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., 09/19/2019
E.g., 09/19/2019
E.g., 09/19/2019
Date the forecast was published:sort ascending Bottom Line
Click here to see the full forecast for 2019-01-14
January 14, 2019 at 6:50

MODERATE avalanche danger continues with a persistent slab avalanche problem at all elevations.  Large and destructive avalanches are still a concern throughout the forecast region.  Avalanche danger is expected to further rise over the next few days.

Click here to see the full forecast for 2019-01-13
January 13, 2019 at 6:50

MODERATE avalanche danger continues at all elevations due to a persistent slab avalanche problem.  Large destructive avalanches remain possible today.

Click here to see the full forecast for 2019-01-12
January 12, 2019 at 6:58

Avalanche danger has been elevated from yesterday's LOW danger back up to MODERATE danger for today at all elevations due to uncertainty associated with a lingering persistent slab avalanche problem. Large destructive avalanches are possible again today, mainly in response to large triggers.

Click here to see the full forecast for 2019-01-11
January 11, 2019 at 6:52

Avalanche danger is LOW for all elevations. Normal caution is advised.

Click here to see the full forecast for 2019-01-10
January 10, 2019 at 7:00

The avalanche danger is MODERATE in near and above treeline areas with LOW danger below treeline. Some lingering wind slabs may still exist and persistent slabs have become unlikely but not impossible.

Click here to see the full forecast for 2019-01-09
January 9, 2019 at 6:54

CONSIDERABLE avalanche danger exists today at all elevations. Wind slab, persistent slab, and possibly storm slab avalanche problems are expected in the backcountry. Large high consequence avalanches could occur today.

Click here to see the full forecast for 2019-01-08
January 8, 2019 at 6:55

MODERATE avalanche danger will exist at all elevations throughout the forecast region due to wind slab and persistent slab avalanche problems.  Large destructive human triggered avalanches could be possible today. 

Click here to see the full forecast for 2019-01-07
January 7, 2019 at 6:58

CONSIDERABLE avalanche danger exists at all elevations throughout the forecast region due to wind slab and storm slab avalanche problems.  Dangerous avalanche conditions exist with the potential for large destructive avalanches today. 

Click here to see the full forecast for 2019-01-06
January 6, 2019 at 7:01

CONSIDERABLE avalanche danger will exist at all elevations this morning due to wind slab and storm slab avalanche problems. The avalanche danger will increase to HIGH around midday as a second storm impacts the forecast area bringing blizzard conditions. HIGH danger will last through the night. Travel in avalanche terrain is not recommended.

Click here to see the full forecast for 2019-01-05
January 5, 2019 at 6:57

LOW avalanche danger continues this morning for all elevations. Following the onset of snowfall, an increase to CONSIDERABLE avalanche danger will occur at all elevations this afternoon and continue through the overnight hours. Wind slab and storm slab avalanche problems will develop.

Click here to see the full forecast for 2019-01-04
January 4, 2019 at 6:54

LOW avalanche danger continues today for all elevations. Avalanche danger will increase significantly tomorrow at all elevations following the onset of new snowfall.

Click here to see the full forecast for 2019-01-03
January 3, 2019 at 6:50

LOW avalanche danger continues at all elevations throughout the forecast region.  Avalanche activity is unlikely today.  Normal caution is advised. 

Click here to see the full forecast for 2019-01-02
January 2, 2019 at 6:50

LOW avalanche danger will continue throughout the forecast region at all elevations.  Normal caution is advised.

Click here to see the full forecast for 2018-12-31
December 31, 2018 at 7:00

LOW avalanche danger exists for all elevations through New Year's Day. Even though avalanche activity is unlikely, other problems could arise resulting from the firm and challenging snow surface conditions on most exposed slopes. This forecast will be updated again on January 2, 2019.

Click here to see the full forecast for 2018-12-30
December 30, 2018 at 7:00

LOW avalanche danger exists for all elevations today. While some difficult (but not impossible) to trigger wind slabs may still lurk in isolated near and above treeline terrain, human-triggered avalanches should remain unlikely in most places today.

