Turnagain Pass Archives

Date	Problem #1	Problem #2	The Bottom Line
Thu, January 7th, 2021	Storm Slabs	Deep Persistent Slabs	The avalanche danger is CONSIDERABLE above 1000′ today. New snow and strong winds have created dangerous avalanche conditions. Natural avalanches are possible and human triggered storm and wind slabs, 1-3′ deep are likely. Cautious route-finding and conservative decision-making are essential. Look for signs of instability and choose terrain wisely. Below 1000′ the avalanche danger is MODERATE. Human triggered [Read More]
Wed, January 6th, 2021	Wind Slabs		The avalanche danger will be MODERATE above 1000′ today, where it is possible a person could trigger a wind slab avalanche up to a foot deep. Active weather today will bring a few inches of heavy snow with strong winds, building sensitive wind slabs on top of weak snow. Pay attention to indicators of unstable snow [Read More]
Tue, January 5th, 2021	Wind Slabs		The avalanche danger is MODERATE today above 1000′. Triggering a wind slab in steep wind-loaded terrain remains possible. Watch for blowing snow and signs of wind effect on the snow surface. Give cornices a wide berth. The avalanche danger is LOW below 1000’. [Read More]
Mon, January 4th, 2021	Wind Slabs	Deep Persistent Slabs	Today’s avalanche danger will rise to CONSIDERABLE above 2500’ as a storm moving in this afternoon will make it likely that a person could trigger a wind slab avalanche up to a foot deep. The avalanche danger is expected to remain at MODERATE for elevations below 2500’, where lighter winds and lower snowfall totals will [Read More]
Sun, January 3rd, 2021	Deep Persistent Slabs		The avalanche danger is MODERATE today and there is a small chance of triggering an avalanche on a weak layer buried 3-5’ deep in the snowpack at elevations up to 2500’. It will also be important to be on the lookout for lingering wind slabs in steep terrain at upper elevations, and pay attention to [Read More]
Sat, January 2nd, 2021	Deep Persistent Slabs		The avalanche danger remains MODERATE on slopes over 35° above 1,000′. Today is another day to watch for lingering wind slabs in steep terrain, cornice falls along ridgelines and keep an eye on your sluff. Additionally, at elevations between 1,000′ and 2,500′ there is a small chance of triggering a large avalanche (3-5′ deep) on weak [Read More]
Fri, January 1st, 2021	Wind Slabs	Deep Persistent Slabs	The avalanche danger remains MODERATE on slopes over 35° above 1,000′. Triggering a wind slab avalanche 1-2′ thick remains possible on wind loaded steep slopes and in cross-loaded gullies. Additionally, at elevations between 1,000′ and 2,500′ there is a small chance of triggering a large avalanche (3-5′ deep) on weak snow developing near a crust. [Read More]
Thu, December 31st, 2020	Wind Slabs	Deep Persistent Slabs	The avalanche danger is MODERATE above 1,000′ today. Triggering a wind slab remains possible on slopes steeper than 35°. These slabs could be 1-2′ deep and will be found on wind-loaded slopes and in cross-loaded gullies. Additionally, between 1300′-2500′, there is a small chance of triggering a deeper avalanche (3-5′ deep) on weak snow near [Read More]
Wed, December 30th, 2020	Wind Slabs	Deep Persistent Slabs	The avalanche danger remains MODERATE at elevations above 1,000′. Triggering either a fresh wind slab from overnight or a lingering wind slab from earlier this week is possible. These slabs are around 1-2′ thick and found on wind loaded steeper slopes and in steep cross-loaded gullies. Additionally, between 1300-2500’, there is a small chance of [Read More]
Tue, December 29th, 2020	Wind Slabs	Deep Persistent Slabs	Today’s avalanche danger is MODERATE above 1000′, where it will be possible to trigger a wind slab avalanche 1-2’ deep. Between 1300-2500’, there is also a small chance of triggering a deeper avalanche on a weak layer buried 3-5’ deep, near a crust that formed in the beginning of the month. We will need to [Read More]
Mon, December 28th, 2020	Storm Slabs	Deep Persistent Slabs	The avalanche danger is CONSIDERABLE above 1000′ today. New snow and strong winds have created dangerous avalanche conditions. Natural avalanches are possible and human triggered storm and wind slabs, 1-3′ deep are likely. Between 1300′-2500′ there is also chance of triggering a deep slab avalanche breaking 3-5′ deep on a buried weak layer associated with [Read More]
Sun, December 27th, 2020	Wind Slabs		Today’s avalanche danger will rise to CONSIDERABLE above 2500’, where it will become likely a person could trigger a wind slab avalanche 1-2’ deep as winds pick up throughout the day. Watch for active wind loading near ridgetops, in gullies, and below convex rollovers. Pay attention to changing conditions and increasing avalanche danger as the [Read More]
