Turnagain Pass Archives

Date	Problem #1	Problem #2	The Bottom Line
Fri, February 14th, 2020	Persistent Slabs	Wind Slabs	The avalanche danger remains CONSIDERABLE above 1,000′. Triggering a large and deadly slab avalanche 2-4′ thick remains possible along with triggering smaller avalanches such as wind slabs 1-2′ thick and cornice falls. Due to the size and destructive nature of triggering a large slab, we need to be on guard, be conservative and consider the [Read More]
Thu, February 13th, 2020	Persistent Slabs	Wind Slabs	The avalanche danger is CONSIDERABLE above 1,000′. Triggering a large and dangerous slab avalanche, 2-4′ thick that fails in buried weak snow, remains a primary concern and extra caution is advised for mountain travel. Wind slabs, storm slabs, sluffs and cornice falls, all associated with yesterday’s 10-18″ of new snow, will also be possible to [Read More]
Wed, February 12th, 2020	Storm Slabs	Persistent Slabs	The avalanche danger is CONSIDERABLE at all elevations. With new snow, rising temperatures and strong winds overnight, triggering a storm slab is likely and natural avalanches are possible. In addition, triggering a large and dangerous slab avalanche 2-4′ thick on buried weak layers is possible and these avalanches may be triggered remotely. Conservative travel and decision-making [Read More]
Tue, February 11th, 2020	Persistent Slabs	Wind Slabs	The avalanche danger is CONSIDERABLE above 1000′. Triggering a large and dangerous slab avalanche 2-4′ thick on buried weak layers is possible and these avalanches may be triggered remotely. Wind from yesterday likely added to the formation of wind slabs on the leeward terrain throughout Alpine and Treeline elevations. A conservative mindset is called for [Read More]
Mon, February 10th, 2020	Persistent Slabs	Wind Slabs	The avalanche danger is MODERATE at all elevations and may rise to CONSIDERABLE in the Alpine this afternoon with increasing outflow winds. Triggering a large and dangerous slab avalanche 2-3′ thick on buried weak layers is possible and these avalanches may be triggered remotely. Watch for blowing snow and wind slabs forming in steep leeward [Read More]
Sun, February 9th, 2020	Persistent Slabs	Wind Slabs	The avalanche danger is CONSIDERABLE above 1,000′. Triggering a large and dangerous slab avalanche 2-3′ thick remains likely and could be triggered remotely. Additionally, it’s still possible for a person to trigger a wind slab near ridges and gullies. Cautious route-finding and conservative decision making are essential today. [Read More]
Sat, February 8th, 2020	Wind Slabs	Persistent Slabs	The avalanche danger is CONSIDERABLE at all elevations today due to strong wind, a few inches of new snow and warming temperatures. Not only will fresh wind slab avalanches be likely for a person to trigger, but much larger and dangerous slab avalanches are lurking. These larger slabs are releasing in weak faceted snow 2-3′ [Read More]
Fri, February 7th, 2020	Persistent Slabs		The avalanche danger remains CONSIDERABLE above 1,000′. Triggering a large and dangerous slab avalanche 2-3′ thick remains likely and these avalanche could be triggered remotely. Natural avalanches are possible. Continued cautious route-finding and conservative decision making are essential today. Pay attention to changing conditions as the next storm moves into the area. Below 1000′: Watch for [Read More]
Thu, February 6th, 2020	Persistent Slabs		The avalanche danger remains CONSIDERABLE above 1,000′. Triggering a large and dangerous slab avalanche 2-3′ thick remains likely and continued cautious route-finding and conservative decision making is essential. These slabs are sitting on weak faceted snow and could be triggered from below, the side or along the ridge. They can be triggered on wind loaded [Read More]
Wed, February 5th, 2020	Wind Slabs	Persistent Slabs	The avalanche danger is CONSIDERABLE above 1,000′. Human triggered wind slab avalanches are likely on steep slopes with previous or active wind loading. If triggered, these wind slabs have the potential to overload buried weak layers and initiate a larger slab avalanche. Where wind slabs are not present, it’s possible for a person to trigger [Read More]
Tue, February 4th, 2020	Wind Slabs	Persistent Slabs	Today the avalanche danger is CONSIDERABLE above 1,000′. Human triggered wind slab avalanches are likely on steep slopes with previous or active wind loading. If triggered, these wind slabs have the potential to overload buried weak layers and initiate a larger slab avalanche. Where wind slabs are not present, the persistent weak layers 2-3′ down [Read More]
Mon, February 3rd, 2020	Wind Slabs	Persistent Slabs	The avalanche danger is CONSIDERABLE above 1000′. The continued wind loading today and weak snow buried in the snowpack are making for tricky avalanche conditions. Human triggered wind slabs are likely in steep leeward terrain and naturals are possible. In addition, triggering a large dangerous avalanche that breaks deeper in the snowpack is also possible. [Read More]
