Use this page to view archived advisories. The table below shows the overall danger rating and the bottom line for the 20 most recent advisories. Click on the time and date link above each danger rating icon to view the full advisory for that day. Use the date chooser or the pager at the bottom to scroll through the older advisories.

E.g., Thursday, June 21, 2018
E.g., Thursday, June 21, 2018
E.g., Thursday, June 21, 2018
Date the advisory was published:sort descending
Click here to see the full advisory for 2018-02-13
February 13, 2018 at 6:59

The cold front that has swept through the region has done a good job of locking up the snowpack and increasing stability.  The gusty winds we've been having created isolated windslabs on leeward aspects near our ridgelines.  Heads up for the new storm coming in starting tonight, with the potential for over a foot of new snow to fall on a potentially slick bed surface.  

Advisory
Click here to see the full advisory for 2018-02-16
February 16, 2018 at 5:34

Expect avalanche danger to change rapidly going into the weekend with strong winds and heavy snowfall forecasted for Saturday and Sunday.   This new snow will be falling on a multitude of weak layers that will take multiple days to settle and strengthen.

Advisory
Click here to see the full advisory for 2018-02-16
February 16, 2018 at 6:59

The weekend is about to roll in with a bang weather wise.  Going into Friday morning with an overall fairly stable snowpack, but the snow accumulation is going to ramp up throughout the day today and not stop until Sunday night.  Storm totals could exceed 4 feet in areas and will be accompanied by strong winds.  Expect the avalanche danger to increase throughout Saturday and Sunday.  Significant snowfall and strong winds are two of the avalanche red flags. 

Advisory
Click here to see the full advisory for 2018-02-16
February 16, 2018 at 7:31

Currently 10 inches of recent storm snow sitting atop an ice crust.  There is some wind affect and slight suncrust on top of the current surface.  A series of storms will be rolling in with breezy conditions forming wind slabs and loading on Noreasterly aspectsAvalanche danger will be on the rise throughout the weekend with the brunt of the storm coming in Saturday.  Red flags will be heavy precipitation and winds.  

Advisory
Click here to see the full advisory for 2018-02-20
February 20, 2018 at 5:09

Sensitive storm snow and wind slabs are resting on a layer of weak facets and a slick bed surface.  Steep terrain (over 30°) should be avoided on all aspects and elevations until this new snow has had time to settle and strengthen.

Advisory
Click here to see the full advisory for 2018-02-20
February 20, 2018 at 6:53

After a week of good snow and strong winds we'll be hanging out in a cold high pressure for the next 24 hours. There was a lot of reverse loading above treeline and near ridges. Areas that are normally thought of as leeward slopes may have newly formed wind slabs on them.  We're getting initial information about a snowmobile triggered avalanche in Echo bowl yesterday. No details yet... Stay safe out there!

Advisory
Click here to see the full advisory for 2018-02-20
February 20, 2018 at 6:57

The storm slabs and wind slabs from the President's Weekend storms are still working on stabilizing after such a big and rapid load.  Most areas are resting on a layer of weak facets and the slick rain crust sliding surface. When headed into the backcountry, use careful snowpack evaluation, cautious route-finding and conservative decision making. 

Advisory
Click here to see the full advisory for 2018-02-22
February 22, 2018 at 18:54

Snowpack is consolidating with light powder on the surface where it is not wind affected.  Assess upper elevation ridgetops and wind affected areas greater than 35 degrees as it is highly variable.  

Advisory
Click here to see the full advisory for 2018-02-22
February 22, 2018 at 18:54

Snowpack is consolidating with light powder on the surface where it is not wind affected.  Assess upper elevation ridgetops and wind affected areas greater than 35 degrees as it is highly variable.  

Advisory
Click here to see the full advisory for 2018-02-23
February 23, 2018 at 5:13

The wind slabs and weak layers under last weekends' storm snow have strengthened significantly this week. The potential still exists to trigger an avalanche in these variable wind deposits and stubborn weak layers. Use caution in steep terrain, particularly on Southwesterly aspects.  Weather forecasts are predicting significant storm snow Saturday thru Sunday so expect avalanche danger to potentially rise with new snow and wind.

