Archived Avalanche Advisories

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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.

Publish Datesort ascending Bottom Line
Read Full Advisory Sun Apr 23 2017

Primary avalanche problem for Sunday will focus on Loose Wet avalanches, primarily on NW-W-SW-S-SE-E aspects as the surface snow thaws. Overnight lows were above freezing in most locations. Temperatures are forecasted to climb into the 40’s and mid 50’s below 10,000’ and into the mid 30’s to low...

Read Full Advisory Sat Apr 22 2017

Primary problem for Saturday will focus on Loose Wet avalanches as the surface snow thaws. Overnight lows were above freezing in many locations. Temperatures are forecasted to climb into the 50’s and low 60’s below 10,000’ and into the mid 40’s to low 50’s above 10,000’ during the day. With the...

Read Full Advisory Fri Apr 21 2017

Natural and human triggered Loose Wet avalanches will become increasingly possible as slopes warm throughout the day. Heightened avalanche conditions may exist after substantial warming. Watch for signs of unstable snow such as large roller balls, deep ski penetration, and small point releases....

Read Full Advisory Wed Apr 19 2017

For Wednesday: Between 3 and 10 inches of new snow fell across the forecast area Tuesday above 8500’ with moderate to strong south and west winds. Winds will continue at snow transporting speeds throughout Wednesday keeping wind slabs a concern. Highs will be in the 40s by afternoon with sunny...

Read Full Advisory Mon Apr 17 2017

Monday thru Tuesday:  Monday, the primary avalanche problems are isolated Wind Slabs becoming more wide spread Tuesday and possible Wet Loose avalanches below ~8,500’.

Wind Slab – Another storm system with moderate Southwesterly winds is forecasted to pass through the region today (Monday...

Read Full Advisory Sun Apr 16 2017

Sunday:  The primary avalanche problems are isolated Wind Slabs and possible Wet Loose avalanches.

Wind Slab - Southwesterly winds are forecasted to reach threshold in the mid elevations (15 to 25 mph) and above threshold in the upper elevation (20 to 35 mph) during the day (Sunday)...

Read Full Advisory Sat Apr 15 2017

Saturday:  The primary problems will be Wet Loose and isolated Wind Slabs avalanches.

Loose Wet - As temperatures begin to climb into the 40’s and 50’s today (8000’ to 10,000’ elevation), the threat of Loose Wet avalanches will rise in the mid to lower elevations. Heightened avalanche...

Read Full Advisory Fri Apr 14 2017

Strong winds began transporting snow over ridge tops on Wednesday and increased through Thursday when we received up to 9” of new snow which added to the wind slab problem. Look for and avoid round, smooth wind slabs on the leeward side of features that have been promoting drifting. Another...

Read Full Advisory Wed Apr 12 2017

For Wednesday: As temperatures climb into the upper 40s and low 50s Wednesday, isolated loose wet avalanches on sun-heated aspects at middle and lower elevations will be possible. Increasing southwest winds will keep wind slab avalanches a possibility on isolated, leeward alpine slopes....

Read Full Advisory Mon Apr 10 2017

The primary avalanche problems for forecast period (Monday thru Tuesday) are Wet Loose releases, isolated Winds Slabs, and potential Storm Slabs. Wet Loose can be expected on solar aspects in the mid to upper elevations, all aspects below ~8000’ where a snowpack is present. Isolated Wind Slabs...

Read Full Advisory Sun Apr 9 2017

The primary avalanche problem for today (Sunday) is potentially tender Winds Slabs and possible Storm Slabs. Wind Slabs will likely be encountered primarily on NW-N-NE-E-SE aspects in the mid to upper elevations and below ~8000’ on slopes that have extensive fetches and where a snowpack is...

Read Full Advisory Sat Apr 8 2017

Between 1.5 and 2+ feet of new snow since Thursday, and strong, gusty southwest winds will create very dangerous avalanche conditions today. Natural wind slab and storm slab avalanches will be likely and human triggered avalanches very likely. Due to the strong winds and local variability, wind...

Read Full Advisory Fri Apr 7 2017

The primary avalanche concern for the forecast period will be Wind Slabs and Storm Slabs above ~7000’. 

Storm Slab – An additional one to three feet of new snow is forecasted for the region above ~8000’ over the next 24 hours, elevating the risk of Storm Slab avalanches for terrain above...

Read Full Advisory Wed Apr 5 2017

Natural and human triggered Loose Wet avalanches will become increasingly possible as slopes warm throughout the day. For Wednesday: Heightened avalanche conditions may exist after substantial warming and near rocky terrain features. Thursday: Generally safe avalanche conditions will exist, but...

Read Full Advisory Mon Apr 3 2017

Spring conditions will continue to dominate the early part of the week with sunny skies, warm temperatures, and light to moderate Northwest winds, with solar aspects warming throughout the day (easterly > southerly > westerly aspects).  In the mid to upper elevations, natural and human...

Read Full Advisory Sun Apr 2 2017

Spring conditions are on order for today with sunny skies, warming temperatures, and light Northwest winds, with solar aspects warming throughout the day (easterly > southerly > westerly).  Natural and human triggered Loose Wet avalanches will become increasingly possible as the day...

