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., Sunday, March 29, 2020
E.g., Sunday, March 29, 2020
E.g., Sunday, March 29, 2020
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
Click here to see the full advisory for 2018-12-10
December 10, 2018 at 15:50

IPAC will begin issuing regularly scheduled avalanche forecasts beginning this Friday, December 14th.  Forecasts will occur twice a week with days on Fridays and Tuesdays.  You can get forecsat information here, the IPAC facebook page, and our phone hotline at 208 765-7323.  

Advisory
Click here to see the full advisory for 2018-12-10
December 10, 2018 at 15:50

IPAC will begin issuing regularly scheduled avalanche forecasts beginning this Friday, December 14th.  Forecasts will occur twice a week with days on Fridays and Tuesdays.  You can get forecsat information here, the IPAC facebook page, and our phone hotline at 208 765-7323.  

Advisory
Click here to see the full advisory for 2018-12-11
December 11, 2018 at 10:35

IPAC will begin issuing regularly scheduled avalanche forecasts beginning this Friday, December 14th.  Forecasts will be posted twice a week, Tuesday and Fridays.  You can get forecast information here, the IPAC facebook page, and our phone hotline at 208 765-7323.   As usual, we are interested in hearing what you are seeing out there.  Please help us make the forecast better by posting relevant info on our observations page. 

Advisory
Click here to see the full advisory for 2018-12-11
December 11, 2018 at 10:35

IPAC will begin issuing regularly scheduled avalanche forecasts beginning this Friday, December 14th.  Forecasts will be posted twice a week, Tuesday and Fridays.  You can get forecast information here, the IPAC facebook page, and our phone hotline at 208 765-7323.   As usual, we are interested in hearing what you are seeing out there.  Please help us make the forecast better by posting relevant info on our observations page. 

Advisory
Click here to see the full advisory for 2018-12-11
December 11, 2018 at 10:35

IPAC will begin issuing regularly scheduled avalanche forecasts beginning this Friday, December 14th.  Forecasts will be posted twice a week, Tuesday and Fridays.  You can get forecast information here, the IPAC facebook page, and our phone hotline at 208 765-7323.   As usual, we are interested in hearing what you are seeing out there.  Please help us make the forecast better by posting relevant info on our observations page. 

Advisory
Click here to see the full advisory for 2018-12-13
December 13, 2018 at 17:10

The avalanche danger is MODERATE with isolated areas of CONSIDERABLE on open windloaded NNE aspects above 35 degrees.  Recent new snow and high winds have loaded up these slopes with 4' + windslabs that sit atop an icecrust in the middle of the pack with surface hoar present a few inches above the crust.  These layers were found on all aspects at 6000 feet.  More snow and winds expected tonight through tomorrow.  

Advisory
Click here to see the full advisory for 2018-12-14
December 14, 2018 at 5:29

Fresh storm snow and strong southwest winds have created slabs on leeward slopes in high alpine terrain. Below tree line be alert to the possibility to trigger storm slabs in areas where this weeks storm snow is overlying a layer of buried surface hoar. Pay attention to changes as strong winds and additional snow are forecast Friday night into Saturday morning.

Advisory
Click here to see the full advisory for 2018-12-14
December 14, 2018 at 7:06

Last week's cold, dry weather left us with a blanket of well-developed surface hoar that was subsequently buried by 10 to 15 inches of snow from the Monday through Thursday storms. Especially at higher elevations, this surface hoar was buried intact forming a weak layer under our new storm slab.  Strong winds accompanied the new precipitation that came in yesterday and will continue to move snow around creating wind slabs on the ridges and mountain tops.  

Advisory
Click here to see the full advisory for 2018-12-18
December 18, 2018 at 5:25

A subtropical storm will push through the forecast area on Tuesday and Wednesday bringing heavy mountain snow and strong southwesterly winds. This will create thick and reactive storms slabs to build above 4,500'. Expect avalanche danger to rise as this storm materializes.  Avoid riding on or below slopes steeper than 30° until this snow has had time to settle.

Advisory
Click here to see the full advisory for 2018-12-18
December 18, 2018 at 6:26

The snowpack looked to be healing quite a bit...until today! A strong winter storm is showing up as I type. Heavy snow and wind will dominate our weather for the next 24 hours.  The areas of most concern will be steep, wind loaded slopes as well as slopes near  exposed rock outcroppings.  My advise is "Be pacient".  I anticipate this snow being a good thing for our base but might need a couple of days to stablize. 