Advisory
Click here to see the full advisory for 2018-02-26
February 26, 2018 at 21:44

New storm snow and strong Southwesterly winds have created sensitive slabs in steep terrain above 5,000' on all aspects.  Use caution on steep slopes until this new snow has had time to settle and strengthen.

Advisory
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 6:52

The new snow across the Selkirk and Cabinet mountains have made for some powdery conditions! Be aware of soft slab potential near and above treeline. The light snow on the surface isn't a big concern right now, but we're looking at 15-20'' more by this weekend. As more snow falls, your internal 'red light' should be getting brighter. Expect the avalanche danger to increase over the next couple days.

Advisory
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 7:00

The region recieved a substantial amount of new snow and high winds over the weekend, over 20 inches in most places. We saw extensive windslab development in the higher elevations. Yesterday was a brief respite from those winds, but overnight they picked up to transport speed again and will be accompanied by another shot of precipitation today.  Expect sensitive windslabs on leeward aspects and allow time for the storm slabs to stabilize.  

Advisory
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 8:16

New storm snow and strong Southwesterly winds have created sensitive slabs in steep terrain above 5,000' on all aspects.  Use caution on steep slopes until this new snow has had time to settle and strengthen.

Advisory
Click here to see the full advisory for 2018-03-01
March 1, 2018 at 21:07

Stability issues from wind effected snow will be your main concern today.  Mountains picked up a couple inches.  Temperatures in the mountains remained below freezing and surface snow will be easily transported by the forecast winds today and tonight.  New snow is expected and this will also add to stress on windloaded aspects.  You'll find good traveling in most terrain but remain cautious of steep lee aspects with cornice formation and sparse vegetation to protect from triggering unstable wind slabs.

Advisory
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 4:42

The moderate temperatrures and lack of addtional loading has allowed the upper snowpack to strengthen significantly since last weekends storm. Triggering a windslab on leeward terrain at treeline and above is still a possibility. The facet layer above the February 4th rain crust is also healing but still harbors the potential to be triggered and should be given consideration in steep and open terrain above treeline.

Advisory
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 6:53

A series of small storms has been tracking across the Silver Valley, depositing a few inches yesterday and last night.  The smaller amounts in these storms accompanied by steady moderate temperatures have allowed these layers to bond, but have provided new fuel for windloading each day.  Expect windslab formation at the ridgelines. 

Advisory
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 6:54

Stability issues from wind effected snow will be your main concern today.  Mountains picked up a couple inches.  Temperatures in the mountains remained below freezing and surface snow will be easily transported by the forecast winds today and tonight.  New snow is expected and this will also add to stress on windloaded aspects.  You'll find good traveling in most terrain but remain cautious of steep lee aspects with cornice formation and sparse vegetation to protect from triggering unstable wind slabs.

Advisory
Click here to see the full advisory for 2018-03-06
March 6, 2018 at 5:29

Mild temperatures and a lack of wind have stabilized the upper snowpack. Use caution in steep, high consequence terrain on all aspects where loose-dry sloughing could cause a loss of control. Also keep in mind the potential to trigger deep weaknesses in the Purcell Range where the snowpack is thinner and potentially more sensitive to triggers.

Advisory
Click here to see the full advisory for 2018-03-06
March 6, 2018 at 6:20

The Cabinets and Selkirk mountains have been getting light density snow over the past 48 hours.  Scroll down to the avalanche problems to see what we're saying about the avalanche danger.  IPAC sends it's condolences to the friends and families of the avalanche victims in Washington state.  We're sad to report, 6 people have lost their lives in avalanches in Washington over the past week.  Know what avalanche terrain is and practice safe travel techniques.

Advisory
Click here to see the full advisory for 2018-03-06
March 6, 2018 at 6:57

Small storms, light winds, and mild temperatures have helped stabilized the upper snowpack this week.  Caution is still needed in steep, high consequence terrain where loose dry avalanches are a possibility.  The persistent weak layer is still showing its face in some locations, so it is important that you check your location by digging down.  