Read Full Advisory Sat Apr 1 2017

Blizard today!!  15 ft of snow in 5 hours!!  ...APRIL FOOLS!! ;-)  Spring conditions return.  Clear skies, warm temperatures, and decreasing winds will allow slopes to warm throughout the day with sun exposure (easterly, then southerly, then westerly).  Natural and human triggered small loose...

Read Full Advisory Fri Mar 31 2017

With up to 6+” of new snow in some areas (such as around Mammoth) in the last 24 hours and moderate N winds today (shifted from very strong out of the SW yesterday morning), isolated areas of new wind slab sensitive to human triggering will be the greatest avalanche concern today in areas that...

Read Full Advisory Wed Mar 29 2017

For Wednesday: As temperatures climb into the upper 40s and low 50s Wednesday, so will the risk of loose wet avalanches on sun-heated slopes at middle and lower elevations. Heightened avalanche conditions will exist on specific terrain features. Evaluate the snowpack and terrain carefully to...

Read Full Advisory Mon Mar 27 2017

As of 5AM Monday morning, there are between 1 and 3 inches of new snow in the eastern Sierra, primarily north of Mammoth and at elevations above 7,000’. Southwest winds accompanied this fast moving storm and they will shift more to the north tonight (Monday) and Tuesday as temperatures rebound....

Read Full Advisory Sun Mar 26 2017

Mammoth - up to a foot+ of new snow fell in some areas Saturday with moderate SW winds, small to large wind slabs is the greatest avalanche concern for today primarily on NW-N-NE-E-SE aspects in the mid to upper elevations , followed by loose wet snow as temperatures rise during the day...

Read Full Advisory Sat Mar 25 2017

With up to a foot+ of new snow in some areas since yesterday and moderate SW winds, small to large wind slabs will be the greatest avalanche concern for today, followed by loose wet snow in the afternoon as skies clear and temperatures rise.  Natural avalanches will be possible, and human...

Read Full Advisory Fri Mar 24 2017

As SW winds increase and new snow accumulates this afternoon with 4-10” possible before nightfall, windslab avalanches will be of increasing concern throughout the day.  Natural avalanches will become possible and human trigger avalanches likely on steep slopes where winds deposit snow. ...

Read Full Advisory Wed Mar 22 2017

With between 4 and 10 inches of snow since Tuesday morning and moderate to strong winds, expect sensitive wind slabs above about 8500’ on leeward slopes as winds continue through Thursday. For Wednesday, southwest winds will favor wind slab formation on northwest through southeast aspects....

Read Full Advisory Mon Mar 20 2017

Monday – one more day of spring like conditions with Loose Wet avalanches being the dominant problem for Monday before winter returns Tuesday. Cloud cover and moderate winds Monday will likely slow surface thawing in the low to mid elevations, while the upper elevations the surface snow will...

Read Full Advisory Sun Mar 19 2017

Spring like conditions will continue to dominate Sunday with the surface snow warming through the day (Easterly > Southerly > Westerly), natural and human triggered small loose wet avalanches possible as the snow surface softens. An approaching storm system increased cloud cover overnight...

Read Full Advisory Sat Mar 18 2017

Spring like conditions will continue to dominate Sunday with the surface snow warming through the day (Easterly > Southerly > Westerly), natural and human triggered small loose wet avalanches possible as the snow surface softens. An approaching storm system increased cloud cover overnight...

Read Full Advisory Fri Mar 17 2017

Spring conditions continue.  As slopes warm throughout the day, starting with east-facing, then south, then west, natural and human triggered small loose wet avalanches will become increasingly possible.  Timing of these avalanches will also depend on elevation, winds, and cloud cover.  Even...

Read Full Advisory Wed Mar 15 2017

Natural and human triggered loose wet avalanches will become more likely as extensive solar radiation saturates the snow. The majority of these avalanches should be small, but larger avalanches may be possible where the snowpack retains more heat. Timing of these avalanches will depend on aspect...

Read Full Advisory Mon Mar 13 2017

Monday thru Tuesday - the main avalanche concern is Loose Wet avalanches. Unseasonably warm temperatures this past week have produced spring-like conditions on most aspects and elevations with a few pockets on North to Northeast aspects spared in the mid to upper elevations. High pressure will...

Read Full Advisory Sun Mar 12 2017

Sunday - the main avalanche concern is Loose Wet releases. Unseasonably warm temperatures forecasted for Sunday will produce small loose-wet point releases on E-SE-S-SW-W in the mid to upper elevations. Lower Elevations the range will expand to include NW/NE as well. Natural releases likely on...

Read Full Advisory Sat Mar 11 2017

Warming slopes resulting in small loose-wet point releases is the main avalanche concern for today (Saturday).  These could be large enough to knock riders of balance, and in rare instances could entrain enough snow to potentially bury a person.  These natural releases will be increasingly...

Read Full Advisory Fri Mar 10 2017

Warming slopes resulting in small loose-wet point releases is the main avalanche concern for today (Friday).  These could be large enough to knock riders of balance, and in rare instances could entrain enough snow to potentially bury a person.  These natural releases will be increasingly likely...