Click here to see the full forecast for 2018-12-29
December 29, 2018 at 6:46

Avalanche danger is LOW for all elevations. Difficult to trigger wind slabs exist in recently wind loaded areas, mainly near treeline and above treeline. Human triggered avalanches are unlikely today but not impossible.

Click here to see the full forecast for 2018-12-28
December 28, 2018 at 6:47

MODERATE avalanche danger continues near treeline and above treeline in specific areas where blowing snow has formed new wind slabs. In wind protected areas below treeline, LOW avalanche danger exists.

Click here to see the full forecast for 2018-12-27
December 27, 2018 at 6:48

Strong winds will keep the avalanche danger at Moderate due to a wind slab avalanche problem.  Wind slab avalanches will be possible in wind exposed near treeline and above treeline terrain.  Low avalanche danger will exist in below treeline terrain.

Click here to see the full forecast for 2018-12-26
December 26, 2018 at 6:50

Moderate Avalanche Danger will exist as continued high winds affect our region today and tonight.  Wind slab avalanches will be possible in near and above treeline terrain.  Low Avalanche Danger will exist in below treeline terrain.

Click here to see the full forecast for 2018-12-25
December 25, 2018 at 6:59

Human-triggered avalanches will be likely today in near and above treeline terrain due to a wind slab avalanche problem. The avalanche danger is CONSIDERABLE. Some loose dry avalanches may also be possible in more sheltered terrain. 

Click here to see the full forecast for 2018-12-24
December 24, 2018 at 7:00

The avalanche danger will rise to MODERATE during the day as new wind slabs form in near and above treeline terrain. Human-triggered avalanches will become possible. Overnight the avalanche danger will continue rising to CONSIDERABLE as wind slabs become larger and more widespread and storm slabs may become possible in below treeline terrain. 

Click here to see the full forecast for 2018-12-23
December 23, 2018 at 6:59

The avalanche danger will remain LOW today. In the unlikely but not impossible event an avalanche does occur today, it would be a wind slab on an isolated terrain feature. The avalanche danger will increase tomorrow.

Click here to see the full forecast for 2018-12-22
December 22, 2018 at 6:54

LOW avalanche danger exists today for all elevations. A wind slab avalanche problem lingers near and above treeline. Human triggered avalanches are not impossible today.

Click here to see the full forecast for 2018-12-21
December 21, 2018 at 6:58

MODERATE avalanche danger continues in near treeline and above treeline terrain due to old and new wind slabs. LOW avalanche danger exists in wind protected areas below treeline.

Click here to see the full forecast for 2018-12-20
December 20, 2018 at 6:50

Moderate Avalanche Danger will continue today due to a wind slab avalanche problem as gale force winds with the possibility of light snow returns to our forecast area.  Wind slab avalanches will continue to be possible in near and above treeline terrain.  Low Avalanche Danger will exist in below treeline terrain.  

Click here to see the full forecast for 2018-12-19
December 19, 2018 at 6:54

Moderate Avalanche Danger will exist today due to a wind slab avalanche problem.  Wind slab avalanches will remain possible in near and above treeline terrain.  Low Avalanche Danger will exist in below treeline terrain.

Click here to see the full forecast for 2018-12-18
December 18, 2018 at 6:57

MODERATE avalanche danger still exists in near and above treeline terrain, due to the possibility of lingering wind slabs. Human-triggered avalanches may remain possible today. Create a plan with safety margins to avoid the avalanche problems and maintain awareness of the conditions and terrain to stick to these safety margins while traveling in the backcountry.

Click here to see the full forecast for 2018-12-17
December 17, 2018 at 7:00

Human-triggered avalanches will be possible today due to wind slab and storm slab avalanche problems. MODERATE avalanche danger exists at all elevations. Maintain awareness of the conditions and terrain while traveling in the backcountry and use this information to create safety margins that avoid the avalanche problems. 

Click here to see the full forecast for 2018-12-16
December 16, 2018 at 6:50

The avalanche danger will remain LOW and avalanche activity will remain unlikely until it starts snowing this evening. Continue to use normal caution when traveling in the backcountry especially in areas where old firm wind slabs may linger. The avalanche danger will increase quickly as snow starts to accumulate tonight and could reach CONSIDERABLE during the night.

