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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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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 Summary
Saturday February 25, 2017 7:30 am by Matt Wieland

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

Sawtooth Mountains

Bottom Line: The danger is MODERATE at upper and middle elevations. It’s possible to trigger wind slabs that formed over the past several days and potentially new ones that form later today. Wind slabs will be thicker as you gain elevation and travel in more exposed terrain. Loose dry avalanches are possible in very steep sheltered terrain. The danger is LOW at low elevations where only isolated areas of unstable snow exist. Watch for potentially changing conditions later in the day as wind speeds increase. ...MORE

Smoky & Boulder Mountains

Bottom Line: The danger is MODERATE at upper and middle elevations. It’s possible to trigger wind slabs that formed over the past several days and potentially new ones that form later today. Wind slabs will be thicker as you gain elevation and travel in more exposed terrain. Loose dry avalanches are possible in very steep sheltered terrain. The danger is LOW at low elevations where only isolated areas of unstable snow exist. Watch for potentially changing conditions later in the day as wind speeds increase. ...MORE

Wood River Valley

Bottom Line: The danger is MODERATE at upper and middle elevations. It’s possible to trigger wind slabs that formed over the past several days and potentially new ones that form later today. Wind slabs will be thicker as you gain elevation and travel in more exposed terrain. Loose dry avalanches are possible in very steep sheltered terrain. The danger is LOW at low elevations where only isolated areas of unstable snow exist. Watch for potentially changing conditions later in the day as wind speeds increase. ...MORE

Soldier Mountains

Bottom Line: The danger is CONSIDERABLE at upper elevations. Strong wind and recent fresh snow has formed slabs near ridges and exposed areas. It’s likely for riders and skiers to trigger wind slabs in exposed terrain. At middle and low elevations, wind deposits are less widespread and not as thick and the danger is MODERATE. ...MORE

Mountain Weather Summary

Yesterday, the mountains looked to have picked up 1-3” of new snow. Remote weather station snow sensors have become unreliable in certain areas and some new snow amounts are only estimates. Temperatures rose to the teens F with Baldy reaching 26 F in the early afternoon. Wind blew light from the west and skies were overcast to obscured before dissipating some in the afternoon. Overnight, cloud cover diminished and temperatures dropped to at or just below 0 F.

Today, no moisture should enter the area, temperatures will only reach the teens F, and skies should be mostly sunny. Light to moderate NW wind should blow on ridge tops except for the Soldiers where moderate to strong wind will prevail. There should be a slight increase in wind velocities in the early afternoon. Overnight, temperatures stay above zero but only in the single digits, ridgetop wind will be moderate from the NW-W, and clouds will increase into Sunday morning.

Avalanche Notes

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Mountain Weather Summary

Yesterday, the mountains looked to have picked up 1-3” of new snow. Remote weather station snow sensors have become unreliable in certain areas and some new snow amounts are only estimates. Temperatures rose to the teens F with Baldy reaching 26 F in the early afternoon. Wind blew light from the west and skies were overcast to obscured before dissipating some in the afternoon. Overnight, cloud cover diminished and temperatures dropped to at or just below 0 F.

Today, no moisture should enter the area, temperatures will only reach the teens F, and skies should be mostly sunny. Light to moderate NW wind should blow on ridge tops except for the Soldiers where moderate to strong wind will prevail. There should be a slight increase in wind velocities in the early afternoon. Overnight, temperatures stay above zero but only in the single digits, ridgetop wind will be moderate from the NW-W, and clouds will increase into Sunday morning.

Sawtooth Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

2 F 17 F 8 F

Cloud Cover

Partly Cloudy Partly Cloudy Increasing

Ridgetop Wind Speed

Light Moderate Moderate

Wind Direction

W NW W

Snowfall

24hr: 1-2" 12hr: 0"
0" Trace"

Smoky & Boulder Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

-6 F 11 F 2 F

Cloud Cover

Partly Cloudy Partly Cloudy Increasing

Ridgetop Wind Speed

Light Moderate Moderate

Wind Direction

W NW NW

Snowfall

24hr: 1-2" 12hr: 0"
0" Trace"
           

Wood River Valley

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

2 F 16 F 5 F

Cloud Cover

Clear Partly Cloudy Increasing

Ridgetop Wind Speed

Light Moderate Light

Wind Direction

W NW NW

Snowfall

24hr: 1-3" 12hr: 0"
0" 0"
   

Soldier Mountains

Last Night
5PM - 5AM

Today
5AM - 5PM

Tonight
5PM - 5AM

Temperature

-2 F 12 F 4 F

Cloud Cover

Partly Cloudy Partly Cloudy Increasing

Ridgetop Wind Speed

Strong Strong Strong

Wind Direction

NW NW NW

Snowfall

24hr: 1-2" 12hr: 0"
0" 0"
           

General Information