Read Full Advisory Wed Mar 8 2017

For Today: There will most likely be small point releases in specific areas and potentially large avalanches in isolated areas. Watch for unstable snow like pinwheels or roller balls. The highest danger will likely be found on steep slopes where solar radiation is the most intense. Middle and...

Read Full Advisory Mon Mar 6 2017

The primary avalanche concern for Monday thru Tuesday will be: Wind Slab avalanches and isolated Storm Slab avalanches.

Wind Slab – Moderate to Strong Southwesterly to Westerly winds and plenty of transportable snow have formed sensitive Wind Slabs forming primarily on NW-N-NE-E-SE-S...

Read Full Advisory Sun Mar 5 2017

The primary avalanche concern for Sunday will be small to large, Wind Slab avalanches (NW-N-NE-E-SE-S) and developing Storm Slab avalanches as snowfall accumulates through the day.

Wind Slab – Moderate to Strong Southwesterly (Sunday) to Westerly (Sunday night) winds and plenty of...

Read Full Advisory Sat Mar 4 2017

Very high winds from the SW will likely form isolated windslabs today at all elevations in areas where loose snow still exists for transport.  These potentially sensitive wind slabs are most likely to be found in areas that are typically somewhat sheltered from less-strong winds.  Human...

Read Full Advisory Fri Mar 3 2017

Mostly stable avalanche conditions will exist through the backcountry today (Friday).  This doesn’t mean that avalanches will be impossible.  Warm temperatures could result in natural loose-wet point releases on steep sunny slopes that aren’t kept cool by today’s breezy conditions, and small...

Read Full Advisory Wed Mar 1 2017

Wind slabs will remain the primary avalanche concern for Wednesday. Though unlikely, it will not be out of the question for a backcountry traveler to trigger these recently deposited slabs on isolated terrain features at mid and upper elevations today. Loose wet avalanches will also become a...

Read Full Advisory Mon Feb 27 2017

The primary avalanche concern for Monday thru Tuesday will be newly formed Wind Slabs primarily on NW-N-NE-E-SE-S aspects in the middle and upper elevations. However, moderate/gusty winds and localized channeling in the mid elevations have formed Wind Slabs well below ridgelines and on...

Read Full Advisory Sun Feb 26 2017

The primary avalanche concern for Sunday will be newly formed Wind Slabs primarily on NW-N-NE-E-SE aspects as winds increase from the SW in the middle and upper elevations. Older, less sensitive Wind Slabs that formed mid-week due to Southerly and Westerly winds. Saturday winds veered to the...

Read Full Advisory Sat Feb 25 2017

Although new snowfall ended Wednesday morning, moderate upper-elevation winds out of the SW to W, and yesterday out of the N in areas, have continued to load leeward slopes.  Isolated human triggered avalanches will be likely and natural avalanches still possible above tree line in steep areas...

Read Full Advisory Fri Feb 24 2017

Although snowfall ended Wednesday morning, upper elevation moderate winds out of the SW to W have continued to load leeward slopes.  Human triggered avalanches will be likely and natural avalanches possible in steep areas that have continued to receive wind-loaded snow.  These sensitive areas...

Read Full Advisory Wed Feb 22 2017

The primary avalanche concern for Wednesday will be small to very large, widespread wind slabs on leeward slopes at all elevations. Storm slab avalanches will also remain possible in steep, sheltered terrain. On slopes steeper than about 35 degrees, natural avalanches with be likely, and human...

Read Full Advisory Mon Feb 20 2017

The primary avalanche concern for the forecast period will be Wind Slabs and Storm Slabs above ~7000’. 

Storm Slab - One to five feet of new snow is forecasted for the region above ~7000’ over the next 24 hours, which will elevate the risk of Storm Slab avalanches for terrain above ~7000...

Read Full Advisory Sun Feb 19 2017

Wind Slab -With 12” to 30” of new transportable snow, the primary avalanche concern for the forecast period will be wind slabs at middle and upper elevations as moderate Westerly to Southwesterly pre-frontal winds increase over the region ahead of the next storm system due to move in Sunday...

Read Full Advisory Sat Feb 18 2017

With 1 to 2.5’ of new snow since yesterday morning (6”-12” overnight), heightened avalanche danger exists in many areas.  Natural wind slab avalanches are possible in isolated areas at upper elevations that continue to recieve wind deposition or as a result of cornice failure, and human...

Read Full Advisory Fri Feb 17 2017

A winter weather advisory is now in effect thru 10am Saturday morning.

Avalanche danger will rise throughout the day today as new snow accumulates and increasing winds out of the South will form new fresh sensitive wind slabs on non-southerly facing slopes exposed to the...

Read Full Advisory Wed Feb 15 2017

The primary avalanche concern for Wednesday thru Thursday will be increasing wind slabs at middle and upper elevations as pre-frontal winds increase Thursday. Wednesday, ahead of the next system warm temperatures will maintain the threat of loose wet avalanches on solar aspects at middle and...