Click here to see the full forecast for 2018-12-15
December 15, 2018 at 6:53

LOW avalanche danger continues for all elevations. Avalanche activity is unlikely, but remain cautious if traveling in areas of firm wind slab.

Click here to see the full forecast for 2018-12-14
December 14, 2018 at 6:45

LOW avalanche danger continues for all elevations. Avalanche activity remains unlikely, but keep an eye out for isolated instability in any areas where drifting snow accumulates.

Click here to see the full forecast for 2018-12-13
December 13, 2018 at 6:48

Low Avalanche Danger is expected throughout the forecast region today.  Normal caution is advised. 

Click here to see the full forecast for 2018-12-12
December 12, 2018 at 6:48

Moderate Avalanche Danger is expected today throughout the forecast region due to a wind slab avalanche problem.  Increased winds overnight and through today will make wind slab avalanches possible in near and above treeline terrain.  Low avalanche danger will exist in below treeline terrain.

Click here to see the full forecast for 2018-12-11
December 11, 2018 at 6:59

New wind slabs could have formed during the night and old wind slabs with a fragile weak layer (surface hoar) below them may still linger on isolated slopes in very wind-exposed near and above treeline terrain. The avalanche danger is MODERATE. Human triggered avalanches may be possible today.

Click here to see the full forecast for 2018-12-10
December 10, 2018 at 6:59

Some wind slabs may exist on top of a buried weak layer in some areas in very wind-exposed near and above treeline terrain. The avalanche danger is MODERATE. Human triggered avalanches may be possible today.

Click here to see the full forecast for 2018-12-09
December 9, 2018 at 6:57

Increased winds during the night and continued windy conditions today may mean that growing wind slabs could exist on top of a buried weak layer. The avalanche danger is MODERATE in near and above treeline terrain. Human triggered avalanches may be possible today.

Click here to see the full forecast for 2018-12-08
December 8, 2018 at 6:45

Avalanche danger has risen to MODERATE danger near treeline and above treeline. Increased SW winds last night may have created new wind slabs and loaded the Dec 4 buried surface hoar layer. LOW avalanche danger exists below treeline.

Click here to see the full forecast for 2018-12-07
December 7, 2018 at 6:50

LOW avalanche danger exists for all elevations. Normal caution is advised.

Click here to see the full forecast for 2018-12-06
December 6, 2018 at 6:45

Low avalanche danger is expected throughout the forecast area today.  Buried surface hoar exists under 3-5'' of storm snow from yesterday in many areas, but this small amount of additional load is not enough to warrant an avalanche concern at this time.  Normal caution is advised in the backcountry today.

Click here to see the full forecast for 2018-12-05
December 5, 2018 at 6:59

Moderate Avalanche danger will exist throughout the forecast region today due to a persistent slab avalanche problem.  Widespread surface hoar has been reported throughout the area this past week.  Light amounts of new snow occurred overnight and are expected into tomorrow.  Most avalanches associated with this buried surface hoar are expected to be small, but even small avalanches can have severe consequences with our early season snow coverage.  Evaluate snow and terrain carefully today, identify areas of concern.    

Click here to see the full forecast for 2018-12-04
December 4, 2018 at 6:59

The avalanche danger will remain at MODERATE today due to the possibility of unstable storm slabs still lingering in some areas. Significant uncertainty remains concerning these storm slabs. If any doubts exist about the stability of a slope, avoid it and move on to something lower angle with less uncertainty. New snow expected tonight may allow storm slabs to become more widespread.

Click here to see the full forecast for 2018-12-03
December 3, 2018 at 6:57

MODERATE avalanche danger exists at all elevations today. Human triggered avalanches remain possible. Some unstable storm slabs and wind slabs may still linger in some areas. If any doubts exist about the stability of a slope, avoid it and move on to something lower angle with less uncertainty.

Click here to see the full forecast for 2018-12-02
December 2, 2018 at 6:48

MODERATE avalanche danger exists at all elevations today due to lingering wind slabs and possibly some remaining storm slabs. Human triggered avalanches will remain possible today. If any doubts exist about the stability of a slope, avoid it and move on to something lower angle with less uncertainty.

