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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.
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X
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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.

Advisory Archive - All Zones
Monday March 30, 2015 7:30 am by Brad Carpenter

Last Seven Days | Last Thirty Days | This Season | All Years | Danger Scale

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

 

Not The Current Advisory

Sawtooth Mountains

Bottom Line: The avalanche danger is MODERATE on sun affected slopes at all elevations and at lower elevations on shaded slopes. Small loose wet avalanches could be triggered by skiers and riders in steep, rocky areas as the day heats up. On shadier aspects at middle and upper elevations it may be possible to trigger small loose dry avalanches or very small pockets of wind slab.

Smoky & Boulder Mountains

Bottom Line: The avalanche danger is MODERATE on sun affected slopes at all elevations and at lower elevations on shaded slopes. Small loose wet avalanches could be triggered by skiers and riders in steep, rocky areas as the day heats up. On shadier aspects at middle and upper elevations it may be possible to trigger small loose dry avalanches or very small pockets of wind slab.

Wood River Valley

Bottom Line: The avalanche danger is MODERATE on sun affected slopes at all elevations and at lower elevations on shaded slopes. Small loose wet avalanches could be triggered by skiers and riders in steep, rocky areas as the day heats up. On shadier aspects at middle and upper elevations it may be possible to trigger small loose dry avalanches or very small pockets of wind slab.

Soldier Mountains

Bottom Line: We are no longer issuing daily avalanche forecasts for the Soldier Mountains due to poor access to terrain. Please refer to neighboring zones for additional information.

Avalanche Notes

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Mountain Weather Summary

Yesterday was another stunner of a day! Clear skies and light winds coupled with daytime highs into the low 50's F made for an exceptional time to be in the hills and mountains.

Overnight the temperatures dropped into the low to mid 30's F at middle and upper elevations. The wind remained light from the WNW, no precipitation was recorded and the skies stayed mostly clear.

For today we should see temperatures in the mid to upper 50's F in the mountains. Valley locations will see highs in the 60's to 70's F. The wind will be light from the WNW and no precipitation is expected under clear blue skies.

Sawtooth Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

30 F 55 F 35 F

Cloud Cover

Partly Cloudy Clear Partly Cloudy

Ridgetop Wind Speed

Light Light Light

Wind Direction

NW W SW

Snowfall

24hr: 0" 12hr: 0"
0" 0"

Smoky & Boulder Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

30 F 55 F 35 F

Cloud Cover

Partly Cloudy Clear Partly Cloudy

Ridgetop Wind Speed

Light Light Light

Wind Direction

NW W S

Snowfall

24hr: 0" 12hr: 0"
0" 0"

Wood River Valley

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

30 F 55 F 35 F

Cloud Cover

Partly Cloudy Clear Partly Cloudy

Ridgetop Wind Speed

Light Light Light

Wind Direction

NW W S

Snowfall

24hr: 0" 12hr: 0"
0" 0"

Soldier Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

30 F 55 F 35 F

Cloud Cover

Partly Cloudy Clear Partly Cloudy

Ridgetop Wind Speed

Moderate Light Light

Wind Direction

W W SE

Snowfall

24hr: 0" 12hr: 0"
0" 0"