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T. Denison/NPS May 21, 2024 The snow is very wet heavy and forms a breakable crust after cold nights; it is not yet a summer snowpack. There is widespread glide avalanche activity and hazard, as well as active ice/snow/rockfall when steep slopes and cliff ledges receive sun. It's going to take a spell of warm weather and sunshine for the mountains to shed snow and these hazards to dissipate. West Ridge Forbidden: Climbers report that the entire route is still covered in snow and rime-ice. The early-season approach couloir is a feasible route but has avalanched in its lower portion. A large (D3) avalanche deposit can be observed crossing a large swath of the approach, having slid from a face below Forbidden's East Ridge. 
T. Denison/NPS Boston Basin is like a landscape painting filled with beautiful fall colors and fat, happy marmots. Bears have been seen often in the area near the camps but have not approached people – remember to bring require bear-proof food storage. Water is still plentiful at both camps and on the approach to Forbidden. There is still an active bee nest on the trail just below the first major creek crossing. West Ridge Forbidden: It is currently (unprecedentedly?) possible to climb the W Ridge without touching snow or ice. Climbers are encouraged to get an early start with the shorter fall days, and to keep in mind that it is a very popular climb and congestion can slow traffic; parties are often seen descending in the dark, which is not recommended. It is possible to descend by rappelling and walking down ledges entirely on the skier’s right side of Cat Scratch Gully and not enter the gully on descent. As always, be cautious of rockfall between multiple parties in Cat Scratch. Remember that rodents live on the ridge – leaving food unattended while climbing creates a bad situation for everyone. Sahale: Parties are still climbing the Quien Sabe route using several thick snowbridges over large crevasses. The upper glacier requires travelling on a steep slope above a crevasse where a fall would be very consequential. 
T. Denison/NPS Bears still roam the Basin but have not been reported near the bivy areas. There are, however, bees present on the trail which have been aggressive and stung several parties. The nest is in a rotting log located just before (downhill of) the first major stream crossing at Midas Creek. There are small notes uptrail and downtrail marking the nest and directing people to hike around uphill (easy). Sharkfin Tower: There is no substantial moat to access the approach gully, nor any snow travel at all after leaving the glacier The gully itself is very loose with water actively running through it - parties should be careful of causing rockfall while ascending and rappelling down next to the gully. The SE Ridge route is in fine shape otherwise, with rappel anchors offering several rappel route options: from the summit directly or from the top of the second pitch. Sahale via Quien Sabe: The glacier is very bare with exposed crevasses throughout hindering almost all travel. It is still possible, however, to hug the far climber's left side passing beneath Sharkfin Tower to the upper glacier and saddle of Boston and Sahale - this requires some zig-zagging and crossing two narrow but thick snow bridges across very large crevasses. Boston Peak is actively shedding rockfall just above this path. Climbers on the steepest section of the upper glacier will be directly above the largest crevasse where an unarrested fall would be catastrophic. This area is still snow-covered with no exposed ice, but snow is slushy late in the day. There is no substantial moat to get into the Boston-Sahale col, and no further snow travel required to summit Sahale. 
