Avalanche Forecast Archives

2015 – 2016 Season

Avalanche Advisory for Tuesday, March 8, 2016

Date: March 8, 2016
...Your best bet is to play it safe. Avoid the big slopes at the height of the day. Stability will be changing throughout the day - DO NOT ASSUME THAT TRACKS ON A SLOPE ARE AN INDICATOR OF STABILITY.

Avalanche Advisory for Monday, March 7, 2016

Date: March 7, 2016
Tuckerman and Huntington Ravines will have CONSIDERABLE avalanche danger today. Natural avalanches will be possible and human-triggered avalanches will be likely. Careful snowpack and weather evaluation, cautious route-finding and conservative decision-making are essential. AVALANCHE PROBLEM:  Light density snow (2-3cm) laying in the alpine zone, which fell Friday, coupled with new snow falling on the summit this […]

Avalanche Advisory for Sunday, March 6, 2016

Date: March 6, 2016
Tuckerman Ravine has Moderate and Low avalanche danger.  Sluice, Lip, Center Bowl, and Chute have Moderate avalanche danger. Natural avalanches are unlikely but human-triggered avalanches are possible. Evaluate snow and terrain carefully. Lobster Claw, Right Gully, Left Gully and Hillman’s Highway have Low avalanche danger. Natural and human-triggered avalanches are unlikely. Watch for unstable snow on […]

Avalanche Advisory for Saturday, March 5, 2016

Date: March 5, 2016
...the 2-3cm of very light density new snow, that fell yesterday and last night, will add complexity to the mix of hazards. If forecast gusty winds play out and continue to move the new snow, more wind slabs will develop. These wind slabs are likely to be sensitive to a human-trigger due to the light density of the potential weak layer...

Avalanche Advisory for Friday March 4th, 2016

Date: March 4, 2016
AVALANCHE PROBLEM: Wind Slab is the avalanche problem today. 8” of snow on Wednesday, and continued light loading on Thursday, has generated wind slabs that are now between 24-48 hours old. The existing wind slab vary from some deep hang fire above crown lines from Wednesday’s avalanche cycle, to firm thinner slabs below crown lines and on exposed slopes to high winds. It is a reasonable day for an avalanche savvy traveler to be in avalanche terrain, but keep your radar on and have thoughtful choices about which slabs to engage and which to avoid.

Avalanche Advisory for Thursday, March 3, 2016

Date: March 3, 2016
Tuckerman Ravine has Considerable and Moderate avalanche danger.  Sluice, Lip, Center Bowl, Chute, Left Gully and Hillman’s Highway have Considerable avalanche danger. Continued wind loading keeps the potential for natural avalanches in these locations possible with human-triggered avalanches likely. Lobster Claw and Right Gully have Moderate avalanche danger. Natural avalanches are unlikely but human-triggered avalanches are possible. Evaluate […]

Avalanche Advisory for Wednesday, March 2, 2016

Date: March 2, 2016
Travel in avalanche terrain is not recommended...Today will start with elevated avalanche danger, and today's weather will bring still increasing danger. Wind slabs will be building on all aspects. If the ravine elevations transition to rain in the early morning, avalanche danger may quickly spike....

Avalanche Advisory for Tuesday, March 1, 2016

Date: March 1, 2016
Wind slab is the primary avalanche problem today. The greatest likelihood of unstable snow will be found in the most strongly sheltered lee areas such as the Lip and Center Bowl. In many other areas regardless of the dominant aspect, you may find smaller terrain features with new wind slabs.

Avalanche Advisory for Monday, February 29, 2016

Date: February 29, 2016
All forecast areas of Tuckerman and Huntington Ravines have Moderate avalanche danger. Natural avalanches are unlikely but human-triggered avalanches are possible. Evaluate snow and terrain carefully. AVALANCHE PROBLEM:  We are starting this morning with Low avalanche danger in both ravines.  The Moderate rating will develop as the forecasted weather moves in.  Strong west winds and 1-3″ of new snow, […]

Avalanche Advisory for Sunday, February 28, 2016

Date: February 28, 2016
Areas of wind slab will be the primary avalanche problem today. In the Sluice and Lip, these areas are sufficiently large to warrant a Moderate rating. If you are looking to trigger an avalanche today, your most likely location would be in the Lip. Other areas rated Low may also have smaller areas of wind slab in sheltered areas that are worth avoiding.