Click here to see the full forecast for 2018-12-01
December 1, 2018 at 6:52

Avalanche danger will quickly rise to CONSIDERABLE danger this morning at all elevations as new wind slab and storm slab avalanche problems develop. Anticipate areas of unstable snow both above and below treeline today. Snowpack instability is expected to increase rapidly. 

Click here to see the full forecast for 2018-11-30
November 30, 2018 at 6:42

Areas of MODERATE avalanche danger exist near treeline and above treeline due to recently formed wind slabs. Below treeline, avalanche danger is LOW. Avalanche danger is expected to increase on Saturday at all elevations.

Click here to see the full forecast for 2018-11-29
November 29, 2018 at 6:50

High Avalanche Danger will exist today as heavy snowfall with gale force winds impact our forecast region.  Wind slab and storm slab avalanche problems will become very likely today in near treeline and above treeline terrain where previous snow cover existed.  Considerable Avalanche danger will exist in below treeline terrain at lower elevations with minimal previous snow cover.  Dangerous avalanche conditions will exist today, travel in avalanche terrain is not recommended.

Click here to see the full forecast for 2018-11-27
November 27, 2018 at 14:18

Early Season Conditions Update #2

Ongoing periods of precipitation are expected through the end of the week with several feet of new snow possible over the mid and upper elevations. Early season conditions exist along with some avalanche concerns. Daily avalanche advisories will begin on Nov 29 if the storms materialize as forecast. 

Click here to see the full forecast for 2018-11-21
November 21, 2018 at 9:03

Early Season Conditions Update #1

Our first series of winter storms for the season are approaching our region today through Saturday.  In areas that receive the most snowfall, isolated wind slabs and minor loose wet avalanches could become possible.  Practice safe travel protocols when in or near avalanche terrain.  Daily avalanche advisories will begin as the snowpack builds.  

Click here to see the full forecast for 2018-11-07
November 7, 2018 at 11:36

Stoked for winter. Getting things up and running.

Click here to see the full forecast for 2018-10-08
October 8, 2018 at 11:55

Starting to think about winter? So are we. The forecasters are currently working on continuing education at ISSW. SAC would love to see you at the upcoming California Avalanche Workshop on Oct 20th. Check the events page for details and registration.

Click here to see the full forecast for 2018-04-23
April 23, 2018 at 5:43

General Spring Avalanche Statement

We have stopped issuing daily avalanche advisories for the 2017-2018 season. A big thanks to all who supported the avalanche center this season. Avalanche activity will invariably occur this spring. Continued daily wet snow melt-freeze cycles will occur and additional storm cycles may impact the forecast area. Some information and resources to aid in trip planning and decision making have been assembled on the advisory page.

Click here to see the full forecast for 2018-04-22
April 22, 2018 at 6:32

Areas of MODERATE avalanche danger will exist today at all elevations. A loose wet avalanche problem will develop quickly this morning in areas where a poor snow surface refreeze occurred last night. Avoid travel in or below avalanche terrain on slopes with marginally supportable to unsupportable wet snow conditions or on slopes where roller balls are occurring. This is the last avalanche advisory of the 2017/2018 season.

Click here to see the full forecast for 2018-04-21
April 21, 2018 at 6:38

Areas of MODERATE avalanche danger will exist today at all elevations as a loose wet avalanche problem occurs in response to daytime warming and snow surface melt. Avoid travel in or below avalanche terrain on slopes with marginally supportable to unsupportable wet snow conditions or on slopes where roller balls are occurring.

Click here to see the full forecast for 2018-04-20
April 20, 2018 at 6:51

CONSIDERABLE avalanche danger will develop today at all elevations as rapid warming of recent storm snow creates a loose wet avalanche problem. Avoid travel in or below avalanche terrain on slopes with marginally supportable to unsupportable wet snow conditions or on slopes where roller balls are occurring.

Click here to see the full forecast for 2018-04-19
April 19, 2018 at 6:57

Periods of intense April sun this morning may cause enough warming for some small loose wet instabilities to form in isolated areas. MODERATE avalanche danger would result from this expected warming. If the forecasted cloud cover materializes sooner than expected, loose wet instabilities may be unlikely and less avalanche danger would exist. 

