Forecast: Ogden Area Mountains - Utah Avalanche Center

Forecast for the Ogden Area Mountains

Issued by Trent Meisenheimer on
Sunday morning, April 7, 2024

Today, the avalanche danger is MODERATE across all upper-elevation steep terrain for triggering soft slabs of Wind-Drifted Snow. We also have a MODERATE avalanche danger across all mid and upper-elevation terrain for New Snow avalanches. Here, loose-dry and soft slab avalanches failing within the new storm snow are possible.

The wild card is the strong April sunshine. See the Wet Snow description below.

Low

Moderate

Considerable

High

Extreme

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Do We Let Our Guard Down in the Spring? --- UAC Avalanche Education coordinator McKinley Talty looked at the numbers....and his blog just might surprise you.

Weather and Snow

Under partly cloudy skies, the mountain temperatures remain cold and range from 15-25 °F. The west-northwest wind is currently calm across the upper elevations and only blows at speeds of 5-10 mph.

SLC Area: 8" to 25" snow (0.87-1.67" swe)
Ogden Area: 4" to 10" snow (0.43-1.20" swe)
Provo Area: 2" to 4" snow (0.30-0.38" swe)

Today, we should see partly to mostly cloudy skies. One weather model showed snowfall until 2:00 PM, while another showed no chance of snow. Hopefully the first one is correct and we see light snowfall throughout the morning hours. In either case we are likely to only see a trace to a couple of inches at best. Temperatures will climb into the upper 20s to low 30s °F. Winds will remain from the west-northwest and blow 10-25 mph with gusts into the 20s and 30s.

Recent Avalanches

Yesterday seemed oddly quiet, with very few observations coming through. Ski areas reported sensitive soft slab avalanches failing within the new snow on density changes.

Type

Location

Likelihood

Size

Description

For the past 24 hours, the west-northwest wind has been blowing at perfect loading speeds of 10-25 mph. Because of this, you can expect soft slabs of wind-drifted snow across the upper elevation ridgelines and on lee slopes. Be on the lookout for snow that looks pillowy, rounded, or wavy, and avoid those areas, as they are likely wind slabs.

Type

Location

Likelihood

Size

Description

Loose-dry avalanches (sluffs) will be easily initiated in steep terrain. With all the slick and hard underlying surfaces I would expect loose-dry avalanches to run fast and far and could pack a punch.

You will also want to be on guard for soft slab avalanches failing on or at the old snow surface or within the new storm snow itself (density changes). Soft slabs of new snow are usually more sensitive during high precipitation periods which is now over. Therefore you need to determine how the new snow is settling and bonding.

Shovel tilt tests, small test slopes, and slope cuts should be in your bag of tricks today. Work through the terrain, make conservative choices, and watch your sluffs.

Trend: Decreasing Danger

Type

Location

Likelihood

Size

Description

I am not adding a danger rating for this problem since it will depend completely on cloud cover and sunshine. The mountain temperatures are forecast to be cold with cloud cover and wind, so I have no clue if the sun will come out or if the new snow will be affected by warming.

It's April, and the sun is strong. All it takes is a few minutes of strong sunshine to warm the cold snow and instantly turn it wet and unstable. We can go from LOW danger to HIGH danger in a matter of minutes. Wet-loose avalanches in long steep sustained terrain can become very large and dangerous, especially with a very hard bed surface for them to run on. This time of year Wet Snow should be in the back of your mind every day.

General Announcements

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

Observations and Avalanches

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