Sun, February 2nd, 2020	Wind Slabs	Persistent Slabs	The avalanche danger is CONSIDERABLE today above 1,000′. Naturally occurring wind slab avalanches are possible and human triggered wind slabs are likely on steep slopes with previous or active wind loading. If triggered, these wind slabs have the potential to overload buried weak layers and initiate a larger slab avalanche. In areas out of the [Read More]
Sat, February 1st, 2020	Wind Slabs	Persistent Slabs	The avalanche danger is expected to rise to CONSIDERABLE today above 1,000′ due to strong northwesterly winds forecast to impact the region. Naturally occurring wind slab avalanches are possible and human triggered wind slabs are likely on steep slopes with active wind loading. Wind slabs also have the potential to overload buried weak layers and [Read More]
Fri, January 31st, 2020	Persistent Slabs	Wind Slabs	The avalanche danger is CONSIDERABLE in the Alpine and MODERATE below. A very cautious mindset is required for travel in exposed areas above the trees today as large and dangerous slab avalanches may still be likely to trigger on steep slopes. These slabs are 2-4+feet thick and sitting on weak faceted snow. Lingering wind slabs, [Read More]
Thu, January 30th, 2020	Storm Slabs		The avalanche danger is CONSIDERABLE at all elevations. Human triggered storm slab and loose snow avalanches remain likely today in steep terrain. Buried weak layers are now 2-3′ deep and avalanches have the potential to be large and dangerous. Careful route finding is essential. SEWARD: This region also received new snow with wind. Caution is advised. [Read More]
Wed, January 29th, 2020	Storm Slabs		The avalanche danger is CONSIDERABLE. Human triggered storm slab avalanches 2-3′ deep are likely and natural avalanches are possible. The avalanche danger may rise to HIGH late this afternoon as winds increase and snowfall continues. Caution is advised today, carefully select terrain and be aware of the consequences. Avalanches may be large and dangerous. The National [Read More]
Tue, January 28th, 2020	Wind Slabs	Storm Slabs	Today the avalanche danger is CONSIDERABLE in the Alpine and MODERATE below. Recent wind and 8-14″ of new snow have created the conditions to make it likely for a human to trigger a wind slab up to 2′ thick. Storm snow could be forming slab character and easier to trigger in steeper terrain. Cornices are [Read More]
Mon, January 27th, 2020	Dry Loose		Today the avalanche danger is LOW at all elevations. Pay attention to changing conditions with incoming weather. There is potential for small wind slabs in the Alpine if winds increase today. Triggering loose snow avalanches (sluffs) remains possible in steep terrain. PORTAGE VALLEY, SUMMIT LAKE, LOST LAKE: Areas east and south of Turnagain Pass saw an [Read More]
Sun, January 26th, 2020	Dry Loose		Today the avalanche danger is LOW at all elevations. LOW danger does not mean NO danger. Loose snow avalanches (sluffs) remain possible to trigger, especially in steeper terrain. On steep sustained slopes, dry snow avalanches could entrain a significant amount of surface snow and run to valley bottoms. Normal caution is advised for other concerns [Read More]
Sat, January 25th, 2020	Dry Loose		A generally LOW avalanche danger exists in the Turnagain Pass region. Remember, LOW danger does not mean NO danger. Loose snow avalanches (sluffs) remain possible to trigger. These could entrain a significant amount of surface snow and run to valley bottoms on steep sustained slopes. Additionally, small wind slabs could be found in steep rocky [Read More]
Fri, January 24th, 2020	Wind Slabs	Dry Loose	The avalanche danger is MODERATE for slopes in the Alpine that are being affected by the northwest winds over the region. Watch for wind drifted and loaded slopes where triggering a wind slab up to a foot thick will be possible. Slopes that have not seen wind effect have a generally LOW avalanche danger and [Read More]
Thu, January 23rd, 2020	Wind Slabs	Dry Loose	Today the avalanche danger is MODERATE in the Alpine. An increase in winds are forecast and triggering a fresh wind slab avalanche, composed of the loose snow from the storm on 1/20, is possible. Where wind has not had an affect, and below 2500′, the danger is LOW where concerns for human triggered loose sluff [Read More]
Wed, January 22nd, 2020	Persistent Slabs	Dry Loose	The avalanche danger remains MODERATE above 1,000′. Triggering a shallow soft slab avalanche is possible where Monday’s snow is more cohesive due to past wind and/or warmer temperatures. Loose snow sluffs are expected to be easy to trigger on steep slopes. These could entrain a significant amount of snow and create a larger avalanche than [Read More]
Tue, January 21st, 2020	Storm Slabs	Persistent Slabs	Today the avalanche danger is MODERATE at all elevations. With 10″ inches of low density snow in the past 36 hours it’s possible for a human to trigger fast moving loose snow sluffs, which could easily entrain the older loose snow within the snowpack. Soft slab avalanches composed of the new snow may also be [Read More]

Below are archived forecasts for the past 5 seasons with the highest danger rating and Avalanche Problem 1 displayed in the chart. Click on a table cell to read the forecast for that day. Alternatively you can view this page for 10 seasons of data plus embedded observations from that day.