Advisory
Click here to see the full advisory for 2018-12-18
December 18, 2018 at 7:04

The warm temperatures over the past couple days have helped the snowpack heal up quite a bit, especially at the mid and low elevations. There are still several lurking dragons buried at our upper elevations to be aware of.  Expect the avalanche danger to increase as this new storm arriving deposits a large amount of heavy, warm snow accompanied by strong winds.  Avoid riding on or below slopes steeper than 30 degrees until this snow has had time to adjust. 

Advisory
Click here to see the full advisory for 2018-12-21
December 21, 2018 at 5:11

Strong southwesterly winds and a dose of fresh snow have created sensitive wind slabs on leeward terrain above treeline. Avoid steep slopes (over 30°) on north-east aspects below ridgelines and cross loaded gullies. Pay attention to changes in surface density and watch for "pillows" and "lens shaped" features in the upper snowpack. These windslabs will likely be sensitive through the weekend.

Advisory
Click here to see the full advisory for 2018-12-21
December 21, 2018 at 6:17

Overnight another round of snow has added loading to a pack that was still adjusting from the storms earlier in the week.  With winds in the 40's last night, expect to see widespread wind slabs on the leeward slopes and cross loaded gullies.  There is still a persistent weak layer in many locations; it was active in pit tests yesterday.  Assess each location you plan on riding or sliding to see how reactive this layer is. 

Advisory
Click here to see the full advisory for 2018-12-21
December 21, 2018 at 6:53

Since December 18th the Selkirks and Cabinets have picked up about 10 inches of new snow.  Last night the mountains received another 3-5 inches of new snow and that was accompanied by strong winds and dropping temperatures.  That will have created some heavy windloading on all easterly aspects as well as north and potentially northwest.  It would be wise to avoid ridgetop loading areas for today and possibly the weekend.

Advisory
Click here to see the full advisory for 2018-12-24
December 24, 2018 at 16:14

Generally stable snowpack conditions exist below treeline. Above treeline there are still persistent weak-layers within the snowpack, the Purcell Mountains are where you are most likely to find these weak layers. Human triggered avalanches are not likely; but, will be large and have high consequences if triggered. Moving forward into the weekend there is the potential for stability to decline if the next predicted storm materializes. Continue to practice safe travel habits and keep an eye on the weather.

Advisory
Click here to see the full advisory for 2018-12-25
December 25, 2018 at 6:14

Merry Christmas backcountry friends! If you get out today to enjoy the backcountry, you may be greeted by sunshine and nice sliding conditions! Even though we'll have a break in the weather for the next 30 hours or so,  don't let your guard down! Remember: Persistant weak layers don't care that it's Christmas!  Don't let the avalanche grinch steal your fun today!

Advisory
Click here to see the full advisory for 2018-12-25
December 25, 2018 at 6:14

Merry Christmas backcountry friends! If you get out today to enjoy the backcountry, you may be greeted by sunshine and nice sliding conditions! Even though we'll have a break in the weather for the next 30 hours or so,  don't let your guard down! Remember: Persistant weak layers don't care that it's Christmas!  Don't let the avalanche grinch steal your fun today!

Advisory
Click here to see the full advisory for 2018-12-25
December 25, 2018 at 6:14

Merry Christmas backcountry friends! If you get out today to enjoy the backcountry, you may be greeted by sunshine and nice sliding conditions! Even though we'll have a break in the weather for the next 30 hours or so,  don't let your guard down! Remember: Persistant weak layers don't care that it's Christmas!  Don't let the avalanche grinch steal your fun today!

Advisory
Click here to see the full advisory for 2018-12-28
December 28, 2018 at 5:15

Generally stable snowpack conditions exist below treeline. Above treeline there are still persistent weak-layers within the snowpack, the Purcell Mountains are where you are most likely to find these weak layers. Human triggered avalanches are not likely; but, will be large and have high consequences if triggered. Moving forward into the weekend there is the potential for stability to decline if the next predicted storm materializes. Continue to practice safe travel habits and keep an eye on the weather.