Advisory
Click here to see the full advisory for 2018-03-09
March 9, 2018 at 5:53

Strong winds and storm-snow have created slabs above 5,000', use caution on all steep slopes over 35.°  Leeward terrain directly below ridgelines will be the primary features of concern at upper elevations through the weekend.  Expect to see loose-wet avalanche activity at lower elevations and use caution in areas where these slow moving slides have the potential to push you into high consequence terrain such as gullies, trees or cliffs.

Advisory
Click here to see the full advisory for 2018-03-09
March 9, 2018 at 6:31

A winter storm has produced snow, rain and wind across the forecast area. 6-8'' of snow has fallen above 4800', but has been moved around with the wind.  The winds were primarily out of the SW which means the E-N faces could have significant wind loading. Expect the storm slab at higher elevations to be reactive. Natural avalanches are possible and human triggered avalanches are likely on slopes steeper than 35 degrees. Make good decisions and travel safely.

Advisory
Click here to see the full advisory for 2018-03-09
March 9, 2018 at 7:01

The storm that was called off ended up materializing with 6 -8" of heavy, dense snow and gusty SW winds. Watch for windslabs and storm slabs at the high elevations, and windslab development to continue throughout the day. Expect to see loose-wet avalanche activity in the lower elevations today and on the southern aspects as the sun hits them tomorrow.  

Advisory
Click here to see the full advisory for 2018-03-13
March 13, 2018 at 5:16

Warm afternoon temperatures will cause the snowpack to weaken as Tuesday is forecast to be another warm and sunny day. Avoid areas where "loose-wet" slides have the potential to injure you by pushing you into trees and cliffs. Cornices and glide cracks are also starting to weaken, the only way to manage this problem is to avoid being underneath them as temperatures rise during the day.

Advisory
Click here to see the full advisory for 2018-03-13
March 13, 2018 at 6:21

The snowpack is going through a big change right now.  Spring is here...at least for a couple days. The warm temperatures have decreased the stability in the upper portions of the snowpack. We'll hit the climax of this warm weather today (possibly 50 degrees at 5000').  Natural avalanches will be possible today and human triggered avalanches likely. Make wise travel choices today and stay away from solar aspects especially under rock outcroppings.    

Advisory
Click here to see the full advisory for 2018-03-13
March 13, 2018 at 6:52

Sunshine and warm temperatures will destabilize the upper portion of the snowpack throughout the day.  Avoid areas where loose wet slides have the potential for pushing you into terrain traps.  And pay attention above, cornices become weaker as the weather warms.  

Advisory
Click here to see the full advisory for 2018-03-16
March 16, 2018 at 5:40

Consolidated snowpack with firm sun and raincrust with 1 inch of heavy snow on the surface.  Watch for cornice releases which have been the triggers for recent avalanches.  

Advisory
Click here to see the full advisory for 2018-03-16
March 16, 2018 at 5:45

There is potential to trigger deep weak layers on north aspects above 6,000', this potential is more prevalant in the Purcell Range. There are also large and unpredictable cornices looming above northeast aspects that should be avoided as the recent warm temperatures have caused them to weaken over the past weak.  Continue to pay attention to the weather as any rapid warming or sunshine will increase the likelihood of avalanches.

Advisory
Click here to see the full advisory for 2018-03-16
March 16, 2018 at 6:29

Spring skiing and spring avalanche problems? Visit the SW -S- SE solar aspects. Heads up for roller balls, pinwheels, cornice falls, and natural wet slides as the day warms up to indicate the instability is rising.  Winter skiing and winter avalanche problems? Visit the NE - N - NW aspects. Heads up for lingering windslabs and always be checking for the persistent weak layers.  

Advisory
Click here to see the full advisory for 2018-03-20
March 20, 2018 at 5:32

Generally stable snowpack conditions exist in the mountains of the Kootenai. Use caution in steep, unsupported terrain on northeasterly aspects above 6,000' where isolated windslabs may persist.  Expect to see small "loose-wet" avalanches form on slopes exposed to solar radiation as the weather forecast is calling for partly sunny conditions through Wednesday.

