| Trigger | Unknown | Remote Trigger | Unknown |
| Avalanche Type | Dry Loose Snow | Aspect | Northwest |
| Elevation | 3100ft | Slope Angle | 30deg |
| Crown Depth | unknown | Width | 50ft |
| Vertical Run | 100ft |
Avalanche: Hatcher Pass
Location: Two Lakes Valley
Toured up safe terrain to Two Lakes valley. As we got out of the top of the alders, LOUD whumpfing sounds every once and a while, like thunder. Felt like some collapsing at times too. Once in the valley, discontinued. Seemed to be an issue where there was some wind-affected snow. At the alders and below, snow was great. Snow above the alder line was ok, but wind affected in some spots closer to the mountains. Middle was good.
Avalanche Details
Small D1 observed while touring up. Not sure if this was triggered by where we turned around earlier or if we just noticed it later, but it was coming off the side of the higher peak not far from our original up-track. Conditions with loud whumpfing seemed like there was possibility of larger releases. Cross loaded slopes up higher.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | No |
Observer Comments
Whumphing LOUD, like thunder.
Weather
Generally wind sheltered in this valley. We could see SE winds kicking up high towards the end of our tour and scraping snow off the Gov Peak/Wimp Bowl area. Vis pretty good considering. 20Fs.
Snow surface
New snow most of the way, as advertised in forecast. A little wind affected about halfway up, but generally pretty good to ski, especially in the alders and below.
Snowpack
No pit dug.