Advisory
Click here to see the full advisory for 2018-12-28
December 28, 2018 at 6:03

The colder air temperature and minimal winds from the past couple days has kept the snow surface nice and fluffy! Even though the weather has been pretty stable, we're still seeing changes happen in the snowpack.  Current snow conditions (thick stiff slab of snow with light new snow on top) are making backcountry travel a little easier right now, so don't be tempted to travel in places your gut is telling you to stay off of.  

Advisory
Click here to see the full advisory for 2018-12-28
December 28, 2018 at 6:03

The colder air temperature and minimal winds from the past couple days has kept the snow surface nice and fluffy! Even though the weather has been pretty stable, we're still seeing changes happen in the snowpack.  Current snow conditions (thick stiff slab of snow with light new snow on top) are making backcountry travel a little easier right now, so don't be tempted to travel in places your gut is telling you to stay off of.  

Advisory
Click here to see the full advisory for 2018-12-28
December 28, 2018 at 6:03

The colder air temperature and minimal winds from the past couple days has kept the snow surface nice and fluffy! Even though the weather has been pretty stable, we're still seeing changes happen in the snowpack.  Current snow conditions (thick stiff slab of snow with light new snow on top) are making backcountry travel a little easier right now, so don't be tempted to travel in places your gut is telling you to stay off of.  

Advisory
Click here to see the full advisory for 2019-01-01
January 1, 2019 at 5:50

The most recent storm has created wind slabs on north-easterly facing terrain at treeline and above. Avoid steep terrrain on these aspects near ridge-lines and pay attention to gullies that may be "cross-loaded" in steep, open terrain. The recent loading has also caused the persistent weak layers to become more reactive in areas where the snowpack is thin and weak. Use caution in areas where the snow is thin and pay attention to collapsing and cracking snow as you travel.  

Advisory
Click here to see the full advisory for 2019-01-01
January 1, 2019 at 6:13

Happy New Year everyone!  Looks like we have a beautiful day today for sliding in the mountains with a little fresh snow to touch things up.  Just remember, even though it's a new year and conditions are good, accidents can still happen.  The bottom line is we have some wind slabs on easterly aspects and a couple deeper weak layers to keep in mind.  Pay attention to your terrain choices and watch for signs of instability.

Advisory
Click here to see the full advisory for 2019-01-01
January 1, 2019 at 6:13

Happy New Year everyone!  Looks like we have a beautiful day today for sliding in the mountains with a little fresh snow to touch things up.  Just remember, even though it's a new year and conditions are good, accidents can still happen.  The bottom line is we have some wind slabs on easterly aspects and a couple deeper weak layers to keep in mind.  Pay attention to your terrain choices and watch for signs of instability.

Advisory
Click here to see the full advisory for 2019-01-01
January 1, 2019 at 6:13

Happy New Year everyone!  Looks like we have a beautiful day today for sliding in the mountains with a little fresh snow to touch things up.  Just remember, even though it's a new year and conditions are good, accidents can still happen.  The bottom line is we have some wind slabs on easterly aspects and a couple deeper weak layers to keep in mind.  Pay attention to your terrain choices and watch for signs of instability.

Advisory
Click here to see the full advisory for 2019-01-04
January 4, 2019 at 5:13

With just enough snow and wind yesterday, wind slabs will be our main concern today and through the weekend.  Pay attention to our traditional start zones on the N-NE-E aspects as they will be sensitive. Also, our couple of problem layers keep getting buried a little deeper each storm, but it is important to keep those in mind as we get further into the new year.  Pay attention to your terrain choices and watch for signs of instability.

Advisory
Click here to see the full advisory for 2019-01-04
January 4, 2019 at 5:28

Strong south-westerly winds combined with additional snowfall will create sensitive windslabs on steep, leeward terrain. These slabs will continue to build through Friday. New storm snow will also raise the avalanche hazard going into the weekend as new, dense snow will create a cohesive slab layer and add stress to the existing weak layers within the snowpack. Give the snowpack time to adjust to this change and avoid steep terrain (over 30°) through the weekend.

Advisory
Click here to see the full advisory for 2019-01-04
January 4, 2019 at 6:22

Heavy snow and high winds will create wind and storm slabs on a dense snow pack with increasing avalanche hazard.  The overall hazard rating is considerable for the Selkirk and Cabinets.  

