Advisory for Salt Lake
Advisory for Salt Lake
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Skies are clear. Temperatures straddle 0°F. Winds are 10-15mph from the north and nearly double that along the 11,000' level. For today, we'll have sunny skies, light to moderate winds from the northwest and temps slowly warming into the upper teens. They say that there are hundreds of words that describe snow, but after the recent bout of strong winds, I'd say that there are only a few left suitable for polite audiences. The Outlook: A storm out of the northwest splits, with a cut-off Low pressure system retrograding back to the southwest. Beyond that, who among us can forecast a wobbly cut-off Low? If forced to guess, I'd say we might pick up a couple measly inches of new snow over the weekend with perhaps the Park City mountains and the Wasatch back receiving the lion's share.
Avalanche control work in upper LCC yesterday produced a 2 foot deep and 125 foot wide avalanche in a heavily wind loaded northeast facing starting zone. Ski guides noted some fresh natural wind slabs in upper Cardiac Bowl as well. Observations and Avalanches
Mark White's video of the relentless blowing and drifting of snow tells the tale. The backcountry is now littered with stiff and stubborn hard slabs of wind drifted snow. They'll be found all around the compass, but more commonly on aspects with an easterly component. They'll be found well off the ridgeline and eddied around unusual features. Remember, with hard slabs, you're "on top" of the pillow. With soft slabs, you're "in" the pillow. Hard slabs have a nasty habit of fracturing well after you're on to the slope. It may be another day or so before these rounded whales settle out and stabilize.
Pockets of MODERATE avalanche danger exist around the compass at the mid and upper elevations. It's still possible to trigger a stiff and stubborn hard slab of wind drifted snow 1-2 foot deep and perhaps 100 feet wide. On west to north to east facing aspects at the mid and upper elevations, there is still an off-chance of triggering a hard slab that steps into an old persistent weak layer buried 2-4' deep. Caution is still advised.