Click here to see the full forecast for 2018-04-18
April 18, 2018 at 6:56

MODERATE avalanche danger could exist at all elevations today due to periods of sunshine causing rapid warming of the recent snow. Any amount of April sun could cause conditions to change in a matter of minutes and allow loose wet avalanches to become possible on sun-exposed slopes. Once any signs of warming snow or wet snow exist it is time to move to colder aspects, lower angle slopes, or switch an activity that does not involve snow.

Click here to see the full forecast for 2018-04-17
April 17, 2018 at 7:00

MODERATE avalanche danger exists at all elevations today due to rapid warming allowing loose wet avalanches to become possible and lingering wind slabs on wind-loaded slopes. The April sun will help destabilize the snowpack and conditions could change in a matter of minutes once the sun hits the new snow. Once any signs of warming snow or wet snow exist it is time to move to colder aspects, lower angle slopes, or switch an activity that does not involve snow.

Click here to see the full forecast for 2018-04-16
April 16, 2018 at 6:48

CONSIDERABLE avalanche danger exists near treeline and above treeline today. MODERATE avalanche danger exists below treeline. Today's wind slab and storm slab avalanche problems have the potential to be exacerbated by rapid warming. Loose wet avalanches are unlikely today, but could become an issue if the sun comes out from behind the clouds. The avalanche situation could be fairly complex in the backcountry today. If in doubt, seek low angle terrain without steeper terrain above.

Click here to see the full forecast for 2018-04-15
April 15, 2018 at 6:48

MODERATE avalanche danger will exist for most of today at all elevations due to a loose wet avalanche problem. As new snowfall and wind impact the forecast area this evening, avalanche danger will increase to CONSIDERABLE danger near treeline and above treeline due to a wind slab avalanche problem.

Click here to see the full forecast for 2018-04-14
April 14, 2018 at 6:49

MODERATE avalanche danger will exist at all elevations today as a loose wet avalanche problem develops in response to daytime warming. Monitor snow surface conditions and avoid travel in or below avalanche terrain in areas where the snow surface is marginally supportable to unsupportable, where human triggered roller balls are occurring, or where loose wet avalanches are actively occurring.

Click here to see the full forecast for 2018-04-13
April 13, 2018 at 6:59

The avalanche danger is MODERATE today. Rapid warming will make loose wet avalanches a more widespread problem today. In addition to the loose wet avalanches that are possible today, some small wind slabs may exist near ridgelines. 

Click here to see the full forecast for 2018-04-12
April 12, 2018 at 6:50

MODERATE avalanche danger exists at all elevations due to wind slab problems and some possible storm slab avalanche problems. Human triggered slab avalanche activity will be possible today. If less clouds develop than forecasted today, wind slab and storm slab avalanches may be easier to trigger on sun-expsosed slopes and some loose wet instabilities could also form.

Click here to see the full forecast for 2018-04-11
April 11, 2018 at 6:51

The avalanche danger may rise to MODERATE during the day if enough warming occurs for loose wet avalanches to become possible. Once the storm arrives over the forecast area this evening the avalanche danger will quickly rise to CONSIDERABLE during the night due to newly formed wind slabs and storm slabs. Slab avalanche activity will be an issue tonight and slab instabilities will linger into tomorrow. 

Click here to see the full forecast for 2018-04-10
April 10, 2018 at 6:51

Areas of MODERATE avalanche danger exist above, near, and below treeline. Poor conditions for snow surface refreeze occurred last night. Avoid travel in or below avalanche terrain in areas where the snow surface is marginally unsupportable to unsupportable wet snow.

Click here to see the full forecast for 2018-04-09
April 9, 2018 at 6:52

Areas of MODERATE avalanche danger will exist today at all elevations. As last night's snow surface refreeze melts away, loose wet avalanches will become possible. When snow surface conditions become marginally unsupportable to unsupportable, avoid travel in or below avalanche terrain.