Advisory
Click here to see the full advisory for 2019-01-08
January 8, 2019 at 4:58

Sunday nights storm dropped 12-18" of snow on the Cabinet Mountains. This new snow formed sensitive storm slabs that will be reactive in steep terrain, give the new snow time to settle and strengthen before venturing into steep terrain this week. In the Purcells the "persistent slab" problem continues to lurk, it is a low-likelihood/high consequence scenario. Practice safe travel habits and use caution in likely "trigger spots" such as steep, convex rolls and areas where the snowpack is thin.

Advisory
Click here to see the full advisory for 2019-01-08
January 8, 2019 at 6:37

New snow and wind loading are the topics of the day! The forecast area recieved a new blanket of snow over the past 48 hours, with more to come. 

Advisory
Click here to see the full advisory for 2019-01-08
January 8, 2019 at 6:37

New snow and wind loading are the topics of the day! The forecast area recieved a new blanket of snow over the past 48 hours, with more to come. 

Advisory
Click here to see the full advisory for 2019-01-11
January 11, 2019 at 5:27

Another warm and wet storm has brought high mountain snow above treeline and rain below. Expect to encounter storm slabs above treeline on all aspects and crusty snow conditions below 6,000'. In the Purcell Range continue to keep an eye on the persistent weaknesses at treeline and above. Stability will improve as temperatures drop and the wet snow locks together at lower elevations.

Advisory
Click here to see the full advisory for 2019-01-11
January 11, 2019 at 6:27

This week was a good one for new snow accumulation.  Temperatures warmed on Wednesday and we saw rain and heavy snow to the mountaintops which created a wet layer on top yesterday.  The wet snow over the lighter snow will create some concerns as you gain elevation today since the wet snow layer will be freezing up high.  Triggering the wet stuff could release a weak layer in the light snow so be cautious around steeper terrain on any aspect.  

Advisory
Click here to see the full advisory for 2019-01-11
January 11, 2019 at 6:27

This week was a good one for new snow accumulation.  Temperatures warmed on Wednesday and we saw rain and heavy snow to the mountaintops which created a wet layer on top yesterday.  The wet snow over the lighter snow will create some concerns as you gain elevation today since the wet snow layer will be freezing up high.  Triggering the wet stuff could release a weak layer in the light snow so be cautious around steeper terrain on any aspect.  

Advisory
Click here to see the full advisory for 2019-01-15
January 15, 2019 at 5:19

Last weeks warm temperatures and rain were followed by high pressure and cooler conditions. This combo has effectively set us up for stable snowpack conditions in the short term. Expect this to change by Thursday as more snow moves into the area and falls on a layer of growing surface hoar and thick rain crust. Continue to keep an eye out for potential trouble spots in extreme terrain and areas of thin snow at the highest elevations.

Advisory
Click here to see the full advisory for 2019-01-15
January 15, 2019 at 6:11

A couple days of sunshine and warm temperatures, have helped settle and consolidate the snowpack. A rain crust on the surface doesn't provide the best traveling surface, but there's something to be said for good stability and visibility! Be especially heads after the next significant snow storm. Even though the sun is helping heal the pack right now, it will leave a firm slide surface in it's wake.  

Advisory
Click here to see the full advisory for 2019-01-15
January 15, 2019 at 6:27

Warm temperatures the past several days have helped the snowpack stabilize. Still of concern is the November buried surface hoar layer where we have areas of thin snowpack at the highest elevations and around rock outcrops.  Weather patterns will be changing Thursday, but until then enjoy the stability and the visibility.

Advisory
Click here to see the full advisory for 2019-01-18
January 18, 2019 at 5:35

The stable snow conditions of the past week will deteriorate as new snow falls on a bed surface of crust and well developed surface hoar. Thin, soft snow slabs will be wide spread and reactive Friday and likely to build through the weekend. Use caution in steep terrain and pay attention to the potential consequences of being caught in small slides as you travel. Avalanche danger has the potential to rise this weekend if predicted snowfall materializes!

Advisory
Click here to see the full advisory for 2019-01-18
January 18, 2019 at 7:02

Mid-week's weather left us with a snowpack with a bed surface of crust and surface hoar.  The new storm is falling on this weak, slippery layer and will cause the avalanche danger to increase through the weekend as more snow accumulates.  Expect to find reactive storm slabs at all elevations. Watch for indication of these in the flat areas with shooting cracks and whumphing.  

