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Avalanche Danger Rose: this graphic represents an avalanche forecaster's idea of how the avalanche danger exists across the topography in a given region. It is not a map...it is an idea. Picture it as a cone-shaped mountain viewed from above, built of three elevation bands; the outer ring represents low elevations, the middle ring represents middle elevations, and the innermost circle represents high elevations. Each elevation band is divided into sectors that represent the slope aspect (N-NE-E-SE-S-SW-W-NW). Each sector\'s color represents the avalanche danger rating assigned that day (see Avalanche Danger Scale).

In this example, the Avalanche Danger Rose depicts an avalanche danger rating of considerable on all high elevation aspects and on north to west-facing mid elevations; all other sectors possess moderate avalanche danger. The illustration depicts the spatial distribution of this forecast across a landscape.
X Loose Wet: Loose wet avalanches release at a point and spread downhill in a conical fashion. They occur where water is running through the snowpack, and release at or below the trigger point. They can be deadly on steep and/or treed slopes and around terrain traps such as cliffs and gullies.
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X
Avalanche Problem Rose: this graphic represents an avalanche forecaster's idea of the distribution of a particular avalanche problem across the topography in a given region. Picture it as a cone-shaped mountain viewed from above, built of three elevation bands; the outer ring represents low elevations, the middle ring represents middle elevations, and the innermost circle represents high elevations. Each elevation band is divided into sectors that represent the slope aspect (N-NE-E-SE-S-SW-W-NW). Sectors colored grey are thought to have the identified avalanche problem while white sectors do not.

In this example, the Avalanche Problem Rose indicates that a particular avalanche concern exists on all high elevation aspects and on north to west-facing mid elevations and that this concern is far less likely to be encountered on other aspects and elevations.
X Chance of Avalanches: This graphic depicts how likely you are to trigger avalanches or encounter natural avalanches while traveling on avalanche prone slopes. Unlikely means that few avalanches could be triggered in avalanche terrain and natural avalanches are not expected. The chance of triggering or observing avalanches increases as we move up the scale. Certain means that humans will be able to trigger avalanches on many slopes, and natural avalanches should be expected.
X Size of Avalanches: This graphic depicts the potential size and destructive force of expected avalanches. Small avalanches are not large enough to bury humans and are relatively harmless unless they carry people over cliffs or through trees or rocks. Moving up the scale, avalanches become large enough to bury, injure, or kill people, large enough to bury or destroy vehicles and break a few trees, and large enough to destroy railway cars, buildings, or a substantial amount of forest. Historic avalanches are massive events capable of destroying villages and gouging or altering the landscape.
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LOW: Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.

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MODERATE: Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

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CONSIDERABLE: Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.

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HIGH: Very dangerous avalanche conditions. Travel in avalanche terrain is not recommended.

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EXTREME: Avoid all avalanche terrain.

Current Advisory
February 11, 2016 7:30 am by Matt Wieland

All Zones | Sawtooth Mountains | Smoky & Boulder Mountains | Wood River Valley | Soldier Mountains

 

Sawtooth Mountains

Bottom Line: The avalanche danger will rise to MODERATE on steep, sunny slopes during the day. Sun and continued warm temperatures will weaken surface snow and loose wet avalanches may be possible in steep terrain. The danger is LOW on shaded upper and middle elevation slopes and at all lower elevations.

Primary Avalanche Problem

Loose Wet   

Aspect/Elevation   

Certain
Unlikely

Chance of Avalanches   

Historic
Small

Size of Avalanches   

Today the primary concern will be loose wet avalanches on steep, sunny slopes. This zone received a solid freeze overnight that firmed any wetter surface snow and will keep the danger low this morning. Thick crusts have formed in many areas and it will take some time for this snow to break down and become a hazard. Today, the danger starts low but will increase and follow the sun (when it breaks through any clouds) around the compass. The danger rises on easterly slopes in the morning, southerly slopes in the afternoon, and westerly slopes in the late afternoon. Most of the prime loose wet avalanche real estate slid naturally the past few days (photo) and what's left may need a bit of a nudge (you) to get going. Once surface crusts start breaking down and the snow becomes wet, it may be time to head to more shaded areas. Any cloud cover will help to diminish surface warming. Pinwheels and rollerballs are tell-tale signs that the surface snow is loosening.

Additional Discussion:
Wind slabs formed last weekend during moderate northwest wind. Recent slab avalanches have been reported on east and southeast-facing slopes including a large slab avalanche that was likely triggered by a falling cornice earlier in the week. Following this pattern, continue to travel cautiously on very steep, wind-loaded east and southeast-facing terrain.

Weather Forecast

Sawtooth Mtns at 9,200'

Last Night
Recorded Past 24 Hours

Today
Expected Through 5pm

Tonight
Expected 5pm - 5am

Temperature

32 F 43 F 23 F

Sky Cover

Mostly Cloudy Partly Cloudy Mostly Cloudy

Wind Speed

Light Light Light

Wind Direction

W W W

Snowfall

0" 0" 0"

Avalanche Notes

Enter text...

Mountain Weather Summary

Yesterday, temperatures reached the upper 30s to low 40s F, skies were mostly clear, and a light wind blew from the west. Last night under clear skies, temperatures dropped to at or just below freezing for all areas except the mountains near Ketchum. All valley locations once again fell below freezing for most of the night.

Today will be quite similar to previous days. Mountain temperatures will once again rise to the low 40s F under party cloudy skies and light west wind. Tonight, temperatures should again fall to near or below freezing for a good portion of the night. Friday looks to be slightly cooler during the day and our dry spell should hopefully end during the weekend.

Sawtooth Mountains

Sawtooth Mtns at 9,200'

Last Night
Recorded Past 24 Hours

Today
Expected Through 5pm

Tonight
Expected 5pm - 5am

Temperature

32 F 43 F 23 F

Sky Cover

Mostly Cloudy Partly Cloudy Mostly Cloudy

Wind Speed

Light Light Light

Wind Direction

W W W

Snowfall

0" 0" 0"

Smoky & Boulder Mountains

Titus Ridge at 10,000'

Last Night
Recorded Past 24 Hours

Today
Expected Through 5pm

Tonight
Expected 5pm - 5am

Temperature

29 F 42 F 27 F

Sky Cover

Partly Cloudy Partly Cloudy Mostly Cloudy

Wind Speed

Light Light Light

Wind Direction

W W W

Snowfall

0" 0" 0"
           

Wood River Valley

Baldy at 9,000'

Last Night
Recorded Past 24 Hours

Today
Expected Through 5pm

Tonight
Expected 5pm - 5am

Temperature

35 F 43 F 31 F

Sky Cover

Partly Cloudy Partly Cloudy Mostly Cloudy

Wind Speed

Moderate Light Light

Wind Direction

NW W W

Snowfall

0" 0" 0"
   

Soldier Mountains

Peak 2 at 9,000'

Last Night
Recorded Past 24 Hours

Today
Expected Through 5pm

Tonight
Expected 5pm - 5am

Temperature

32 F 42 F 32 F

Sky Cover

Partly Cloudy Partly Cloudy Mostly Cloudy

Wind Speed

Strong Moderate Moderate

Wind Direction

NW NW NW

Snowfall

0" 0" 0"
           

General Information

We need your observations! Please let us know what you're seeing in the backcountry, especially if you see or trigger any avalanches. You can email us photos and observations at info@sawtoothavalanche.com, fill out the Observations form on our website, or leave a message at 208-622-0095.