Avalanche Advisory
Advisory: Provo Area Mountains Issued by Greg Gagne for Friday - April 14, 2017 - 6:43am
bottom line

LOW avalanche hazard. Isolated pockets of wind drifts are possible in the upper elevations, and if the skies do clear and winds are light, small loose wet slides are possible on solar aspects.




special announcement

Great news… so far there haven’t been any avalanche fatalities in Utah this winter! It has been 26 years since we’ve had a fatality-free winter. Let’s keep it that way and stay safe this spring. Our goal is for everyone to enjoy the Greatest Snow on Earth and come home safe every day.

The final regular advisory will be this Sunday, April 16. For the rest of the month we'll issue Friday updates for the central Wasatch Mountains and updates any time there is measurable snowfall; however, we will discontinue issuing avalanche danger ratings after Sunday.

Although we will be shutting down regular operations, we will continue to post observations through the end of the month as we receive them, so please do continue to send them to us. You can check the latest observations here. We also follow avalanche-related activity on Instagram - be sure to tag your photos with #utavy .

current conditions

A dry cold front moved through the Provo mountains at about 8 pm last evening, quickly dropping mountain temperatures in its wake. Temperatures this morning range throughout the upper 20's F and winds are out of the west/northwest and light, gusting in the mid teens at upper elevations. Skies are mostly cloudy.

The snow surface has frozen with the dropping temperatures, and is locked up tightly this morning.

The screenshot is from the Alta Guard weather station in Little Cottonwood Canyon, showing the arrival of the cold front last evening and the temperature drop.


Week in Review [Detailed Version]

A storm system entered the region this past weekend, with warm temperatures and a high rain/snow line on Saturday April 8th.

A cold front with an ample moisture supply late Saturday night and well into the day on Sunday provided nearly 18-24" in the Cottonwoods and Ogden mountains, with 8-15" along the Park City ridgeline. The Provo mountains recorded 3-6". Limited avalanche activity was reported with this storm, with a few slides breaking at a graupel interface of the old snow surface, or within a density inversion within the storm snow.

Monday brought clearing skies, but cool temperatures kept wet activity to a minimum.

A short-duration wind event on Tuesday morning created pockets of wind drifts in isolated terrain, and a wind slab avalanche was triggered by a party of skiers hiking uphill at Snowbird Ski Resort. Another small wind drift was triggered in White Pine in Little Cottonwood canyon.

Warming temperatures highlighted Wednesday and Thursday, but wet activity was minimal.

A dry cold front entered the region Thursday evening, providing a solid refreeze of the snowpack by Friday morning.

recent activity

No avalanche activity was reported other than minor wet loose activity.

Avalanche Problem 1
type aspect/elevation characteristics
LIKELIHOOD
LIKELY
UNLIKELY
SIZE
LARGE
SMALL
TREND
INCREASING DANGER
SAME
DECREASING DANGER
over the next 24 hours
description

A Low hazard is forecasted for today, but a few things to watch for:

- You may find isolated pockets of wind drifts at the upper elevations. Although these are likely to be shallow and not that widespread, consider the consequences of triggering one of these drifts in steep, unforgiving terrain.

- Cool temperatures and cloudy skies should limit warming of the snow surface today, but if the skies do clear more than forecasted and winds are light, small loose wet slides are possible.

- Although not an avalanche problem, it will be hard to arrest from any falls on steep terrain with a frozen snow surface.

The snow will be slow to soften today, and may not soften much, if at all. If skies do clear and the winds remain light, semi-soft corn conditions may be found this afternoon on wind-sheltered, mid elevations facing south and west.

weather

Temperatures are forecasted to remain cool today, rising to just above freezing at 8000' and about 20 F. at 10,000' Winds will be out the west and will be generally light, with some gusts in the teens and 20's mph at the mid and upper elevations. Skies will remain partly to mostly cloudy this morning, with partial clearing this afternoon. A reinforcing shot of colder air will lead to a colder night tonight, with temperatures dropping into the low and mid teens F.

For those seeking corn on Saturday, you probably won't have to set the alarm too early.

general announcements

Remember your information can save lives. If you see anything we should know about, please help us out by submitting snow and avalanche conditions. You can also call us at 801-524-5304, email by clicking HERE, or include #utavy in your tweet or Instagram.

To get help in an emergency (to request a rescue) in the Wasatch, call 911. Be prepared to give your GPS coordinates or the run name. Dispatchers have a copy of the Wasatch Backcountry Ski map.

Backcountry Emergencies. It outlines your step-by-step method in the event of a winter backcountry incident.

If you trigger an avalanche in the backcountry, but no one is hurt and you do not need assistance, please notify the nearest ski area dispatch to avoid a needless response by rescue teams. Thanks.

EMAIL ADVISORY If you would like to get the daily advisory by email you will need to subscribe here.

DAWN PATROL Hotline updated daily by 5-530am - 888-999-4019 option 8.

TWITTER Updates for your mobile phone - DETAILS

UDOT canyon closures: LINK TO UDOT, or on Twitter, follow @UDOTavy, @CanyonAlerts or @AltaCentral

Utah Avalanche Center mobile app - Get your advisory on your iPhone along with great navigation and rescue tools.

Powderbird Helicopter Skiing - Blog/itinerary for the day

Lost or Found something in the backcountry? - http://nolofo.com/

Ski Utah mobile snow updates

To those skinning uphill at resorts: it is critical to know the resort policy on uphill travel. You can see the uphill travel policy for each resort here.

Benefit the Utah Avalanche Center when you shop from Backcountry.com or REI: Click this link for Backcountry.com or this link to REI, shop, and they will donate a percent of your purchase price to the UAC. Both offer free shipping (with some conditions) so this costs you nothing!

Benefit the Utah Avalanche Center when you buy or sell on ebay - set the Utah Avalanche Center as a favorite non-profit in your ebay account here and click on ebay gives when you buy or sell. You can choose to have your seller fees donated to the UAC, which doesn't cost you a penny.

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