Avalanche Advisory
Advisory: Logan Area Mountains Issued by Toby Weed for Tuesday - March 3, 2015 - 6:55am
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Heightened avalanche conditions exist in the backcountry, there's a MODERATE (level 2) danger, and triggered storm snow avalanches are possible on many slopes steeper than about 30 degrees. Significant additional snow is possible today, along with sustained northwest wind, and dangerous avalanche conditions may develop. The danger could easily rise to CONSIDERABLE (level 3) at upper elevations, especially on drifted slopes.

  • Triggered avalanches may become likely and natural avalanches are possible, especially during periods of heavy snowfall.
  • Avoid steep slopes with recent deposits of drifted snow and freshly built-out cornices on the major ridge lines.
  • Careful snowpack evaluation, cautious route-finding, and conservative decision making will be essential for backcountry travel today.

special announcement

****Special thanks to Buttar's of Tremonton and ArcticCat for hooking us up with the light and powerful M8000, which is featured in UAC Logan's Practicing Companion Rescue video........HERE

current conditions

The Tony Grove Snotel reports 6 inches of new snow and 0.4" of water in the last 24 hours. There's 74 inches of total snow containing 93% of average water for the date, and it's 20 degrees at 8400 feet. It's 21 degrees at the UDOT Hwy 89 Logan Summit weather station, with west-northwest wind sustaining wind speeds in the teens and gusting into the twenties overnight. Heightened avalanche conditions exist in the backcountry, and with several inches of accumulation possible and sustained northwest wind forecast, dangerous storm snow avalanche conditions could well develop at upper elevations during the day today.

A gargoyle of drought, a remnant stump of the 1994 Beaver Fire leering over the Bear River Range. 3-1-2015

recent activity

No avalanches were reported locally since the first week of February, but I've noticed some small natural wind slab releases in obviously drifted areas.

Small wind slab release visible from a distance on an obviously drifted slope down wind from a perfect fetch area in Amazon Basin. 3-1-2015

***Visit our Backcountry Observations Page for more local information and from across the state.

Avalanche Problem 1
type aspect/elevation characteristics
over the next 24 hours

Expect a rising avalanche danger in the backcountry with several more inches of accumulating snow possible today. The suspect weak layer was on the surface this weekend. The thin layer of nice re-crystallized powder on the solid underlying crust will likely become an active weakness with a significant load of new snow. Storm slab avalanches will become more likely and the danger more widespread as more snow piles up. Natural avalanches are possible during periods of especially heavy snowfall. Even small or shallow avalanches could run far and fast on solid and slick bed surfaces. Avoid freshly built cornices and wind deposited snow on the lee side of ridges, in and around terrain features like gullies and cliff bands, and areas where snow is vertically cross-loaded near sub-ridges, roll-overs, or scoops lower on the slope.


Snow showers will continue today, with 5 to 9 inches of additional accumulation possible. Expect high temperatures at 8500 feet around 19 degrees and sustained northwest winds in the 15 to 20 mph range on the ridges. Scattered showers will continue tonight, but little accumulation is expected. Tonight's low temperature will drop to around 3 degrees, plunging the wind chill down to around -15 degrees, it'll be mostly cloudy with a 10 to 20 mph north wind. It'll be mostly sunny tomorrow with a high of around 18 degrees and moderate north winds.

***Check out our one-stop weather page........HERE

general announcements

***Advisories by email for the Logan Zone.  Go here for details.

*** Utah Avalanche Center mobile app 

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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!

***Please submit snow and avalanche observations from your ventures in the backcountry HERE. You can call us at 801-524-5304 or email HERE, or include #utavy in your Instagram or Tweet us @UAClogan. To report avalanche activity in the Logan Area or to contact the local avalanche forecaster call me, Toby, at 435-757-7578. 

I'll regularly update this advisory on Monday, Wednesday, Friday, and Saturday mornings by about 7:30.   This advisory is produced by the U.S.D.A. Forest Service, which is solely responsible for its content. It describes only general avalanche conditions and local variations always exist.