Advisory
Click here to see the full advisory for 2019-01-18
January 18, 2019 at 7:02

Mid-week's weather left us with a snowpack with a bed surface of crust and surface hoar.  The new storm is falling on this weak, slippery layer and will cause the avalanche danger to increase through the weekend as more snow accumulates.  Expect to find reactive storm slabs at all elevations. Watch for indication of these in the flat areas with shooting cracks and whumphing.  

Advisory
Click here to see the full advisory for 2019-01-22
January 22, 2019 at 6:06

You'll notice a "crust cake" in the upper two feet of snowpack with light snow in between each crust.  Some weak layers still exist in the light snow which has not fully settled due to the cold weather.  Be cautious in steep, convex terrain where you could trigger these upper weak layers today.  Winter Storm Warning issued tonight!

Advisory
Click here to see the full advisory for 2019-01-22
January 22, 2019 at 6:36

Soft storm slabs are resting on slippery crust and buried surface hoar layer in many locations. Storms coming in later today will add more weight to these slabs at all elevations.  Avalanche danger is going to rise Wednesday with the predicted amounts of snowfall and strong winds hitting the region.  Winter Storm Warning tonight! Play it safe and dial it back.  

Advisory
Click here to see the full advisory for 2019-01-23
January 23, 2019 at 9:18

Substantial snowfall, strong winds and some very reactive weak layers are creating HIGH AVALANCHE DANGER at treeline and below. Avoid travelling on or below all terrain that is steeper than 30°. 

Advisory
Click here to see the full advisory for 2019-01-23
January 23, 2019 at 9:18

Substantial snowfall, strong winds and some very reactive weak layers are creating HIGH AVALANCHE DANGER at treeline and below. Avoid travelling on or below all terrain that is steeper than 30°. 

Advisory
Click here to see the full advisory for 2019-01-23
January 23, 2019 at 9:18

Substantial snowfall, strong winds and some very reactive weak layers are creating HIGH AVALANCHE DANGER at treeline and below. Avoid travelling on or below all terrain that is steeper than 30°. 

Advisory
Click here to see the full advisory for 2019-01-25
January 25, 2019 at 5:12

Buried surface hoar under a cohesive slab layer are prevalant at treeline and below across the forest. The avalanche Danger will be CONSIDERABLE at treeline and below in the Purcells and East Cabinets. In the West Cabinets the danger is MODERATE with pockets of CONSIDERABLE danger. Use caution and practice safe travel habits to minimize exposure and likelihood of triggering this weak layer.

Advisory
Click here to see the full advisory for 2019-01-25
January 25, 2019 at 6:14

The mid-elevation danger rating is moderate with pockets of considerable because of a buried surface hoar layer we found only on sheltered north and east aspects in the 5,500-6,000 foot range.  Other weak layers were associated with the more recent snowfall and were failing in the upper foot of snowpack on all aspects that we tested.  West winds may be building touchy slabs up high on easterly aspects.

Advisory
Click here to see the full advisory for 2019-01-25
January 25, 2019 at 6:56

Buried surface hoar on top of a stout crust is still reactive in sheltered areas near treeline in the mid elevations creating pockets of considerable avalanche danger. When you are travelling up through elevation to get to your destination, be gathering lots of data as you go.  Moderate winds with the new snow have created small wind slabs on the leeward ridges and peaks.  We have a complicated snowpack out there that requires lots of consideration on your part. 

Advisory
Click here to see the full advisory for 2019-01-29
January 29, 2019 at 5:45

The buried surface hoar can still be found below 6,500' in elevation. It has become less reactive in most locations but it is still possible to trigger a slide on this weak layer. Use caution in steep and sheltered drainage locations where you could trigger a small slide on surface hoar under last Wednesdays' storm snow.

Advisory
Click here to see the full advisory for 2019-01-29
January 29, 2019 at 6:38

Sunny weather and no new precipitation over the weekend has helped the snowpack stabilize, but there are still pockets of instability out there.  Heads up for isolated areas of buried surface hoar, especially in sheltered areas on the NW-N-NE aspects at the mid elevations.  Several human triggered avalanches were reported over the weekend on this buried persistent weak layer.

Advisory

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