Salt Lake Avalanche Advisory

Forecaster: Evelyn Lees

SPECIAL ANNOUNCEMENT

The FUAC is auctioning off a pair of 176 cm Black Diamond Drift skis with custom Utah Avalanche Center graphics as a fundraiser. Go to Ebay and search for item320647801970 for photos and to bid.

There are just a few lift tickets left - to Sundance, Wolf Mountain and Brianhead ski resorts – 100% of the sale of these donated tickets goes to support the Utah Avalanche Center.


BOTTOM LINE

Danger by aspect and elevation on slopes approaching 35° or steeper.
(click HERE for tomorrow's danger rating)


Danger Rose Tutorial

The avalanche danger is Level 2 (Moderate) on any steep, mid or upper elevation slope with recent drifts of windblown snow. These sensitive drifts will be most common in areas that received 5 or more inches of new snow. There are still isolated places where a person could trigger a deeper slab avalanche on upper elevation slopes.


CURRENT CONDITIONS

Under clear skies, temperatures remain in the icebox, with most SLC and PC stations in the -13 to -18 F degree range. The “warmer” Ogden and Provo area mountains have readings of – 10 to zero at their mid elevation stations, though I imagine the high elevations of Timpanogos are way colder. The northerly winds are adding insult, with speeds along many of the higher ridges in the 20 to 25 mph range, gusting to 45. Wind chills are close to – 40 F at many locations.

The Monday storm favored Little Cottonwood with up to 16 inches of amazing low density fluff, with 5 to 7 “ in Big and on the Park City side, and the Provo and Ogden area mountains coming in with about 2 inches.


RECENT ACTIVITY

Most of the activity came from where there was the most snow – the Cottonwoods and Park City ridgeline. Intentional soft slabs and sluffs were easy to trigger on steep slopes of just about any aspect, especially where the winds had drifted the snow, with a few naturals observed. Call them class one’s and a few class two’s – ranging from mostly harmless to just large enough to cause injury or bury a person in steep continuous terrain or where there are terrain traps such as gullies. (Photos HERE and HERE).The new snow was running on crusts on the southerly facing slopes, and within the new snow or on small facets at the old snow interface on the shady slopes.


THREAT #1

WHERE PROBABILITY SIZE TREND
      Over the next 24 hours.

With steady, northerly winds overnight, I expect a repeat of the same avalanche activity today – predictable soft wind drifts and sluffs that are sensitive to people. Jumping on wind drifted test slopes will give you a feel for conditions. Some of the wind drifts may be a bit deeper and stiffer today, so they maybe more stubborn and propagate a bit wider than yesterday. Be alert for drifts and slabs on all aspects, due to cross loading by the wind or the simply the wind creating a denser, slabbier layer of snow. Loose snow sluffs will also be easy to trigger on steep slopes, especially those facing northwest through north east.


THREAT #2

WHERE PROBABILITY SIZE TREND
      Over the next 24 hours.

A collapse on a southeasterly facing slope yesterday is a reminder the while the buried surface hoar is laying low for the moment, and easy to forget when you’re making turns in dreamy powder or focused on kicking off small wind slabs, but it’s not gone. Also, the cold temperatures will encourage facet growth and the weakening of the rain and rime crusts in the upper portion of the snow pack, especially where they are near the surface or in shallow snow pack areas. So continue to travel carefully on steep, upper elevation slopes, with good procedures and an escape plan in mind.


MOUNTAIN WEATHER

The strengthening high pressure ridge will bring sunny skies today and a slow warming trend, with temperatures managing to creep back into the single digits at 10,000’ to near 10 degrees F at 8,000’. The northeasterly winds will remain annoying though, in the 10 to 20 mph range with gusts to 25, with the highest ridgelines still averaging 20-30 mph with gusts to 45. The strongest speeds are likely this afternoon. The computer models are showing nothing exciting for the next week - a dry, warming trend through Friday, followed by a series of fast moving waves for the weekend that are not expected to produce much snow. Looking at the very long range, Punxsutawney Phil did not see his shadow this morning, and as the Groundhog Day tradition dictates, an early spring is thus forecast.


GENERAL ANNOUNCEMENTS

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 – Alta Central (801-742-2033)

Ogden – Snowbasin Patrol Dispatch (801-620-1017)

Provo – Sundance Patrol Dispatch (801-223-4150)

Discount Lift tickets: Ski Utah, Backcountry.com, Alta, Deer Valley, Park City, The Canyons, Wolf Mountain, Snowbasin, Beaver Mountain, Brighton, Sundance, and Solitude have donated a limited number of tickets for sale.

Wasatch Powderbird Guides flight plan.

Dawn Patrol Forecast Hotline, updated by 05:30: 888-999-4019 option 8.

Daily observations are frequently posted by 10 pm each evening.

Subscribe to the daily avalanche advisory e-mail click HERE.

UDOT canyon closures UDOT at (801) 975-4838

You have the opportunity to participate in the creation of our own community avalanche advisory by submitting avalanche and snow observations. You can also call us at 801-524-5304 or 800-662-4140, or email by clicking HERE

Donate to your favorite non-profit – The Friends of the Utah Avalanche Center. The UAC depends on contributions from users like you to support our work.

The information in this advisory is from the U.S. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.

We will update this forecast tomorrow morning. Thanks for calling.


This information does not apply to developed ski areas or highways where avalanche control is normally done.  This advisory is from the U.S.D.A. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.


This advisory provided by the USDA Forest Service, in partnership with:

The Friends of the Utah Avalanche Center, Utah Division of State Parks and Recreation, Utah Division of Emergency Management, Salt Lake County, Salt Lake Unified Fire Authority and the friends of the La Sal Avalanche Center. See our Sponsors Page for a complete list.