Sat, December 26th, 2020	Wind Slabs		The avalanche danger is MODERATE at elevations above 1,000′ where triggering a lingering wind slab avalanche is possible. These slabs could be fairly stubborn, composed of hard snow and in the 6-24″ range. They are likely to be found on steeper slopes, rollovers and in cross-loaded gullies. The danger is LOW below 1,000′. SUMMIT LAKE: [Read More]
Fri, December 25th, 2020	Wind Slabs		The avalanche danger is CONSIDERABLE in the Alpine (above 2,500′) for wind slab avalanches. An increase in winds overnight should have been enough to create fresh wind slabs 1-2′ thick. These are expected to be easy to trigger on slopes over 35 degrees with new wind deposited snow. The danger is MODERATE for wind slabs [Read More]
Thu, December 24th, 2020	Wind Slabs		The avalanche danger is MODERATE above 1000′. Human triggered wind slabs 1-5′ deep are possible on slopes steeper than 30°. The snowpack still needs time to adjust to the rapid loading that occurred during the storm on Tuesday. In addition watch for changing conditions as winds bump up again today. Evaluate snow and terrain carefully. [Read More]
Wed, December 23rd, 2020	Storm Slabs		The avalanche danger is CONSIDERABLE for all elevations. Yesterday hurricane force winds, combined with feet of new snow at mid and upper elevations and inches of rain at sea level, overloaded the snowpack. Today large, dangerous, human triggered storm slab avalanches are likely on slopes over 30°. We are in the window of the first [Read More]
Tue, December 22nd, 2020	Storm Slabs		The avalanche danger is HIGH today due to heavy snowfall, rain, and strong winds. Large natural avalanches are likely, human triggered avalanches are very likely, and travel in avalanche terrain is not recommended. With heavy snowfall in the upper elevations and rain to 1700′ we expect to see a mix of dry and wet avalanches, [Read More]
Mon, December 21st, 2020	Wind Slabs		The avalanche danger is expected to rise to MODERATE today in the Alpine (above 2,500′) with light snow fall and increasing winds this afternoon. Human triggered wind slab avalanches, up to a foot thick, will be possible along ridgelines and in cross-loaded gullies. A LOW danger exists below 2,500′ and in areas without wind effect. [Read More]
Sun, December 20th, 2020	Normal Caution		The avalanche danger is LOW across all elevations in the Turnagain Pass area today. Low danger does not mean no danger– it is unlikely a person will trigger an avalanche, but not impossible. Be on the lookout for lingering wind slabs in isolated locations, sluffs on steep slopes, and give cornices plenty of space. Be [Read More]
Sat, December 19th, 2020	Wind Slabs		A MODERATE avalanche danger is expected today in the Alpine (above 2,500′) as 4-6″ of snow with a bump in wind is forecast. Fresh wind slab avalanches, up to a foot thick, should be forming along ridgelines and in cross-loaded gullies. Watch for changing conditions as these wind slabs, although on the smaller side, should [Read More]
Fri, December 18th, 2020	Deep Persistent Slabs		The avalanche danger remains MODERATE in the Alpine, above 2,500′. Watch for shallow new wind slabs that may have formed in yesterday’s slight bump in ridgetop winds. Additionally, on steep slopes with an overall thin snow cover, or a thin spot in the snowpack, there is still a chance a person could trigger a large [Read More]
Thu, December 17th, 2020	Deep Persistent Slabs		The avalanche danger is MODERATE on slopes over 35 degrees above 2,500′. In steep rocky terrain, there is still a chance a person could hit a thin spot in the snowpack and trigger a large avalanche, 4-6′ deep or deeper, failing in weak snow at the ground. The avalanche danger is LOW at elevations below 2500’. PLACER [Read More]
Wed, December 16th, 2020	Deep Persistent Slabs		Today’s avalanche danger is MODERATE at elevations above 2500’. Although unlikely, there is still a chance a person could trigger a large avalanche 6’ deep or deeper failing in weak snow at the ground. Be careful with your terrain choices, and avoid thin, rocky areas where it will be most likely to trigger an avalanche. [Read More]
Tue, December 15th, 2020	Wind Slabs	Deep Persistent Slabs	Today’s avalanche danger is MODERATE above 2500’, where it will be possible to trigger a wind slab avalanche 1-2’ deep on recently wind loaded slopes. Be careful with your snowpack assessment before approaching bigger terrain today, and avoid steep slopes with fresh slabs of wind-loaded snow. The avalanche danger is LOW at elevations below 2500’. [Read More]
Mon, December 14th, 2020	Wind Slabs	Deep Persistent Slabs	Today the avalanche danger is MODERATE above 1000′. Human triggered wind slab avalanches, 1-2’ deep are possible on steep, leeward slopes and in cross-loaded gullies. Be on the lookout for active wind transport, shooting cracks and stiff hollow sounding snow. As always, give cornices a wide berth. The avalanche danger remains LOW below 1000′. SUMMIT [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