Read Full Advisory Mon Feb 13 2017

The primary avalanche concern for Wednesday thru Thursday will be increasing wind slabs at middle and upper elevations as pre-frontal Southwesterly winds increasing Thursday. Wind Slabs will likely be encountered primarily on NW-N-NE-E-SW aspects but may be encountered on other aspects due to...

Read Full Advisory Sat Feb 11 2017

Starting on Monday, February 13th, we will be issuing five Avalanche Advisories per week!

Primary concern for the next 48 hours:

Wind Slab – The combination of 10” to 30 + inches of new transportable snow with moderate North to Northeast winds will form sensitive...

Read Full Advisory Sat Feb 11 2017

Primary concern for the next 48 hours

Wind Slab – The combination of 10” to 30 + inches of new transportable snow with moderate North to Northeast winds will form sensitive Wind Slabs will on NW-W-SW-S-SE-E aspects in the mid to upper elevations below ridgelines and in and around terrain...

Read Full Advisory Thu Feb 9 2017

High wind warning in effect from 6am thru 4pm Thursday.

Winter Storm Warning in effect from 4pm Thursday afternoon to 4am Saturday.

Thursday:  Elevated avalanche danger exists today with complex snow stability issues.  With very warm temperatures, recent heavy...

Read Full Advisory Tue Feb 7 2017

Primary concern for the next 48 hours: 

Wind Slab – sensitive Wind Slabs will likely be encountered on NW-N-NE-E-SE aspects in the mid to upper elevations below ridgelines and in and around terrain features that promote drifting and crossloading. The strong winds may form Wind Slabs...

Read Full Advisory Sat Feb 4 2017

Elevated avalanche danger exists for the next 72 hours due to new snowfall and moderate to strong SW winds.  Half to a foot of new dense snow fell Thursday and Friday accompanied by moderate to strong SW winds which will continue into next week.  Up to another foot and a half of new snow is...

Read Full Advisory Thu Feb 2 2017

Primary concern for the next 48 hours 

Wind Slab - Moderate to strong Southwesterly winds, above 10,000’, will form sensitive Wind Slabs on NW-N-NE-E-SE aspects in the mid to upper elevations below ridgelines and in and around terrain features that promote drifting and crossloading. Be...

Read Full Advisory Tue Jan 31 2017

For Tuesday and Wednesday Natural and human triggered avalanches are unlikely at low to mid elevations.  Small isolated pockets of wind slab may be found in isolated terrain features at upper elevations that could be sensitive to human triggering.  While it is unlikely that such a release would...

Read Full Advisory Sat Jan 28 2017

Primary concern for the next 72 hours

Isolated newly formed wind slabs sensitive to human triggering in mid to upper elevations, primarily found under ridgelines and near and adjacent to exposed terrain features that promote drifting and loading. Friday, Northeast to Easterly winds formed...

Read Full Advisory Thu Jan 26 2017

The primary concern for the next 48 hours is isolated and recently developed wind slabs that are sensitive to human triggering on mid to upper elevation slopes that are exposed to the wind. On Thursday these are most likely to be found on NW-N-NE-E-SE facing slopes with increasing concern with...

Read Full Advisory Tue Jan 24 2017

Primary concern for the next 48 hours

Wind Slab is the primary concern for the forecast period – exposed slopes and open trees (primarily mid to upper elevations), where Southwesterly storm winds loaded NW-N-NE-E-SE aspects producing extensive Wind Slabs along ridgetops, extreme terrain,...

Read Full Advisory Sat Jan 21 2017

*Winter Storm Warning in effect from now until 4am Monday

Saturday:  With 1-2ft of additional new snow since Friday morning along with moderate to strong SW winds, and the possibility of continued light snowfall today with continued moderate SW winds...

Read Full Advisory Thu Jan 19 2017

Primary concern for the next 48 hours

Wind Slab and Storm Slab potential has risen, primarily in the mid to upper elevations, due to the first in a series of storms transits the area with moderate to strong winds, which has increased the threat of avalanches in the forecast area....

Read Full Advisory Tue Jan 17 2017

Tuesday:  Human triggered avalanches will be unlikely in most areas, but possible especially at high elevations over 11,000’ on NW-W-S-SE slopes just below ridgelines and in extreme terrain due to high elevation NE winds that have been transporting snow. 

...

Read Full Advisory Sat Jan 14 2017

Primary concern for the next 72 hours

Low to mid elevations are showing signs of adjusting to the new load from the latest snow cycle with Storm Slab, Deep Slab, and Persistent slab concerns slowly improving but Wind Slabs remain a concern due to Northeasterly winds that picked-up during...

Read Full Advisory Thu Jan 12 2017

*update Friday 7:30am:  in addition to points mentioned below, increased concern exists for sensitive windslabs due to Moderate winds out of the NE at upper AND MID elevations (9,000' and above).  Human triggered avalanches will be very likely on leeward terrain features where newly wind...

Read Full Advisory Tue Jan 10 2017
  • Blizzard warning in effect until 10 am PST Wednesday...dangerous blizzard conditions due to heavy snow and strong winds will continue today through Wednesday morning. Periods of moderate to heavy snow will continue through Wednesday night.
  • Winter storm warning in effect from 10 am...
Read Full Advisory Tue Jan 10 2017

!!THIS IS JUST A SAMPLE ADVISORY!!