Date	25/26	24/25	23/24	22/23	21/22
11/25	No Rating	No Rating	Wet Loose	Wind Slabs	Storm Slabs
11/26	No Rating	No Rating	Wet Loose	Wind Slabs	Persistent Slabs
11/27	No Rating	No Rating	Wind Slabs	Wind Slabs	Persistent Slabs
11/28	No Rating	No Rating	Wind Slabs	Wind Slabs	Persistent Slabs
11/29	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
11/30	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
12/01	No Rating	No Rating	Storm Slabs	Wind Slabs	Persistent Slabs
12/02	No Rating	No Rating	Wind Slabs	Wind Slabs	Persistent Slabs
12/03	No Rating	No Rating	Wind Slabs	Persistent Slabs	Persistent Slabs
12/04	No Rating	No Rating	Wind Slabs	Normal Caution	Persistent Slabs
12/05	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/06	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/07	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/08	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/09	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/10	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
12/11	No Rating	No Rating	Storm Slabs	Storm Slabs	Wind Slabs
12/12	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
12/13	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/14	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/15	No Rating	No Rating	Wind Slabs	Wind Slabs	Deep Persistent Slabs
12/16	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/17	No Rating	No Rating	Storm Slabs	Persistent Slabs	Deep Persistent Slabs
12/18	No Rating	No Rating	Persistent Slabs	Persistent Slabs	Deep Persistent Slabs
12/19	No Rating	No Rating	Wind Slabs	Persistent Slabs	Deep Persistent Slabs
12/20	No Rating	No Rating	Storm Slabs	Persistent Slabs	Deep Persistent Slabs
12/21	No Rating	No Rating	Dry Loose	Wind Slabs	Wind Slabs
12/22	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
12/23	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
12/24	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
12/25	No Rating	No Rating	Storm Slabs	Wind Slabs	Wind Slabs
12/26	No Rating	No Rating	Storm Slabs	Storm Slabs	Deep Persistent Slabs
12/27	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
12/28	No Rating	No Rating	Wind Slabs	Storm Slabs	Deep Persistent Slabs
12/29	No Rating	No Rating	Wind Slabs	Wind Slabs	Deep Persistent Slabs
12/30	No Rating	No Rating	Glide Avalanches	Wind Slabs	Normal Caution
12/31	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
01/01	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
01/02	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
01/03	No Rating	No Rating	Storm Slabs	Storm Slabs	Wind Slabs
01/04	No Rating	No Rating	Storm Slabs	Storm Slabs	Wind Slabs
01/05	No Rating	No Rating	Storm Slabs	Wind Slabs	Normal Caution
01/06	No Rating	No Rating	Storm Slabs	Persistent Slabs	Normal Caution
01/07	No Rating	No Rating	Storm Slabs	Persistent Slabs	Normal Caution
01/08	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
01/09	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
01/10	No Rating	No Rating	Persistent Slabs	Wind Slabs	Storm Slabs
01/11	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
01/12	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Wind Slabs
01/13	No Rating	No Rating	Glide Avalanches	Deep Persistent Slabs	Storm Slabs
01/14	No Rating	No Rating	Glide Avalanches	Deep Persistent Slabs	Wind Slabs
01/15	No Rating	No Rating	Glide Avalanches	Wind Slabs	Wind Slabs
01/16	No Rating	No Rating	Glide Avalanches	Wind Slabs	Persistent Slabs
01/17	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
01/18	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/19	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/20	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/21	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/22	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/23	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/24	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Storm Slabs
01/25	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Storm Slabs
01/26	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/27	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Storm Slabs
01/28	No Rating	No Rating	Glide Avalanches	Persistent Slabs	Wind Slabs
01/29	No Rating	No Rating	Storm Slabs	Persistent Slabs	Wind Slabs
01/30	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
01/31	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/01	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/02	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/03	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/04	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/05	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