Avalanche Advisory for Saturday, February 27, 2016

Date: February 27, 2016
This advisory expires tonight at 12:00 midnight. Tuckerman Ravine has MODERATE and LOW avalanche danger. Right Gully, Sluice and the Lip have Moderate avalanche danger.  Natural avalanches are unlikely and human triggered avalanches are possible.  Heightened avalanche conditions exist on specific terrain features. Evaluate snow and terrain carefully to identify features of concern.  Other forecast […]

Avalanche Advisory for Friday, February 26, 2016

Date: February 26, 2016
AVALANCHE PROBLEM: Pockets of Wind Slab are the avalanche problem today. The rain and melt water in the snowpack from the recent weather maker is now freezing quickly as temperatures continue to plummet over the past 18 hours. This newly frozen surface will act as the bed surface for the light snow which added up to between 2.5" (6cm) and 3"(7.5cm) on the Washington summit last night. Expect pockets of new wind slab in strong lee areas such as below steep roll overs, steep water ice, rock buttresses, etc.

Avalanche Advisory for Thursday, February 25, 2016

Date: February 25, 2016
This advisory expires tonight at 12:00 midnight. All forecast areas of Tuckerman and Huntington Ravine have Considerable avalanche danger. Dangerous avalanche conditions exist. Natural avalanches are possible and human-triggered avalanches are likely. The Lobster Claw, Lower Snowfields, and Little Headwall are not posted due to an overall lack of snow in these areas.  AVALANCHE PROBLEM: Two inches (5cm) […]

Avalanche Advisory for Wednesday, February 24, 2016

Date: February 24, 2016
All forecast areas of Tuckerman Ravine will have Considerable avalanche danger. Huntington Ravine has Considerable and Moderate avalanche danger. Avalanche danger will be increasing quickly today as new precipitation changes from snow to a wintry mix and then to rain.

Avalanche Advisory for Tuesday, February 23, 2016

Date: February 23, 2016
Wind slab is the primary avalanche problem today. These slabs are varying in size, thickness and location. Many areas with a Moderate rating can be navigated with wise travel assessments. Areas rated Low will contain pockets of isolated wind slabs that could be reactive to a human trigger. All areas will contain some areas of exposed melt-freeze crust. Wise travel choices will be crucial today. Runouts to all gullies are slow to fill in and a fall on impenetrable melt-freeze crust or due to being swept by a small isolated pocket of wind slab could have disastrous results.

Avalanche Advisory for Monday, February 22, 2016

Date: February 22, 2016
Tuckerman and Huntington Ravine have MODERATE avalanche danger. Natural avalanches are unlikely but human-triggered avalanches are possible. Evaluate snow and terrain carefully.  AVALANCHE PROBLEM: Wind slab is the primary avalanche problem today. Widespread, smooth slabs reach from wall to wall in most gullies in both Ravines this morning. These slabs have a layer of lower […]

Avalanche Advisory for Sunday, February 21, 2016

Date: February 21, 2016
Wind slabs are the primary avalanche problem today. Avalanche danger will be elevated throughout most aspects of our forecast areas, with slopes facing east and north holding more danger than those facing primarily to the south (e.g. Lobster Claw or North Gully). We are starting today with dangerous avalanche conditions, and today's weather will only continue adding to the existing stability problems.

Avalanche Advisory for Saturday, February 20, 2016

Date: February 20, 2016
  Tuckerman and Huntington Ravine have CONSIDERABLE avalanche danger. Natural avalanches are possible and human-triggered avalanches are likely. Dangerous avalanche conditions exist in our forecast areas.  AVALANCHE PROBLEM: New Wind Slab is the avalanche problem today. Several inches of low density snow from 9pm to 12pm is setting us up for weak Wind Slabs today.  Recently, snow […]

Avalanche Advisory for Friday, February 19, 2016

Date: February 19, 2016
....Therefore, long sliding falls, lingering ice dams, melt-channels, and undermined ice are more of a concern than avalanches right now. However, a new avalanche problem will develop very late tonight into tomorrow. See more details below in the Weather and Snowpack discussion.

Avalanche Advisory for Thursday, February 18, 2016

Date: February 18, 2016
All forecast areas of Tuckerman and Huntington Ravines have LOW avalanche danger. Natural and human-triggered avalanches are unlikely. Watch for isolated pockets of snow in strong lee areas. AVALANCHE PROBLEM: Tuesday brought over an inch of rain to the summit during a 12 hour period with temperatures above freezing. This liquid has since drained and refrozen leaving […]

Avalanche Advisory for Wednesday, February 17, 2016

Date: February 17, 2016
This advisory expires tonight at 12:00 midnight. All forecast areas of Tuckerman and Huntington Ravines have LOW avalanche danger. Natural and human-triggered avalanches are unlikely. Watch for isolated pockets of snow in strong lee areas. AVALANCHE PROBLEM: Avalanche problem? Slick icy surfaces, long sliding falls, and ice dams are on my mind more than avalanche problems […]

Avalanche Advisory for Tuesday, February 16, 2016

Date: February 16, 2016
All forecast areas of Tuckerman and Huntington Ravines have CONSIDERABLE avalanche danger today. Natural avalanches are possible and human-triggered avalanches are likely. Cautious route-finding and conservative decision making will be essential today...Wet slabs and loose wet avalanches will be the threats today.