A blizzard warning in effect until 10 am PST Wednesday...dangerous blizzard conditions due to heavy snow and strong winds will continue today through Wednesday morning. Periods of moderate to heavy snow will continue through Wednesday...

Read Full Advisory Sat Jan 7 2017

A strong Atmospheric River event is on tap to bring copious amounts of snow and rain to the forecast area from Saturday though Monday.  A Complex mix of dangerous avalanche problems are expected for Saturday, peaking on Sunday and continuing thru Monday. 

...

Read Full Advisory Thu Jan 5 2017

* ...Winter Storm Warning now in effect until 10 am PST Thursday...

Primary concern for the next 48 hours –

Thursday – Very dangerous avalanche conditions. Travel in avalanche terrain not recommended. Natural avalanches likely; human- triggered avalanches very likely due to wide...

Read Full Advisory Tue Jan 3 2017

*Winter Storm Warning in effect for our forecast area from 4pm Tuesday through 4am Thursday*

Tuesday:  Lingering small isolated pockets of wind slab are likely to exist on exposed slopes facing SE-E-N-NW at tree line and above that may be...

Read Full Advisory Sat Dec 31 2016

Primary concern for the next 72 hours –

SaturdaySmall isolated Wind Slabs on N-W-S-SW aspects along ridgetops and in and around exposed terrain features that promote drifting or extreme terrain in the upper elevations, generally limited to areas where...

Read Full Advisory Thu Dec 29 2016

Overall fairly stable snow conditions will persist through the forecast area for the next 48 hours (Thursday and Friday).  For Thursday some concern exists in steep alpine terrain on slopes facing NW-N-E for small isolated windslabs that may remain sensitive to human triggering...

Read Full Advisory Tue Dec 27 2016

Isolated Wind Slabs along ridgetops and in and around exposed terrain features that promote drifting in the mid to upper elevations. These may be  encountered primarily on N-E-S aspects. Natural avalanches are unlikely, triggered releases are possible where wind slabs have formed. Usual caution...

Read Full Advisory Sat Dec 24 2016

Heavy snowfall began yesterday morning and continued until midnight last night dropping 1-2ft of new snow accompanied by moderate to strong winds.  Wind slabs on exposed slopes at mid to upper elevations will be the greatest concern, especially as winds are forecasted to continue to be high...

Read Full Advisory Thu Dec 22 2016

* ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM FRIDAY TO 4 PM PST SATURDAY...

Primary concern for the next 48 hours - As the next short wave moves into the region midday Friday, the potential for: Storm Slabs (above ~8,000’) and Wind Slabs on NW-N-NE-E-SE aspects in the mid to...

Read Full Advisory Tue Dec 20 2016

The greatest avalanche concern for this next 48 hour period begins Tuesday afternoon with the possible development of new small windslabs on a variety of aspects at elevations over 9,000’, as winds are forecasted to increase slightly Tuesday afternoon into Wednesday morning.  Human triggered...

Read Full Advisory Sat Dec 17 2016

Primary concern for the next 72 hours are: Storm Slabs above ~8,500’. Wind Slabs on NW-N-NE-E-SE aspects in the mid to upper elevations. Additional concern, Wind Slabs or Storm Slabs avalanches stepping down and triggering a much larger Persistent Slab. Use extra caution in terrain 35 degrees...

Read Full Advisory Thu Dec 15 2016

A significant winter storm is moving into our region Thursday morning, and will bring substantial amounts of snow thru Friday morning accompanied by high SW winds.  Dangerous avalanche conditions will develop.  Beginning Thursday afternoon, and especially Thursday night and into...

Read Full Advisory Tue Dec 13 2016

Primary concern for the next 48 hours is strong winds and the formation of wind slabs on NW-N-NE-E-SE aspects in the mid to upper elevations. Secondary concerns, focused on small isolated storm slabs on terrain 35 degrees and steeper on NW-N-NE-E aspects in the mid to upper elevations as well as...

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Read Full Advisory Mon Apr 28 2014

The avalanche danger is MODERATE. The likelihood of wet loose avalanches increases today as snow at or near the surface becomes wet. The danger will rise through the day as warming temperatures and direct sun soften surface crusts, melt the bonds between snow grains, and create soft, cohesion-...

Read Full Advisory Sat Apr 26 2014

New snow and very strong winds have created dangerous wind slabs on exposed slopes on north to east facing terrain today in the Mammoth area.  These areas  have a CONSIDERABLE danger rating. Strong southwest to west winds yesterday afternoon and overnight transported the new snow into unstable...

Read Full Advisory Thu Apr 24 2014

The avalanche danger rating is estimated to be LOW early this morning but will soon increase to MODERATE and possibly higher later today and tonight. Eight to 12” of new snow is forecasted to fall today and tonight along with sustained 60-80 mph west and southwest winds.  Winds are blowing 50-60...

Read Full Advisory Wed Apr 23 2014

The avalanche danger is mostly Low but you may find some Moderate: 1) on slopes with lingering wind slabs from yesterday's wind along the upper elevation ridges and 2) if we get significant sun warming today, the danger will rise to Moderate for wet sluffs on steep slopes that are getting wet...

Read Full Advisory Sun Apr 20 2014

The avalanche danger will rise from LOW this morning to MODERATE on all steep slopes 35 degrees or greater above 10,000 ft. in the Tioga, Mammoth and Rock Creek areas. Daytime warming and sunshine will melt through the overnight refreeze holding the snowpack together. Human triggered loose wet...

Read Full Advisory Fri Apr 18 2014

The avalanche danger is mostly Low but this morning but rises to MODERATE as snow heats up with sun and cloud cover adding additional energy from the greenhouse effect.  

It's easy to tell what's happening out there, but there is alot of variability and tsnow conditions can change rapidly...

Read Full Advisory Wed Apr 16 2014

The avalanche danger is MODERATE.  This morning, the avalanche danger is LOW but by mid day, wet avalanches will be possible in steep, sunny, alpine  terrain as  sunshine softens and melts the snow surface. Avalanche conditions will change rapidly with the influence of warming or sun so plan to...

Read Full Advisory Sun Apr 13 2014

The overall avalanche danger is MODERATE today. Wet avalanches are possible in steep, sunny, alpine terrain when today's sunshine softens and melts the snow surface. Small cornices may be sensitive to your weight along upper elevation ridgelines

Read Full Advisory Thu Apr 10 2014

The avalanche danger is MODERATE today on all north to east facing high elevation slopes. Continued warm temperatures, high clouds and sun will make wet avalanches possible in steep terrain on all east to north facing aspects.  In Rock Creek, wet slab avalanches are possible today on north to...

Read Full Advisory Wed Apr 9 2014

Clouds moved in overnight and morning temperatures above 9,000 ft range from 32 to 39 degrees. The snow did not get a good refreeze overnight and with get a chance to freeze. High clouds combined with April sun will make wet loose and wet slab avalanche possible today. Natural and human...

Read Full Advisory Sun Apr 6 2014

The avalanche danger is generally LOW this morning and will rise to MODERATE on slopes steeper than 35 degrees during the day with intense solar heating of the snow. 

Loose wet snow avalanches are possible today on SE-E and northerly aspects especially in the Mammoth Lakes Basin. Snow...

Read Full Advisory Fri Apr 4 2014

The avalanche danger is generally LOW today. Isolated areas of wind drifted snow and soft slabs can be found below ridgelines in steep north to east facing alpine terrain that could be sensitive to human triggering. Most of the wind slabs that formed during and after the storm have probably...

Read Full Advisory Tue Apr 1 2014

The avalanche danger is MODERATE on steep north and east facing slopes. Small human-triggered soft slabs, wind slabs and sluffing of the new snow are possible today in both exposed and sheltered steep terrain. Natural slides are unlikely.

Read Full Advisory Mon Mar 31 2014

The avalanche danger is MODERATE in steep, wind-loaded upper elevation terrain. Expect variably sensitive, new 8-12" deep wind slabs near ridgelines on north facing  aspects. The avalanche danger rating is LOW on slopes in tree covered terrain.  Expect the avalanche danger rating to increase...

Read Full Advisory Sat Mar 29 2014

The avalanche danger is CONSIDERABLE today on north facing high elevation slopes. Natural avalanches are possible on steep, wind drifted slopes and human triggered avalanches are likely on steep north to east facing...

Read Full Advisory Thu Mar 27 2014

The avalanche danger is MODERATE in steep alpine terrain. Wind slabs formed on Tuesday on north through east facing aspects could be sensitive to skier triggering and human triggered avalanches are possible today. Mid elevations in the trees did not received the snow fall amounts and wind...

Read Full Advisory Thu Mar 27 2014

The avalanche danger rating has increased to MODERATE along leeward ridgelines in alpine terrain. Watch for obvious signs of loading such as cornices, rounded drifts and rippled texture of the snow surface.  Avoiding slopes where these signs are present will be a simple way to stay out of...

Read Full Advisory Wed Mar 26 2014

The avalanche danger is LOW this morning but will increase to MODERATE on mid to upper elevation north facing slopes from the June Mountain area south to Rock Creek. Moderate to heavy snowfall and strong southwesterly winds will form additional storm and wind slabs in open...

Read Full Advisory Sun Mar 23 2014

The avalanche danger is generally LOW for the Mammoth Basin and June Mountain areas. The avalanche danger rating for the Rock Creek area is Low, though caution is advised in steep terrain where a thick layer of depth hoar continues to show the snowpack is weak. Low danger never means no danger....

Read Full Advisory Fri Mar 21 2014

The avalanche danger is generally LOW for the Mammoth Basin and June Mountain areas. On high elevation north facing slopes in Rock Creek, a thick layer of large depth hoar continues to demonstrate weakness: though it is unlikely, a heavy load like a cornice drop could cause the depth hoar to...

Read Full Advisory Wed Mar 19 2014

The avalanche danger is generally LOW for the Mammoth BAsin, the June Mtn backcountry and Rock Creek. Small patchy ares of wind drifts formed during Monday's wind event and are found below ridgetops and along rock ridges in the Mammoth Lakes Basin. As the sun warms the snow, it will change the...

