path right above the uptrack this afternoon. 04.10.2024
Looking south at Sunburst, Magnum, Cornbiscuit, Lipps, and both Petes. 04.10.2024