NPS/D. Visnick East Ridge Forbidden: NOCA Climbing Ranger's ventured to one of Forbidden Peaks' less frequented ridges today. Conditions were quite good as the approach from the upper bivy's was dry all the way to the ridge. The approach gully consists of quite a bit of loose rock and scree, so be mindful of parties above and below when navigating this terrain. There is a good water source from glacier runoff as you enter the gully just above the upper bivy sites. The ridge itself consisted of exposed knife ridge traversing and steep pitches up several gendarmes along the way. The rock is mostly solid, but there are several loose blocks so be sure to test holds before commiting. Some lichen covered rock can pose a challenge when trying to find good friction. Rangers opted out of the East Ledges descent and descended the West Ridge to Cat Stratch Gully. Nothing new to report here, just please make sure to be careful with rope management and loose rock on the West Ridge and the Cat Scratch Gully while descending. The snow at the base of Cat Scatch Gully is melting fast, but there currently remains a ~150' patch of steep blue ice/snow from the base of the last rappel to the dry rock slabs below. Consider this terrain when planning what equipment to bring as a slip here could lead to serious injury. Several Bears were seen around Boston Basin upper and lower bivy's so please be responsible with food storage 
There are bears around, and for the most part they seem to be happy eating berries and keeping to themselves. Please remember to store food properly at all times and keep a clean camp, as we don’t want these bears to get even the smallest food reward. The bears in Boston Basin seem to be used to climbers moving between the camps and on the normal approaches, but remember that they are wild animals and we must give them space if they are on or near the routes we frequent. Forbidden: There is only a couple hundred feet of snow below the Cat Scratch Gullies, but this does not mean you should leave the sharps at home. The snow that remains is very firm, and feels more like ice at most times of the day. We strongly recommend steel crampons and ice axes for parties going up any of the routes on Forbidden. Sahale: The Quien Sabe Glacier has a lot of exposed ice at this time. Teams are still able to navigate around crevasses, but the amount of ice warrants the use of steel crampons, an ice axe, and potentially some ice screws in addition to pickets to protect the route. 
NPS/J.Shields Forbidden - North Ridge Shark Fin Col ascent is completely snow free, including the alternative gully to climber’s right. The descent can be rappelled with a single 60m rope with some down climbing or using an intermediate pin anchor on skier’s left. There is currently a large, detached hanging snow mushroom in the gully. Traversing to the Boston Forbidden Col on the Boston Glacier requires some navigation and end running. Rangers traversed the Boston Glacier to the Boston/Forbidden Col and gained the North Ridge down low. Moats are getting larger and will soon pose a challenge to transition from the glacier to rock. There are enough bivy sites on this col for roughly 4 people, and no water sources nearby. Further south on the ridge, there are additional bivy sites with water sources at ~8000' on the ridge. The North Ridge route is completely snow free for climbing. There are 2 areas on the route that allow for easy snow access for water. The NW Face snow climb variation requires multiple transitions as it is no longer a fully connected snow slope. Route appears to mainly be an ice climb now and picket placement may be difficult. (ice screws recommended for protection). Forbidden – West Ridge Approach is snow-free until a couple hundred feet of steeper ice/snow at the base of cat scratch gully. Ice axes and crampons are recommended for this section as a fall can be consequential. Rangers observed a significant human triggered rock fall event down the south face from a rappel on the West Ridge. Be super mindful when pulling ropes and be sure to test the rock. Bears & rodents were observed lingering around both the upper and lower bivy sites in Boston Basin, be diligent about food storage. 
T. Denison/NPS June 28, 2023Boston BasinBasin's lookin' great! The Boston creek crossing has chilled out and can be forded safely with slightly wet feet or one can maintain dry feet with some rock hopping. The Lower Bivy sites are snow free and dry, and the toilet is in good shape. There are three snow-free sites (for 2 or 3-person tents) at the Upper Bivy area that are currently flooded but should dry within a week or so; the upper toilet is also melted out and usable. Forbidden: Both the West Ridge and the East Ridge climbing routes are snow free and climbing well once you are on route. For the W Ridge the Cat Scratch Gully is probably the way to go. The snow couloir has several discontinuities and open moats on the sides. As always, watch out for loose rock and be aware of other parties in Cat Scratch. Sahale: The Quien Sabe Glacier is in good shape with of snow still covering most of the crevasses. The bergschrund has opened about halfway across the upper slope. Early morning with an overnight freeze will provide the best snow for travel, and as it warms up be aware of punchy snow and the possibility of falling through weak snow bridges. There are still multiple route options to get to the Boston-Sahale Col. Sharkfin: Snow still exists in Sharkfin gully with a high potential of rock-fall as the gully warms up throughout the day. The rocks in this approach gulley are wet and make for difficult and insecure climbing. The moat at the entrance of the gully poses as a challenge for climbers, and will continue to change as warm temperatures persist. The route itself on Sharkfin is completely snow free. 
