Observation: Porter Fork

Observation Date
12/14/2019
Observer Name
T Diegel
Region
Salt Lake » Mill Creek Canyon » Porter Fork
Location Name or Route
Porter Fork
Weather
Sky
Obscured
Precipitation
Moderate Snowfall
Wind Direction
East
Wind Speed
Moderate
Weather Comments
snow in the morning, then maybe frontal passage because the winds picked up some and then the snow mostly stopped, though a few showers popped up late in the day. The wind seemed to be coming out of the east, but in this complicated terrain swirling may be happening.
Snow Characteristics
New Snow Depth
12"
New Snow Density
Medium
Snow Surface Conditions
Powder
Snow Characteristics Comments
Once again, a little on the dense, surfy side. Then the showers at the end of the day also had graupel.
Red Flags
Red Flags
Heavy Snowfall
Red Flags Comments
It's clearly snowed a lot in the last few days. GOOD. Best December base in recent memory. But of course, the early season blues of the PWL loom.
Avalanche Problem #1
Problem
New Snow
Trend
Decreasing Danger
Problem #1 Comments
digging a few quick hand pits we saw a couple of mid-storm instabilities: one about a foot down (last 24 hours) and another about 2 feet down (48 hours). Clean shears, but didn't pop out with any intensity.
Avalanche Problem #2
Problem
Persistent Weak Layer
Trend
Same
Problem #2 Comments
We didn't dig down deep enough to get to the ground to confirm if there was the PWL at the bottom, but assume it was there. The question is: at what elevation in PoFo was there snow before Thanksgiving? we skied a lot of open, low angle terrain that has been skied pretty hard over the last week or two, and a little bit of fairly densely treed steeper (33+ degree) slopes that haven't been hit very hard. We had no whoomphs. We did not venture into any windloaded terrain, tho had the perceived E wind continued or increased, it may have gotten slabby even in lower, more typically-sheltered NE facing terrain.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable