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Forecast for the Logan Area Mountains

Toby Weed
Issued by Toby Weed on
Tuesday morning, March 16, 2021
The snow is stable in most areas, avalanches are unlikely, and the danger is LOW in the backcountry. Warm daytime temperatures will cause increasing danger of wet avalanches, and if you start sinking into saturated snow, it's time to avoid travel on or under steep slopes. Although unlikely, larger avalanches failing on a deeply buried sugary persistent weak layer remain possible in isolated very steep terrain, and warming later this week could cause rising danger.
USE NORMAL CAUTION
Low
Moderate
Considerable
High
Extreme
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Special Avalanche Bulletin
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Weather and Snow
It's 31°F this morning at the 8400' Tony Grove Snotel, and there is 68 inches of total snow containing 80% of normal SWE. It's 25°F and north winds are currently blowing around 10 mph at the 9700' CSI Logan Peak weather station. We're expecting partly sunny skies today, with a good chance of some snow this afternoon, although not much accumulation is expected. High temperatures at 9000' will be around 35°F, and moderate easterly winds will blow along the ridges. Daytime temperatures will increase a bit each day, and we'll see fair spring weather conditions in the northern mountains through the end of the work week. Guidance is coming into better agreement regarding a storm system for this weekend, with a good chance for some significant snow in the Logan Zone, probably starting late Friday night and lasting through Saturday.

We are finding stable snow conditions and generally Low avalanche danger in the backcountry. Stability has improved significantly since February on slopes with deep deposits of drifted snow, even in areas where extensive natural deep slab avalanches occurred.
We found stable snow conditions and Low avalanche danger in Wood Camp Hollow (3-12-2021).

However, areas with poor snow structure and dry weak sugary or faceted snow can still be found where the snowpack is thin, (around 3' deep or less), on the north side of the compass, on windward and mid-elevation slopes, slopes with grass and bushes showing, and in rocky, shallow terrain. Although unlikely, there is still a possibility that a person could trigger a dangerous avalanche on a very steep isolated slope in the Logan Zone.
Paige found weak sugary snow, poor snow structure, and propagation in snow stability tests in shallower snow in the Beaver Mountain Backcountry (3-13-2021).
As daytime temperatures rise, softening the snow, the danger of wet avalanches will increase, so its a good idea to get in the habit of an early start and to plan on heading down before things get too sloppy.

Recent Avalanches
  • -It's been over two weeks since any human triggered or natural avalanches failing on our nasty widespread buried persistent weak layer occurred. See Twitter Post
  • -Some large wet avalanches occurred on slopes facing the southern half of the compass with the warm-spell in early March.
  • -A very extensive natural avalanche cycle occurred in mid February, and evidence is still apparent across the Logan Zone including deep crown lines, large chunks, woody debris and very long piles of avalanche deposition.
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Avalanche Problem #1
Normal Caution
Type
Location
Likelihood
Size
Description
  • Although suspect persistent weak layers appear to be dormant, the sugary faceted snow near the ground will probably continue to be devious on some slopes. Dangerous avalanches, 2 to 4 feet deep probably remain possible for people to trigger on very steep isolated slopes, in rocky terrain, and on outlying drifted slopes with generally thin snow cover. Warming conditions later in the week may cause an increase in potential for avalanches running on a persistent weak layer or wet slab avalanches in some isolated very steep terrain.
  • Warm daytime temperatures will soften the snow and cause a rising danger of wet avalanches on some slopes in the heat of the day. It's probably a good idea to get into the springtime habit of early departures, so you can be heading down out of avalanche terrain before the snow gets too soft. Watch for trees or other terrain traps below you if you venture onto steep slopes.
Additional Information
Do you have the essential avalanche rescue gear (transceiver, probe, and shovel) and do you know how to use them? Watch this video to see how the three pieces of equipment work together. HERE
Please keep practicing with the Beacon Training Park at the Franklin Basin Trailhead. Test yourself and your riding partners. It is free, fun, and easy to use.
General Announcements
Allen Foss of Preston, ID was killed in an avalanche Saturday, February 20, near Sherman Peak. Please consider supporting the Foss family during this difficult time. HERE
Visit this website with information about Responsible Winter Recreation by the Utah Office of Outdoor Recreation.
EMAIL ADVISORY. If you would like to get the daily advisory by email you subscribe HERE.
Remember your information can save lives. If you see anything we should know about, please help us out by submitting snow and avalanche observations....HERE. You can also call us at 801-524-5304, email by clicking HERE, or include #utavy in your Instagram, or @UAClogan on Twitter.
We will update this forecast by around 7:30 tomorrow morning.
This forecast is from the USDA Forest Service, which is solely responsible for its content. The forecast describes general avalanche conditions and local variations always occur.