Observation Date
4/20/2016
Observer Name
B
Region
Salt Lake » Big Cottonwood Canyon » Brighton Perimeter
Location Name or Route
Brighton to Catherines/Sunset
Weather
Sky
Clear
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Skies were Clear overnight and throughout the day. Winds were LIght out of the NW with no Wind Blown and or Transport observed. Tempertures were at least 9 degrees warmer than on the previous day, and by 1000 they appeared more late Spring-like.
Snow Characteristics
Snow Surface Conditions
Dense Loose
Wind Crust
Melt-Freeze Crust
Damp
Snow Characteristics Comments

The Corn was on today with East Slopes ripe by 9:30, and South good by 10:30. West Slopes were good from 1130 on and even at 1230 they were very great. Strong refreeze despite Overnight Lows barely heating 32 in many mountain locations. The Clear Skies overnight and Low Humidity was obviously helping. All aspects but High NNE, N and NNW now appear to be cooked down enough to be supportable; and the last Storm Event provided a new smooth surface of clean snow. Unfortunately there are Old Ski Tracks and Avalanche Debris out there to contend with and avoid if possible. The High North Facing Alpine still has a breakable Crust on it that is not totally supportable, and in the most exposed places it was Wind Stripped and Slick. Mid an Lower Elevations became sticky and thick by 1200. Cold Dry Snow is hard to find unless you are at least at and above 10500 and on slopes that have angles of at least 30 degrees.

Red Flags
Red Flags
Rapid Warming
Red Flags Comments
A significant Wet Loose Avalanche Cycle appeared to be Widespread and it occurred either on late Saturday or Sunday Afternoon. Debris Piles appeared to run on the old pre-storm interface, and they accumlated/entrained enough snow in many places to be at least 3 feet deep. Overnight Lows Forecast for Wednesday Night appear to be barely adequate to accomplish another refreeze if the Skies remain Clear as Forecast. Despite this, Forecast Highs for Thursday and Friday continue to Rise Significantly, and they may come in another 10 degrees higher. 9000 Foot Highs are expected to hit 60 degrees.
Avalanche Problem #1
Problem
Wet Snow
Trend
Increasing Danger
Problem #1 Comments

Possibly more Wet Loose Avalanches may be shedding during the daytime heating over the next few days. And, at Mid and Lower Elevations where there is still Snow Wet Slabs may be possible.

Avalanche Problem #2
Problem
Cornice
Trend
Increasing Danger
Problem #2 Comments

Any overhanging Cornice may be sensitive and calving over the next 48 hours.

Finished today by 1300 and as a result the Avalanche Hazard for the time out was Low. It probably rose with daytime heating with Wet Activity.

Natural Wet Activity may be possible until it cools down on Saturday; and Rain on Friday may be a problem.

Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate