Avalanche

Microwave Hill

Andy HarringtonSnoqualmie Pass
View on map
Observation photo 1Observation photo 2Observation photo 3Observation photo 4Observation photo 5Observation photo 6Observation photo 7Observation photo 8Observation photo 9

Quick report

Today I took the sled from Gold Creek up to Microwave Hill to get a look at the snowpack in the eastern part of the Snoqualmie Pass zone. I am glad I decided to take the fan-cooled sled out, because what started as patchy snow quickly became all pavement before I hit consistent snow as you climb the hill away from the flats. To my surprise, as I rounded a corner, there was a truck coming down the snow-filled road toward me, rutting up the trail for everyone that followed.

A firm surface crust existed on slopes that got moist on Saturday and then froze overnight. It started to break down throughout the morning.

I was able to confirm the existence and further track our weak layers of concern in the eastern part of the zone. I also observed natural wet loose activity on sun-exposed slopes. 

Weather

Beautiful blue skies and a light cool breeze.

Snowpack

NE 4873': HS=155, 2/13@117, 2/7@112.

ECTN23 on the 2/13. PST 43/100 END on the 2/13

SW 4330': HS=57, 2/7@27, 2/13 not found

ECTP21 on the 2/7, very subtle crust exists @ 37cm

 

In both locations, facets were found above the 2/7, which is burly and strong. No real concern below.

Buried SH was found at the 2/13 in the northerly pit.

Avalanche

There was one sizable slab avalanche on a south facing slope near Hi and Lo Box Peaks. Otherwise, wet loose activity was observed.