Click here to see the full forecast for 2018-04-08
April 8, 2018 at 6:51

Areas of MODERATE avalanche danger will exist today at all elevations. As last night's snow surface refreeze melts away, loose wet avalanches will become possible. When snow surface conditions become marginally unsupportable to unsupportable, avoid travel in or below avalanche terrain.

Click here to see the full forecast for 2018-04-07
April 7, 2018 at 6:59

CONSIDERABLE avalanche danger exists at all elevations today. Natural avalanches are possible and human triggered avalanches are likely. Today's avalanche problems include widespread loose wet avalanches, possible deep slab avalanches, and maybe some wind slab avalanches at the higher elevations.  Avalanches that occur today could be large and destructive and could have severe consequences.

Click here to see the full forecast for 2018-04-06
April 6, 2018 at 6:55

MODERATE avalanche danger today will rise to CONSIDERABLE avalanche danger this afternoon and during the night as heavy rain impacts the forecast area. Loose wet avalanche problems will go from possible to likely today and some of these could involve large amounts of snow. In addtion, deep slab avalanches that would be very large and destructive and would have severe consequences may become possible tonight and tomorrow.

Click here to see the full forecast for 2018-04-05
April 5, 2018 at 6:56

MODERATE avalanche danger will exist at all elevations due to loose wet avalanche problems becoming possible again today. Rain on snow and warm temperatures will allow this problem to continue through the night. Expect the avalanche danger to increase on Friday and Saturday as a strong storm impacts the area through Saturday.  

Click here to see the full forecast for 2018-04-04
April 4, 2018 at 6:50

MODERATE avalanche danger will continue as daytime warming occurs due to a loose wet avalanche problem.  Loose wet avalanches will become possible at all elevations today.  Avoid avalanche terrain with unsupportable wet snow.

Click here to see the full forecast for 2018-04-03
April 3, 2018 at 6:50

MODERATE avalanche danger will exist as daytime warming occurs and a loose wet avalanche problem develops at all elevations.  Unstable snowpack conditions can quickly form as snow becomes unsupportable and loses strength.

Click here to see the full forecast for 2018-04-02
April 2, 2018 at 6:48

MODERATE avalanche danger will occur at all elevations today as a loose wet avalanche problem develops in response to daytime warming. Evaluate snow surface supportability on an ongoing basis and avoid avalanche terrain in areas where marginally supportable to unsupportable wet snow exists.

Click here to see the full forecast for 2018-04-01
April 1, 2018 at 6:50

MODERATE avalanche danger will develop at all elevations as a loose wet avalanche problem forms in response to daytime warming. Timing for travel in avalanche terrain is critical. In wet snow conditions, slopes can switch from stable to unstable in as little as 20 minutes.

Click here to see the full forecast for 2018-03-31
March 31, 2018 at 6:59

The avalanche danger will increase to MODERATE as the day warms up. Loose wet avalanche problems will become possible. 

Click here to see the full forecast for 2018-03-30
March 30, 2018 at 6:57

LOW avalanche danger this morning will quickly increase to MODERATE avalanche danger all elevations as the day warms up. Loose wet avalanche activity will become possible. 

Click here to see the full forecast for 2018-03-29
March 29, 2018 at 6:42

The avalanche danger will quickly increase to MODERATE at all elevations as the day warms up. Loose wet avalanche problems will be possible today.

Click here to see the full forecast for 2018-03-28
March 28, 2018 at 6:50

MODERATE avalanche danger will continue today due to a loose wet avalanche problem at all elevations.  Wind slabs have become unlikely but not impossible today in isolated areas in near treeline and above treeline terrain.  Identify areas of unstable snow and avoid specific terrain features. 

Click here to see the full forecast for 2018-03-27
March 27, 2018 at 6:52

MODERATE avalanche danger will exist today due to wind slab and loose wet avalanche problems.  Wind slabs will be possible in near and above treeline terrain.  Loose wet avalanches will become possible at all elevations as daytime warming occurs.  Heightened avalanche conditions exist on specific terrain features, identify areas of concern.

Click here to see the full forecast for 2018-03-26
March 26, 2018 at 6:50

MODERATE avalanche danger will exist at all elevations today due to a combination of loose wet and wind slab avalanche problems. The vast majority of any avalanche activity that occurs today is expected to be human triggered, but an isolated natural avalanche is not impossible today or tonight.