NPS/J.Shields Boston Basin Conditions in Boston Basin are transitioning from summer to fall, with foliage changing color, cool morning temperatures, and shorter days. There is little snow left below the Cat Scratch Gulley, or below the Quien Sabe Glacier, so expect longer rock slab approaches. The slabs below the Cat Scratch Gulley is threatened by serac chunks sliding and falling from the bottom of the remnant glacier that lies beneath the South Face of Forbidden. We urge people to watch weather forecasts closely, and remember that bears are fattening up for the upcoming winter, consuming all the calories they can find. Make sure to properly store your food - do not leave food or smellable items unattended. And make noise on the trail as bears are distracted and might not notice you approaching. 
8/18/22 Boston Basin A few different bears are regulars in the Basin, often seen enjoying the berries and generally avoiding people. We remind and urge people to keep clean camps, store all food and scented items properly, and make noise while traveling to avoid habituation or incidents with bears or other wildlife. Some teams have also seen goats in the bivy sites, but they seem to come in and out of the area and there have not been issues at this time 
NPS/J.Shields Boston Basin: Even with the current closure on Cascade River Road, the basin is busy. Most parties are camping at the higher bivy site and going for the West Ridge of Forbidden. Several upper bivy sites are now snow-free and both the upper & lower bivy toilets are useable. Please do not put any food or trash into the toilets as this negatively affects the composting process. On the approach, several parties found the crossing of Boston Creek difficult as temperatures increase, especially in the afternoon. Optional crossings can be found higher up the creek. Forbidden: Cat Scratch Gully is now the preferred approach for this climb, however there is still some snow travel left at the base that some parties found challenging. As a reminder, Cat Scratch Gully has a lot of loose rock and rock-fall potential is high with multiple parties travelling through it. We strongly recommend parties to rope up this section. The West Ridge itself is completely snow free. 
NPS/J.Shields Sharkfin: Snow still exists in Sharkfin gully with a high potential of rock-fall as the gully warms up throughout the day. A large moat at the entrance of the gully still poses as a challenge for climbers. The route itself on Sharkfin is completely snow free. 
NPS/T. Denison The switch got flipped to "summertime" and Boston Basin is in rapid transition. The initial crossing of Boston Creek when entering the basin can be done without getting wet with some rock-hopping. The toilets at both bivy areas are melted out and usable. The lower bivies have many snow-free sites while the upper area has only one site with room for a 2-person tent. A large billy goat has been hanging around the lower area - try to pee away from campsites so as not to lure it into camp. The approach to W Ridge of Forbidden is presenting mid-season challenges. The snow couloir is fully transected by a crack requiring lowering in and climbing out on reported 5.8 movement to regain the snow above - most parties are now opting for Catscratch Gully. There is still a snowfield present where the Gully and Couloir join eachother, which some parties are protecting with pickets on ascent and rappeling on descent - it's worth bringing boots and ice axes up to the W Ridge notch for this snowfield. The Quien Sabe route up Sahale is in fine shape, with the bergschrund easily bypassed on the right side. 
NPS/ K.Vollinger Boston Basin: Snow started just before tree-line on the climbers' trail. The main creek crossing to the lower bivy has melted out, expect to get your feet wet. There is a snow crossing further up but it will not last much longer. Listen for rushing water under the snow before walking across it and give holes in the snow above rushing water a wide berth. There are camp spots on rock melting out at the lower bivy. The toilet at the lower bivy is melted out and open. The upper bivy is under snow currently and the toilet is still completely buried. Sharkfin: The morning rangers went to climb sharkfin the couloir to access it had looked like solid snow from a distance . The bottom turned out to be mostly unsupported blocks that later collapsed that day when they baked in the sun. This makes the access via the couloir more hazardous and potentially not feasible until the larger blocks meltout. The rangers climbed a low angle crack system with an established rap line instead about 50 ft left of the couloir. The most difficult part was stepping across the moat starting to form at the bottom. Movement was probably about 5.5-5.6. The actual route of sharkfin was mostly clear of snow but for a couple of patches on the ledges on the north side on the last pitch. One can avoid pulling out their ice gear or cutting steps, but it wont be the easier ledge walking you usually expect this time of year. 