Read Full Advisory Sun Mar 16 2014

The overall avalanche danger is generally LOW for the Mammoth Basin, Rock Creek and June Mountain areas. Cold overnight temperatures have allowed another solid refreeze of the snow surface at alpine and mid elevations in the trees. Wet loose snow activity will be limited in alpine zones but the...

Read Full Advisory Fri Mar 14 2014

The overall avalanche danger is generally LOW for the Mammoth Basin and June Mountain areas.  Even though the danger rating is LOW, small avalanches can occur in isolated areas on slopes steeper than 35 degrees. Watch for Isolated areas of fresh wind slabs today at mid slope locations where...

Read Full Advisory Wed Mar 12 2014

The overall avalanche danger is generally LOW for the Mammoth Basin and June Mountain areas.  Even though the danger rating is LOW, small avalanches can occur in isolated areas on slopes steeper than 35 degrees. Isolated areas of small wind slabs may be found in alpine terrain and small wet...

Read Full Advisory Sun Mar 9 2014

The avalanche danger is rated generally LOW for the Mammoth Basin and June Mountain areas. Intense sun and warm temperatures could produce wet loose snow avalanches today. 

Read Full Advisory Fri Mar 7 2014

The avalanche danger is rated generally LOW for the Mammoth Basin and June Mountain areas. Yesterdays’ strong gusty winds blew snow onto many different aspects in alpine terrain. Look for sensitive drifts in steep north through east facing terrain and watch for small wind drifts and fresh wind...

Read Full Advisory Wed Mar 5 2014

The possibility of human triggered avalanches has diminished, however, people will still be able to trigger very isolated areas of wind drifted snow in steep alpine terrain where the snowpack is shallow. These isolated drifts vary over short distances. There is a pockety MODERATE avalanche...

Read Full Advisory Sun Mar 2 2014

The avalanche danger is rated CONSIDERABLE in terrain steeper than 35 degrees above treeline. Slab avalanches will likely fail on mid storm weakness or step down to deeper layers and create a larger avalanche.  Avoid wind-loaded slopes, steep consequential terrain, and large avalanche path...

Read Full Advisory Sat Mar 1 2014

The avalanche danger is HIGH this morning in the backcountry around June Mountain, the Mammoth Lakes Basin and Rock Creek.

Over the past 24 hours, close to 2 feet of snow and 2 inches of water has fallen at the 9,000 ft elevations on June Mountain, Mammoth Mountain and in Rock Creek.  ...

Read Full Advisory Fri Feb 28 2014

HIGH avalanche danger rating applies to the June Mountain backcountry and the Mammoth Lakes Basin.

Heavy snow and strong winds have created a HIGH avalanche danger this afternoon and into Saturday. Dangerous avalanche conditions exist on north through east aspects from 8,000 to the alpine...

Read Full Advisory Fri Feb 28 2014

Snow is beginning to fall this morning as a very strong storm moves into the area. This morning the avalanche danger is CONSIDERABLE in alpine zones above treeline and MODERATE at mid elevations. As storm snow accumulates later this morning, the avalanche danger could increase to HIGH over the...

Read Full Advisory Thu Feb 27 2014

The avalanche danger in the Mammoth Lakes and June Mountain areas is rated CONSIDERABLE this morning. High precipitation rates and moderate southwest and southerly winds created unstable conditions on north to east facing slopes at tree line and in alpine terrain. Today, continued snow and wind...

Read Full Advisory Tue Feb 25 2014

The avalanche danger is LOW this morning but will increase as the first of two storms impacts the Mammoth area. Expect the avalanche danger to increase to CONSIDERABLE or HIGH by Thursday. Over 20 inches of snow above 9,000 ft will accumulate later today and tonight. With a second storm dropping...

Read Full Advisory Sun Feb 23 2014

The avalanche danger is generally LOW; human triggered avalanches are unlikely on most slopes. Watch out for isolated areas above treeline where the snowpack is shallow.  Unstable slopes are very isolated and human triggered avalanche are unlikely - but not impossible. Identify and avoid thin...

Read Full Advisory Wed Feb 19 2014

A MODERATE danger exists on north facing slopes steeper than 35 degrees in exposed alpine terrain. Strong winds today will form fresh deposits of wind drifted snow on top of areas of unstable  snow from Sunday's snowfall.These avalanches may be confined to the upper 8 inches of the snow pack or...

Read Full Advisory Sun Feb 16 2014

The avalanche danger is MODERATE on steep north facing slopes in alpine terrain-wind drifts and wind slabs have been forming and building since yesterday.  Human triggered avalanches are possible on wind loaded slopes above treeline. Wind slabs and new storm slabs are loading the buried weak...

Read Full Advisory Fri Feb 14 2014

The avalanche danger is MODERATE on steep north to east facing slopes in alpine terrain in the Mammoth Basin. Human triggered avalanches are possible on slopes steeper than 35 degrees where weak facets and depth hoar dominate the lower half of the snowpack. 

At mid-elevations in the trees...

