Ad
Observation Date: 
02/18/2018
Observer Name: 
Toddeo
Region: 
Southwest
Location Name or Route: 
Pahvants - Maple Hollow
Weather
Sky: 
Broken
Wind Direction: 
South
Wind Speed: 
Strong
Weather Comments: 
Warm and very windy. Signs of wind trasnport at all elevations.
Snow Characteristics
Snow Surface Conditions: 
Damp
Snow Characteristics Comments: 

Mostly damp, some corn like snow on sunny aspects below 7,000'

Went to look at the pre-storm snow surface.  Only made it to 7,600' due to horrendous skinning conditions, very sticky situation.  Snow that was dry 2 days ago was very damp on the surface.  Below the surface the snow was still relatively dry.

Red Flags
Red Flags: 
Wind Loading
Poor Snowpack Structure
Red Flags Comments: 
Wind was getting down to all elevations today. I imagine there was a lot of transport before things warmed up. Likely still some at the upper elevations. Weak snow pack based on basal facets and weak upper pack. This will come into play if the storm produces, I could see the hazard going to high if we get an inch or more of water weight.
Avalanche Problem #1
Type: 
Wet Slab
Trend: 
Decreasing Danger
Problem #1 Comments: 

Today the hazard was likely wet slabs at the elevations I traveled through.  Likely wind slabs up higher.

considerable hazard.

Avalanche Problem #2
Type: 
Storm Slab
Trend: 
Increasing Danger
Problem #2 Comments: 

These hazards are more for tomorrow based on forecasted snow totals:

Storm slab due to weak surface snow and an unconsolidated mid-pack.

Persistent slab, avalanches can beak to the ground due to basal facets.  

Comments: 

No snow profile, the good news is that the warm weather is consolidating and strengthening the snow pack.  Also shady mid-elevation aspects are actually harboring cover good enough to travel.

 

Photos below:

1.  Thin cover on the approach.

2. The flies are out

3.  The Pahvant hut system is taking reservations for the 2018-2019 winter.

Today was mostly a recon to look at cover and snow surfaces prior to the storm.  Tomorrows hazard of high is based on projected storm totals.

Today's Observed Danger Rating: 
Considerable
Tomorrows Estimated Danger Rating: 
High
Snow Profile Coordinates: 
Ad

Support the Avalanche Center through your purchases

Discount lift tickets
All proceeds from ticket sales benefit the UAC when you purchase your next lift tickets.
Lift tickets available in November
Need new gear?
Make your next purchase from our Affiliate Partners and the UAC will receive a portion of the sales.
Shop
Sign up for our newsletters, emails and daily forecasts to stay up to date.
Subscribe