Forecast for the Salt Lake Area Mountains

Drew Hardesty
Issued by Drew Hardesty for
Friday, November 1, 2013

The avalanche danger is a pockety MODERATE on steep, upper elevation northerly facing slopes. Human triggered slides can be triggered 1 to 1.5 feet deep near the ground on faceted snow from mid-October. Remember that consequences can be more severe in the early season as avalanche victims tend to get raked through the thinly buried rocks, stumps, and deadfall. There have already been 2 close calls in the Colorado mountains on a similar snowpack - let's keep Utah off the accident page! A few human triggered wet sluffs at the mid elevations may be possible as the day heats up and the sun comes out.

In partnership with Ski Utah and Utah's mountain resorts, Craig Gordon and Tim Roberts put together an early season Safe Riding video can be found here -

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Learn how to read the forecast here
Special Announcements

The Utah Snow and Avalanche Workshop is being presented tomorrow Saturday, November 2nd. Details for the morning session for professionals can be viewed HERE and the afternoon session for everyone can be viewed HERE. Tickets can be purchased at the door.

As resorts ready to open, please be courteous, obey any signage, and watch for workers and machines. Remember, the mountain resorts have not conducted any avalanche control work and their terrain MUST be treated as the backcountry.

WE WILL UPDATE THIS FORECAST AS CONDITIONS WARRANT -

Weather and Snow

Total depths of 1 to 2 1/2 feet of snow exist in the upper elevation, northerly terrain in the upper Cottonwoods. Here the pack is supportable enough for decent turns, and keeps you off the ground on slopes with a smooth surface beneath. Upper elevation closed roads and meadows are other options to avoid the rocks. Snow depths on the Park City side are generally less than a foot.

Under partly cloudy skies today, mountain temperatures were in the mid-30s to low 40s. The northwesterly winds, while blustery in the 35-40mph range above 10,000' for much of the early morning hours, have lost some steam and are now a more civilized and pedestrian 10-15mph.

Our own indefatigable forecaster Brett "Cowboy" Kobernik put this great early season snow/weather video segment together - it's worth checking out.

Recent Avalanches

Enough snow for turns...enough snow to slide. A small avalanche cycle occurred Tuesday, October 29th - a mix of naturals and remotely triggered slides. All were above 10,000' on northerly facing slopes, failing on the faceted early October snow. A great way to highlight the Bull's Eye avalanche information is to click on Detailed Information, then Avalanches. (Check it out HERE). Below is a natural slide from upper Big Cottonwood from Tuesday. Most of these slides were roughly a foot deep and 60' wide or so. While no slides have been reported since Tuesday, snow tests continue to indicate lurking instability along the new snow/old snow interface. A couple videos demonstrating this can be found here.

(photo below by Brighton Snow-safety)

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Avalanche Problem #1
New Snow
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(photo/synopsis - Hardesty)

A slab of snow sitting on a weak layer - the ingredients for an avalanche. Most of northern and central Utah received early October snow, which has persisted (and weakened) only on the upper elevation northerly facing slopes, and is pockety in nature. This layering was quite sensitive Tuesday and Wednesday, but is getting more stubborn as the snowpack has adjusted to the additional weight from the Monday/Tuesday foot of storm snow. On the other hand, the strong winds from this morning would have likely created some sensitive new wind drifts in the highest, steepest terrain. Those heading into the Cottonwoods this weekend may do well to avoid, say, the steepest terrain off the highest ridgelines (ie- the Baldy Chutes, American Fork Twins; etc).

Additional Information

We'll have partly cloudy skies tonight and tomorrow before the ridge begins to break down Saturday evening. A strong cold front sweeps through the forecast area mid-morning Sunday, plunging mountain temps to the mid to low teens. Winds will be gusty prior to and during the front, averaging 20-25mph from the southwest before veering to the northwest. Snowfall amounts through Tuesday look to be in the 4-7" range with unsettled weather persisting through mid-week and - at this point - next weekend.

General Announcements

If you trigger an avalanche in the backcountry - especially if you are adjacent to a ski area – please call the following teams to alert them to the slide and whether anyone is missing or not. Rescue teams can be exposed to significant hazard when responding to avalanches, and do not want to do so when unneeded. Thanks.

Salt Lake and Park City – Alta Central (801-742-2033), Canyons Resort Dispatch (435-615-3322)

Twitter Updates for your mobile phone - DETAILS

UDOT canyon closures UDOT at (801) 975-4838

Remember your information can save lives. If you see anything we should know about, please participate in the creation of our own community avalanche advisory by submitting snow and avalanche conditions. You can also call us at 801-524-5304 or 800-662-4140, email by clicking HERE, or include #utavy in your tweet.