Little Cottonwood Canyon Circuit

The Utah Avalanche Center has no rating posted for the Salt Lake zone — in late May this almost certainly means they've closed out the season, not that data is missing. That doesn't mean the mountain is safe. Without a bulletin, you're flying without instruments, so read the snowpack yourself: look for recent wet avalanche debris, listen for audible collapsing, and probe for a firm morning crust before committing to any steeper terrain. The absence of a formal bulletin puts the hazard assessment entirely on you.

The temperature profile this weekend is the central issue. Highs of 58°F today and 61°F Sunday, with overnight lows only dropping to 34–43°F, means the snowpack is not getting a solid overnight refreeze — especially below about 9,500 feet. Long Lake SNOTEL at 8,400 feet is showing 61 inches of depth but a falling SWE trend, confirming active melt. Without a firm morning crust, wet loose and wet slab can run on any steep solar aspect within an hour or two of direct sun. North aspects will hold better structure longer, but even those will soften by mid-afternoon under these temps.

Winds are light all weekend — 3 to 9 mph WSW/SSW — so wind slab loading is a non-issue. No precipitation in the forecast (2–3% Saturday night is noise). The avalanche problem here is entirely wet and entirely time-dependent. Plan to be skinning by 7 AM, on your objective by 9–10 AM, and transitioning off steep terrain by noon at the latest. North-facing lines above 10,000 feet will give you the best snow quality and the most forgiving timing window. Avoid south and west aspects on steep terrain after 10 AM — they'll be going wet by then.

Stream flows in the data set are California gauges pulled in error — disregard them for LCC planning. Canyon runoff will be active given the melt rates, so be aware of wet creek crossings on lower approaches. With 14.5 hours of daylight and a stable weather window through Sunday, you have a solid three-day window — just be militant about turnaround times. This is May corn skiing at its best if you're disciplined, and a wet slide problem if you're not.