Read Full Advisory Wed Feb 12 2014

The avalanche danger rating is rated MODERATE at mid elevations and high elevations in the Mammoth Basin. Natural avalanches and widepsread signs of instability such as cracking and collapsing have diminished but the trickiness of determing the stability of exposed alpine slopes has gone up....

Read Full Advisory Tue Feb 11 2014

There are no observations from the backcountry to justify continuing the CONSIDERABLE danger rating for another 24 hours or lowering the danger rating to MODERATE. The next avalanche advisory will be posted Wednesday morning. 

Read Full Advisory Mon Feb 10 2014

The avalanche danger remains CONSIDERABLE at middle and upper elevations today. Natural avalanches are possible and human-triggered avalanches are likely today. The combination of two feet of new snowfall and strong winds created widespread instability by overloading wind drifted snow from...

Read Full Advisory Sun Feb 9 2014

The avalanche danger is CONSIDERABLE at middle and upper elevations. Natural avalanches are possible and human-triggered avalanches are likely today. The combination of one to two feet of new snowfall and strong winds are creating widespread instability, overloading wind drifted snow from Friday...

Read Full Advisory Sat Feb 8 2014

The avalanche danger this morning is MODERATE near treeline and above treeline on all north facing slopes above 9,000 ft 35 degrees and steeper.  Wind slab, storm slab and deep persistent slab avalanches are all possible today.

Read Full Advisory Thu Feb 6 2014

The avalanche danger this morning is generally LOW with ares of MODERATE danger on steep north facing slopes due to buried persistent weak layers at the bottom of the snowpack. A winter storm with extended periods of dense snow, very strong southwest winds and gradually warming temperatures will...

Read Full Advisory Wed Feb 5 2014

The avalanche danger is MODERATE on slopes steeper than 35 degrees and LOW on less steep slopes at middle and upper elevations in the Mammoth Lakes Basin. North facing slopes near tree line (subalpine terrain) are most suspect due to more widespread weak snow at the base of the snowpack.

Read Full Advisory Sun Feb 2 2014

The avalanche danger is moderate at middle and upper elevations in the Mammoth Lakes Basin. Human triggered avalanches are possible on steep terrain where storm snow and wind drifts  exist above crusts and weak faceted snow. You can also trigger avalanches on steep shaded slopes at and below...

Read Full Advisory Sat Feb 1 2014

The avalanche danger rating is MODERATE. Human triggered avalanches are possible on steep mid and upper elevation north facing terrain in the Mammoth Lakes Basin.

 

Read Full Advisory Fri Jan 31 2014

The avalanche danger rating is CONSIDERABLE. Human triggered avalanches are likely on steep mid and upper elevation north facing terrain in the Mammoth Lakes Basin. Dangerous avalanche conditions exist where newly formed wind drifts and slabs have formed.

Backcountry travel on and below...

Read Full Advisory Thu Jan 30 2014

New snow is falling this morning and will increase in intensity by mid morning. There is not enough new snow yet to issue an avalanche danger rating but I am confident the avalanche danger will quickly rise to Considerable this afternoon as snow accumulates over 12-16 inches....

Read Full Advisory Wed Jan 29 2014

SPECIAL AVALANCHE STATEMENT

The first winter storm in almost 2 months will impact the area tonight and tomorrow. One to two feet of snow is expected to fall in the mountains abovoe 8,500 ft tonight and most of the day tomorrow. 

While expected snowfall amounts do not meet the level...

Read Full Advisory Wed Jan 22 2014

We are waiting for snow before advisories can be posted. See the update below.

Read Full Advisory Sun Jan 19 2014

There is not enough snow cover to issue avalanche advisories. Read the discussion for updated information and pictures. 

Read Full Advisory Fri Jan 17 2014

We will begin issuing avalanche advisories and danger when there is enough snow. For an updated snowpack discussion, please read the discussion section. 

Read Full Advisory Wed Jan 15 2014

The dry weather continues. There is not enough snow to warrant avalanche danger ratings. Once snow comes, advisories will resume. For updated snowpack conditions, see the text discussion. 

Read Full Advisory Thu Jan 9 2014

We are waiting for snow. There is not enough snow to warrant regional danger ratings. For an update on snowpack conditions, see the text discussion.

Read Full Advisory Sun Jan 5 2014

There is not enough snow to issue advisories at this time. Read on to learn about snowpack conditions in our area.

Read Full Advisory Fri Jan 3 2014

There is not enough snow cover to issue avalanche advisories. A snowpack discussion is available as a text discussion.

Read Full Advisory Wed Jan 1 2014

We are still without sufficient snowcover to warrant daily avalanche advisories.Snowpack observations have begun and read the Recent observations for more information. Daily avalanche advisories will begin as soon as conditions warrant.

Read Full Advisory Fri Dec 27 2013

We are still without sufficient snow cover to warrant daily avalanche advisories. I am making snowpack observations and posting them to the observations section.

Read Full Advisory Tue Dec 24 2013
Read Full Advisory Thu Nov 28 2013

There is not enough snow for recreating in the backcountry, therefore there is no avalanche danger rating.

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