Advisory
Click here to see the full advisory for 2018-03-20
March 20, 2018 at 6:23

 Sunday night, a quick moving storm left 9-11'' of snow above 4500'. The snow fell on a firm frozen surface, giving it a nice plane to slide on.  As the new snow settles, it will become a stiffer slab and potentially produce larger avalanches. If temperatures rise in the next couple days (as they're forecasted to do), be aware of a increasing avalanche danger.  Wet slab avalanches are likely. Spring snowpack is here! Get it while it's frozen!

Advisory
Click here to see the full advisory for 2018-03-20
March 20, 2018 at 6:38

Isolated windslabs formed Sunday night and yesterday morning: look for pillowy looking snow.  Use caution in steep, unsupported terrain on the E-NE-N aspects where windslabs will still be lingering today.  As the temperatures go up with the sunshine today, expect to see pinwheels, rollerballs, and loose wet slides.  

Advisory
Click here to see the full advisory for 2018-03-23
March 23, 2018 at 5:52

Cold temperatures have locked the upper snowpack together following Thursdays' warm and wet weather. Generally stable snowpack conditions will exist on Friday with the potential to find isolated pockets of wind slab at upper elevations on leeward terrain. Expect windslabs and stormslabs to increase in size and sensitivity going into the weekend.

Advisory
Click here to see the full advisory for 2018-03-23
March 23, 2018 at 5:56

Cold temperatures have locked the upper snowpack together following Thursdays' warm and wet weather. Generally stable snowpack conditions will exist on Friday with the potential to find isolated pockets of wind slab at upper elevations on leeward terrain. Expect windslabs and stormslabs to increase in size and sensitivity going into the weekend.

Advisory
Click here to see the full advisory for 2018-03-23
March 23, 2018 at 6:50

The buried surface hoar layers from the past two weeks are starting to become active with the new, heavy loading we are getting.  Watch the temperatures and keep an eye out for rollerballs; the potential for wet slides will increase throughout the day as the temperatures goes above freezing at lower elevations or the sun peaks through. Also watch for isolated pockets of windslabs that formed late last night and expect more to form throughout the weekend.

Advisory
Click here to see the full advisory for 2018-03-23
March 23, 2018 at 6:59

Over the past 24 hours we've seen a big addition of weight to the snowpack in the form of rain.  Rain, not only adds a lot of weight to the snowpack but it also breaks down the structure of the snowpack.  Not a good thing for snow stability. The good news is...cold temperatures will soon start to freeze up the snowpack, making it stronger. Don't trust the snowpack yet, but it should trend in the right direction soon.

Advisory
Click here to see the full advisory for 2018-03-27
March 27, 2018 at 5:36

Strong southwesterly winds and new snow will continue to build windslabs today. Expect to find windslabs on steep, leeward terrain at the upper elevations and in "cross-loaded" gullies where the wind has depostited the new snow. The most recent weather system is forecasted to bring rain to western Montana below 5,000' today, this will create perfect conditions for "loose-wet" avalanches through out the day Tuesday below treeline. 

Advisory
Click here to see the full advisory for 2018-03-27
March 27, 2018 at 6:30

Just as we get going with Spring, winter comes roaring back! A strong, fast moving system's currently moving through the panhandle. the storm looks like it will drop another 4-6'' of snow (above 4000') accompanied by strong SW winds. It looks like the storm will push out tomorrow morning. The cold temperatures leading up to this storm have kept the snowpack cold and frozen.  Be most aware of new snow slab formation. Hang in there, spring has to come sometime...right?!

Advisory
Click here to see the full advisory for 2018-03-27
March 27, 2018 at 6:55

It continues to still be winter up in the mountains! We have another storm hitting with 4 - 8 inches through tomorrow.  Accompanying that storm is sustained winds in the upper 20 mph range and gusts in the 40's.  Expect to find windloading on the leeward ridgetops and cross loading in open areas.  In the lower elevations where there is rain predicted with the storm, expect to see loose wet slides as the snowpack absorbs the rain.  

