| Trigger | Natural | Remote Trigger | 0 |
| Avalanche Type | Wet Loose Snow | Aspect | South Southwest |
| Elevation | 3500ft | Slope Angle | 35deg |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Hatcher Pass
Location: Mid and Upper elevation Observations
Toured up around Marmot, Microdot, and IM bowl. Significant warming over the past several days. Lots of new avalanche activity.
Avalanche Details
Observed numerous wet-loose avalanches today. Wet-loose triggering slabs, slabs triggering wet-loose, and sizeable wet-loose. See pics
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observer Comments
Significant temperature increase this week. Several wet-loose avalanches triggered small slabs, slabs triggering sluffs, and small to moderate size wet-loose- mostly on SE through SW aspects. Watched wet-loose avalanches between 3-5 pm go naturally on Marmot and Microdot.
Weather
No new snow since 3/28,3/29.
Wind gusts SE 27 mph of 4/1, 29 mph on 4/3, 22 mph on 4/5.
37deg. F at 4500' at 4pm.
40 deg. F at 3450' at 3pm.
Snow surface
Snow surface is wet in most locations and easily forms snowballs. Rollerballs were observed on all aspects today. Old wind slabs on SE through SW aspects turning into wet slabs sitting on old persistent grains.
Snowpack
Hand shears show easy failure with wet surface snow , failing in mid-pack persistent slab 6-10" deep. Heavy wet snow on top of lots of weak facets!
1F surface snow-wet 0-3"
4F rounding facets 3-6"
F facets- failing mid pack 6" - ground
See pics
Upper stairstep- slab avalanche (squint and look in the center), likely 4/2-4/4. SS-N-D1-O
Marmot naturals 4/5. SE -SW aspects. 3000-4000'. Wet-loose and slabs.
Marmot SW aspects wet-loose 4/5 3500'-4000'
easy snowball making with wet snow surfaces
Marmot- slabs and wet-loose triggering each other 4/5
W= wet surface snow 1F to 4F hardness over P= F hard persistent slab facets
Microdot S face Wet-loose sluffs occurred at 5pm ,4/5.
Loose sluff Rae Wallace W aspect
Marmot SW surface slabs warming up!