02/06	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
02/07	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
02/08	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
02/09	No Rating	No Rating	Persistent Slabs	Wind Slabs	Wind Slabs
02/10	No Rating	No Rating	Persistent Slabs	Wind Slabs	Wind Slabs
02/11	No Rating	No Rating	Persistent Slabs	Wind Slabs	Wind Slabs
02/12	No Rating	No Rating	Wind Slabs	Persistent Slabs	Wind Slabs
02/13	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/14	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/15	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/16	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
02/17	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/18	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/19	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/20	No Rating	No Rating	Wet Slab	Wind Slabs	Persistent Slabs
02/21	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/22	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
02/23	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/24	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
02/25	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
02/26	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/27	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
02/28	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
03/01	No Rating	No Rating	Wind Slabs	Storm Slabs	Normal Caution
03/02	No Rating	No Rating	Wind Slabs	Wind Slabs	Wind Slabs
03/03	No Rating	No Rating	Normal Caution	Wind Slabs	Storm Slabs
03/04	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
03/05	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
03/06	No Rating	No Rating	Storm Slabs	Wet Loose	Storm Slabs
03/07	No Rating	No Rating	Storm Slabs	Wet Loose	Storm Slabs
03/08	No Rating	No Rating	Storm Slabs	Wet Loose	Storm Slabs
03/09	No Rating	No Rating	Persistent Slabs	Wind Slabs	Wind Slabs
03/10	No Rating	No Rating	Wind Slabs	Normal Caution	Wind Slabs
03/11	No Rating	No Rating	Wind Slabs	Normal Caution	Wind Slabs
03/12	No Rating	No Rating	Storm Slabs	Normal Caution	Wind Slabs
03/13	No Rating	No Rating	Storm Slabs	Normal Caution	Persistent Slabs
03/14	No Rating	No Rating	Storm Slabs	Normal Caution	Wind Slabs
03/15	No Rating	No Rating	Storm Slabs	Wind Slabs	Persistent Slabs
03/16	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
03/17	No Rating	No Rating	Wind Slabs	Storm Slabs	Storm Slabs
03/18	No Rating	No Rating	Persistent Slabs	Storm Slabs	Wind Slabs
03/19	No Rating	No Rating	Wet Loose	Storm Slabs	Storm Slabs
03/20	No Rating	No Rating	Wet Loose	Storm Slabs	Wind Slabs
03/21	No Rating	No Rating	Wet Loose	Wind Slabs	Persistent Slabs
03/22	No Rating	No Rating	Wind Slabs	Storm Slabs	Persistent Slabs
03/23	No Rating	No Rating	Wind Slabs	Storm Slabs	Storm Slabs
03/24	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
03/25	No Rating	No Rating	Wind Slabs	Wind Slabs	Storm Slabs
03/26	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Storm Slabs
03/27	No Rating	No Rating	Wet Loose	Deep Persistent Slabs	Wind Slabs
03/28	No Rating	No Rating	Wet Loose	Deep Persistent Slabs	Storm Slabs
03/29	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Persistent Slabs
03/30	No Rating	No Rating	Storm Slabs	Deep Persistent Slabs	Deep Persistent Slabs
03/31	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Wind Slabs
04/01	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Wind Slabs
04/02	No Rating	No Rating	Storm Slabs	Deep Persistent Slabs	Storm Slabs
04/03	No Rating	No Rating	Storm Slabs	Wind Slabs	Persistent Slabs
04/04	No Rating	No Rating	Wind Slabs	Wind Slabs	Persistent Slabs
04/05	No Rating	No Rating	Wind Slabs	Wet Loose	Wind Slabs
04/06	No Rating	No Rating	Wind Slabs	Wet Loose	Wind Slabs
04/07	No Rating	No Rating	Wind Slabs	Deep Persistent Slabs	Wind Slabs
04/08	No Rating	No Rating	Wet Loose	Deep Persistent Slabs	Wind Slabs
04/09	No Rating	No Rating	Wind Slabs	Storm Slabs	Wind Slabs
04/10	No Rating	No Rating	Storm Slabs	Storm Slabs	Normal Caution
04/11	No Rating	No Rating	Storm Slabs	Storm Slabs	Normal Caution
04/12	No Rating	No Rating	Storm Slabs	Storm Slabs	Normal Caution
04/13	No Rating	No Rating	Persistent Slabs	Storm Slabs	Normal Caution
04/14	No Rating	No Rating	Persistent Slabs	Wind Slabs	Normal Caution
04/15	No Rating	No Rating	No Rating	Wet Loose	Wind Slabs
04/16	No Rating	No Rating	Wind Slabs	Wet Loose	Wind Slabs
04/17	No Rating	No Rating	No Rating	No Rating	Normal Caution
04/18	No Rating	No Rating	Wind Slabs	Wet Loose	No Rating
04/19	No Rating	No Rating	No Rating	No Rating	Normal Caution
04/20	No Rating	No Rating	Wet Loose	Deep Persistent Slabs	No Rating