Advisory
Click here to see the full advisory for 2018-03-30
March 30, 2018 at 6:08

The highest elevations of the Kootenai are harboring isolated wind slabs that could be triggered in steep terrain. Pay attention to density changes in the surface snowpack and look for "lens shaped pillows" when travelling above treeline. At lower elevations the snowpack is generally stable, the exception will be during Saturday when the sun may cause small, "loose-wet" avalanches on southerly and westerly aspects.

Advisory
Click here to see the full advisory for 2018-03-30
March 30, 2018 at 6:39

The mountains have not picked up an appreciable amount of new snow since last week and the mild weather has settled the pack nicely.  Diurnal temperatures are creating a breakable crust at the surface on all aspects.  The north aspect has some layers in last weeks snow but not too concerning.  Watch windloaded areas, mainly N and E, in steep terrain where windslabs could fail.

Advisory
Click here to see the full advisory for 2018-03-30
March 30, 2018 at 6:49

The mountains have been experiencing mild weather this week which has helped the snowpack settle and stabilize nicely.  Watch near the ridgetops and ridgelines as they could be harboring isolated windslaps that could be triggered in steep terrain.  Pay attention to daytime temperatures and solar radiation and choose your slopes to follow those temperatures.   

Advisory
Click here to see the full advisory for 2018-04-03
April 3, 2018 at 6:52

Put away your tennis rackets and mountain bikes. Winter is still here! The Selkirk and Cabinet mountains got a refresh of snow over the past 48 hours. Between 6-13'' fell above 4500'.  Most areas are showing winds were out of the S-SW-W.  Snow densities were low so expect to see snow on the move. Any leeward slope should be looked at with heightened concern.  The snow surface under the new snow is frozen and firm, making a good slide surface.

Advisory
Click here to see the full advisory for 2018-04-03
April 3, 2018 at 6:52

Put away your tennis rackets and mountain bikes. Winter is still here! The Selkirk and Cabinet mountains got a refresh of snow over the past 48 hours. Between 6-13'' fell above 4500'.  Most areas are showing winds were out of the S-SW-W.  Snow densities were low so expect to see snow on the move. Any leeward slope should be looked at with heightened concern.  The snow surface under the new snow is frozen and firm, making a good slide surface.

Advisory
Click here to see the full advisory for 2018-04-03
April 3, 2018 at 6:52

April SNOW showers! Wind slabs continue to be the main concern at the higher elevation ridges.  The new snow that we've been getting has been accompanied by transport speed winds. The small storms with winds trend will continue this week, creating layered wind slabs.  Look for signs of windloading in the areas you are travelling.  

Advisory
Click here to see the full advisory for 2018-04-06
April 6, 2018 at 4:54

Thursdays warm weather conditions will be pushed out of the area on Friday morning by a cold arctic front. This decline in temperatures will improve the stability of the upper snowpack as it locks the wet snow together on Friday.  Moving into the weekend the weather forecast is predicting additional snowfall that is predicted to be wet and dense. These conditions will likely increase the avalanche hazard as dense storm slabs build through the weekend.

Advisory
Click here to see the full advisory for 2018-04-06
April 6, 2018 at 6:54

Continuing with our April snow showers theme through Friday, we recieved 2 to 7" of snow in the last 24 hours at the high elevations.  This came in warm yesterday and had good bonding to the crusts underneath, but expect wind slabs at the ridgelines from the cooler snow that came in overnight.  Cold overnight temperatures helped improve the stability due to wet slide potential, but watch for it to increase as daytime temperatures go above freezing again this weekend.

Advisory
Click here to see the full advisory for 2018-04-06
April 6, 2018 at 6:57

A strong weather system is currently moving through northern Idaho.  Today, expect to see strong winds, snow and freezing temperatures. Yesterday's rain/snow mix saturated the top 6-8'' of the snowpack and made it avalanche prone. Temperatures overnight were cold enough to lock it back up though. I'd expect to see a firm refrozen surface today with places of wind deposited snow on top.  I wouldn't expect to see any natural activity today but human triggered avalanches are possible.

Advisory

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