Click here to see the full forecast for 2018-03-25
March 25, 2018 at 6:54

MODERATE avalanche danger continues near and above treeline due to an ongoing wind slab avalanche problem. Human triggered wind slab avalanches remain possible today. Below treeline, avalanche danger is LOW.

Click here to see the full forecast for 2018-03-24
March 24, 2018 at 6:58

MODERATE avalanche danger exists in near and above treeline terrain where human-triggered wind slab avalanches are possible today. Deep slabs have become an unlikely but not impossible problem. 

Click here to see the full forecast for 2018-03-23
March 23, 2018 at 6:49

CONSIDERABLE avalanche danger exists above 8000 ft and MODERATE avalanche danger exists in areas below 8000 ft. Today's avalanche problems include lingering wind slabs, loose wet avalanches, and possible deep slab avalanches. Daytime warming and strong March sunshine could make avalanches easier to trigger on sun-exposed slopes today.

Click here to see the full forecast for 2018-03-22
March 22, 2018 at 6:53

The avalanche danger is HIGH in near and above treeline terrain and CONSIDERABLE in below treeline terrain due to a complex mix of heavy snow, rain, wind, and changing snow levels. Natural avalanches are likely today and human triggered avalanches are very likely. Today's avalanche problems include wind slabs, storm slabs, and possible deep slabs.  Wet snow instability cannot be ruled out. Travel in, near, or below avalanche terrain is not recommended.

Click here to see the full forecast for 2018-03-21
March 21, 2018 at 6:59

CONSIDERABLE avalanche danger will exist today due to a combination of loose wet, deep slab, and wind slab avalanche problems.  A moderate to strong atmospheric river storm will bring widespread rain and high elevation snow throughout the forecast area over the next couple days.  Dangerous avalanche conditions will exist with natural and human triggered avalanches expected.

Click here to see the full forecast for 2018-03-20
March 20, 2018 at 6:58

MODERATE avalanche danger will continue today due to loose wet and deep slab avalanche problems.  Loose wet avalanche activity will be possible at all elevations as rapid warming occurs and rain becomes possible this afternoon.  Deep slab avalanches remain possible in isolated areas of the forecast region.  Avalanche danger is expected to increase over the next few days as a larger storm impacts our area.

Click here to see the full forecast for 2018-03-19
March 19, 2018 at 6:58

MODERATE avalanche danger continues today for all elevations. Loose wet avalanches may occur. An unexpected deep slab avalanche was remotely skier triggered yesterday leading to a high degree of uncertainty. Strive to create larger than normal margins of safety while traveling in or below avalanche terrain today.

Click here to see the full forecast for 2018-03-18
March 18, 2018 at 6:58

MODERATE avalanche danger exists today at all elevations due to a combination of wind slab and loose wet avalanche problems. Backcountry travelers should not be surprised by the occurrence of a human triggered avalanche today. Areas of unstable snow will exist within surrounding greater areas of seemingly stable snow. Take active measures to avoid the specific terrain features where unstable snow is most likely to exist.

Click here to see the full forecast for 2018-03-17
March 17, 2018 at 6:54

Human triggered wind slab avalanches remain likely today and storm slab avalanche problems remain possible. In addition to these issues, the possiblity of an isolated deep slab avalanche cannot be ruled out. For these reasons, CONSIDERABLE avalanche danger exists at all elevations today. Some avalanches that occur today could be very large and destructive and have very serious consequences.

Click here to see the full forecast for 2018-03-16
March 16, 2018 at 6:57

HIGH avalanche danger exists for all elevations today due to widespread wind slab and storm slab avalanche problems and a possibility of isolated deep slab problems. Any avalanches that occur today could be very large and destructive and have very serious consequences. Travel in or near avalanche terrain or in lower angle terrain below avalanche terrain is not recommended.