Avalanche Advisory for Monday, February 15, 2016

Date: February 15, 2016
....Don’t be lulled into thinking that these hard slabs won’t fracture due to being so firm. Their ability to fracture will be dependent on a complex interplay between their thickness and position in the terrain and the thickness of the weak layer of soft snow beneath and the slabs ability to span over it. Traveling one at a time, staying out of the runout....

Avalanche Advisory for Sunday, February 14, 2016

Date: February 14, 2016
Tuckerman Ravine has MODERATE and LOW avalanche danger. Sluice, Lip, Center Bowl and Chute have Moderate avalanche danger. Natural avalanches are unlikely and human-triggered avalanches are possible. Heightened avalanche conditions exist. Evaluate snow and terrain carefully and identify features of concern. Right and Left Gully and Hillman’s Highway have Low avalanche danger. Natural and human-triggered […]

Avalanche Advisory for Saturday, February 13, 2016

Date: February 13, 2016
Wind slab is the primary avalanche problem today. New wind slabs will develop as winds blow new snow falling this morning over existing wind slabs this afternoon. A fairly large avalanche from the mid-elevation start zone of Center Bowl on Thursday night left plenty of hangfire.

Avalanche Advisory for Friday, February 12, 2016

Date: February 12, 2016
Tuckerman Ravine has CONSIDERABLE and MODERATE avalanche danger.  Sluice, Lip, Center Bowl, Chute and Left Gully have Considerable avalanche danger. Natural avalanches are possible and human-triggered avalanches are likely. Careful snowpack evaluation, cautious route finding and conservative decision making are essential. Right Gully and Hillman’s Highway have Moderate avalanche danger. Natural avalanches are unlikely and human-triggered […]

Avalanche Advisory for Thursday, February 11, 2016

Date: February 11, 2016
This advisory expires tonight at 12:00 midnight. Tuckerman Ravine will have High and Considerable avalanche danger. The Sluice, Lip, Center Bowl, Chute and Left Gully will have High avalanche danger. Natural avalanches are likely and human triggered avalanches are very likely. Very dangerous avalanche conditions will exist and travel in avalanche terrain is not recommended. Right Gully […]

Avalanche Advisory for Wednesday, February 10, 2016

Date: February 10, 2016
Tuckerman Ravine has Considerable and Moderate avalanche danger...Tuckerman Ravine has Considerable and Moderate avalanche danger. The Sluice, Lip, Center Bowl, Chute, and Left Gully will have Considerable danger. Dangerous avalanche conditions exist. Natural avalanches are possible and human-triggered avalanches are likely. Right Gully and Hillman's Highway have Moderate avalanche danger. Natural avalanches are unlikely and human-triggered avalanches are possible. Lobster Claw, Lower Snowfields, and Little Headwall remain not posted due to a lack of snow in these locations.

All forecast areas of Huntington Ravine will have Considerable avalanche danger. Dangerous avalanche conditions will exist. The only exception to this is the Escape Hatch, which will have Moderate avalanche danger. Natural avalanches are unlikely and human-triggered avalanches are possible in this location. Today's avalanche problem is predominantly the growth of new, relatively soft wind slab. Most areas in both ravines are starting the day in the Moderate range, but with the addition of more snow and increasing winds in the afternoon, expect avalanche danger to exceed Moderate before the end of the day.

Avalanche Advisory for Tuesday, February 9, 2016

Date: February 9, 2016
Today there will be two primary avalanche problems competing for your attention, the establishment favorite wind slab, and the outsider candidate, loose dry avalanches. Dust on crust is an apt description of the current situation, with soft slabs expected to become a problem.

Avalanche Advisory for Monday, February 8, 2016

Date: February 8, 2016
Tuckerman Ravine has MODERATE and LOW avalanche danger.  Center Bowl and Chute have Moderate avalanche danger. Natural avalanches are unlikely and human-triggered avalanches are possible. Evaluate snow and terrain carefully to identify features of concern.  Right Gully, Sluice, Lip, Left Gully and Hillman’s Highway have Low avalanche danger. Natural and human-triggered avalanches are unlikely. Watch for […]