NPS/K.Vollinger Forbidden: The access couloir to the west ridge is becoming more difficult with a bergschrund forming above the central rock outcropping at the bottom. Some reported getting on the rock to navigate around it. Conditions are changing rapidly however and expect this moat to rapidly grow. The cat scratch gulley is not melted out and sounds like it might be an exposed snow fin to get to the top of and folks are rapping the couloir late in the day. New anchors and old anchors are being used and not all are reliable in this very dynamic environment. There are only a few patches of snow left on the West ridge and you can easily climb around them so it is reasonable to leave your snow gear at the notch. Sahale: The Quien sabe glacier is looking like it is in excellent condition, though you can see troughs forming and opening where the highway of tracks went. Just because someone crossed a bridge before you does not mean it is good for you to cross now. There is exposed rock on the shoulder and at the summit. So you may need rock gear and to rappel what you climbed up. 
NPS/J.Shields Boston Basin For those looking to go to Boston Basin, plan for extra time to get to the trailhead as the gate is closed at the Eldorado Climbers Trailhead. This adds just over 2 miles of road walking to access the climber's route. Roadwork and repairs are underway, but there is no estimate of when the road will open past Eldorado at this point. The climbers route to Boston Basin is snow-free until about 4300’, where more continuous snow fully obscures the trail. Off trail navigation skills are necessary for getting to the camps. Below treeline there is still 2-3 feet of snow, while above treeline there is much more snow remaining. 
NPS/J.Shields June 5, 2022 Keep in mind that “above average snowpack” can be misleading if just looking at a percentage. Thunder basin snotel site, for example, is well above average for this date (currently 1500%), and the site currently has 20” of snow on the ground. Easy Pass is also above average at 130% snowpack but is recording 130” or over 10 feet. This amount of snow may sound great to some people and not as great to others. For skiers and riders, it is great to be able to utilize the flotation provided by backcountry gear. For climbers, it might mean more challenging approaches, snow on route, and lots of post-holing. Consider bringing snowshoes depending on the objective. For overnight visitors it might mean melting snow for water if the creeks are still far below the surface of the snow. One thing that backcountry rangers have noticed in recent weeks is that the snow is wet and heavy and not freezing overnight. This seems to be true at fairly high elevations, and for different areas including Rainy Pass, Cascade Pass, and Hannegan Pass. The slushy conditions have made for slow travel, at times adding about 25-50% extra time if not more. This has been true for skiers and riders, and especially true for climbers without any flotation. Along with snow considerations, the amount of snowmelt and rain have increased the flows in the rivers, and this could continue for weeks to come as the weather warms up. Even small creeks might not be crossable at some flows, and the timeline for high flows might look different this year than in years prior. It is important to look into current conditions and plan your trip based on what you might encounter this year rather than assuming that it will be similar to what you saw last year at the same time. This includes many considerations, from travel times if the road is still impassable due to snow, to travel speed on snow versus on a trail, and whether or not a creek will be crossable. It might also include planning for a colder environment if you will be camping on snow, requiring more warm layers and more fuel if you are melting snow for water. Remember, plan accordingly in order to have a fun and safe trip. 
K. Beckwith Check out the links below for climbing condition blog posts from previous years: Climbing Conditions - Boston Basin Area 2021Climbing Conditions - Boston Basin Area 2020 |
Last updated: April 30, 2025