Click here to see the full forecast for 2018-03-15
March 15, 2018 at 7:00

MODERATE avalanche danger will exist during the day due to wind slabs formed in the last 24 hours. The avalanche danger will quickly increase as the next storm impacts the forecast area starting this afternoon. The avalanche danger should rise to HIGH tonight night as wind slab and storm slab avalanche problems become widespread. Human triggered wind slabs will become very likely and storm slabs will become likely during the night. Travel in or near avalanche terrain is not recommended.

Click here to see the full forecast for 2018-03-14
March 14, 2018 at 6:55

Considerable avalanche danger will continue due to wind slab and storm slab avalanche problems.  Wind slabs will be likely in near treeline and above treeline terrain.  Storm slabs will be likely in near treeline and below treeline terrain.  Careful snowpack evaluation, cautious route finding, and conservative decision making are essential today.

Click here to see the full forecast for 2018-03-13
March 13, 2018 at 6:55

Avalanche danger will quickly be on the rise as this winter storm intensifies and snow levels begin to drop throughout the day.   Considerable avalanche danger will exist today and throughout the night at all elevations.  Loose wet avalanches will be likely due to high elevation rain today.  Wind slab and storm slab avalanche problems will become likely this afternoon as the storm increases and snow levels drop.  Dangerous avalanche conditions will exist with human and natural triggered avalanches expected.

Click here to see the full forecast for 2018-03-12
March 12, 2018 at 6:57

Avalanche danger is LOW for all elevations. Small loose wet avalanches may occur today. Deep slab avalanches are very unlikely but not impossible on a regional scale.

Click here to see the full forecast for 2018-03-11
March 11, 2018 at 6:57

Avalanche danger remains LOW for all elevations. Avalanche activity is unlikely on a regional scale. Isolated areas of unstable snow may exist somewhere within the forecast area. Small and mostly inconsequential loose wet instability may occur today. Deep slab avalanches are very unlikely but not impossible.

Click here to see the full forecast for 2018-03-10
March 10, 2018 at 7:00

The avalanche danger will remain LOW for all elevations today since significant avalanche activity is unlikely. Unlikely does not mean impossible. Some unstable snow may still lurk on isolated terrain features somewhere in the forecast area in the form of a remotely possible but very unlikely deep slab problem or small and mostly inconsequential wet snow issues in lower elevation terrain.

Click here to see the full forecast for 2018-03-09
March 9, 2018 at 7:00

LOW avalanche danger exists at all elevations today. Triggering a deep slab has become unlikely on a regional scale. Unlikely does not mean impossible and a deep slab problem could still lurk on some isolated terrain features. Some isolated loose wet issues could occur today if the forecast area receives more sun or warmer temperatures than expected.

Click here to see the full forecast for 2018-03-08
March 8, 2018 at 6:59

Even though deep slab avalanches have become more difficult to trigger and are now unlikely in most areas, they may remain possible in some specific terrain. The consequences of such an avalanche would still be dire. Some loose wet avalanche problems may also become possible today. These issues will keep the avalanche danger at MODERATE

Click here to see the full forecast for 2018-03-07
March 7, 2018 at 6:55

Moderate avalanche danger exists today due to deep slab and loose wet avalanche problems.  Triggering a deep slab avalanche is still possible on specific terrain features throughout most of the forecast area.  Evaluate terrain carefully and identify features of concern.

Click here to see the full forecast for 2018-03-06
March 6, 2018 at 6:55

Dangerous avalanche conditions continue to exist throughout the forecast region due to a deep slab avalanche problem at all elevations.  Large destructive avalanches have occurred in our area and continue to be possible today.  Loose wet avalanches will be likely today as daytime warming occurs.  Make a plan with your group that avoids terrain and exposure to the current avalanche problems.  Cautious route finding and conservative decision making are essential.

Click here to see the full forecast for 2018-03-05
March 5, 2018 at 6:59

Avalanche danger is CONSIDERABLE for all elevations. Large destructive Deep Slab avalanches are an ongoing problem with large human triggered avalanches occurring both Saturday and Sunday. Loose wet and wind slab avalanche problems may also be encountered today. This is not typical Sierra post storm conditions. If going into the backcountry, deliberately choose terrain and plan a route that avoids exposure to the current avalanche problems. Do not underestimate potential avalanche size or likelihood of triggering.

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