Just what does it take to close Arapahoe Basin Ski Area?<\/p>\n
That\u2019s the question many Summit County locals, transient visitors and online commenters had this time last week after the ski area near the Continental Divide remained closed for two consecutive days.<\/p>\n
A-Basin closing early? Though that\u2019s also rare, it\u2019s happened before due to rare instances of dangerous avalanche conditions along Highway 9. But to be closed for more than 48 hours? It was truly unprecedented.<\/p>\n
\u201cSnow is a good thing\u201d said Ryan Evanczky, A-Basin\u2019s snow safety director. \u201cHowever, you can get into situations where too much snow influences your ability to open. And I think it\u2019s inherent as to our location on the Contintenal Divide here that we could run into these scenarios. But, again, it\u2019s still really rare.\u201d<\/p>\n
\u201cReally rare\u201d \u2014 as in last week was only the second time in Evanczky\u2019s near two-decade tenure at A-Basin he can remember \u201cThe Widowmaker\u201d path 1 mile west and down the road from the ski area covering the highway with avalanche debris. The Widowmaker is an extremely dangerous south-facing gully that also covered Highway 9 with avalanche debris once prior to Evanczky\u2019s recollection: in February 2014.<\/p>\n
The Widowmaker and a path that descends directly across the highway from A-Basin, the Little Professor, were the two primary culprits behind the ski area\u2019s two-day closure.<\/p>\n
Three days before the closure though, on Monday, March 4, when Evanczky saw the first data point of measurement that suggested to him it could be a week of high avalanche danger. Just about two inches of water had descended on the ski area over the weekend, an alarmingly high amount of moisture within the snowfall for just a few days.<\/p>\n
\u201cThat\u2019s where we have to start to look at what kind of a load we are dealing with on our snowpack,\u201d he said. \u201cAnd there is a totally different snowpack in terms of what we are dealing with in the ski area and what\u2019s out in the backcountry or out along the highways.\u201d<\/p>\n
Fully alert to the potential dangers that lurked in the ski area\u2019s boundaries and directly out of bounds, Evanczky and A-Basin\u2019s crew of snow safety and ski patrol personnel undertook their typical mitigation work over the next few days. They assessed where within A-Basin\u2019s operational boundaries avalanche danger was highest due to the wind-loading of the wet snow, among other factors.<\/p>\n
Which leads to Thursday morning. Another wet, overnight storm dumped even more potentially unstable snow at the ski area. A-Basin\u2019s forecaster was the first to arrive at 5 a.m., like any other day, developing a weather and avalanche report for the ski area. And boy was Thursday morning a big morning.<\/p>\n
\u201cWe had a lot more explosives that were being prepared that morning based on the amount of snow that we received,\u201d Evanczky said. \u201cLarger quantities of explosives, larger pay load of explosives and, as well, more teams, more people, more resources were being planned for so that we could run routes all over the hill and attempt to open up on time.\u201d<\/p>\n
That was the premise Evanczky and A-Basin worked under until the ski area got word that the Colorado Department of Transportation was going to be \u201cshooting\u201d The Widowmaker and Little Professor that day as part of their avalanche mitigation work. At that juncture, the ski area and CDOT coordinated efforts.<\/p>\n
\u201cIt\u2019s not every day that they do mitigation on the highway,\u201d Evanczky said.<\/p>\n
From there, in a wait-and-see situation due to CDOT\u2019s plans, the ski area focused on transporting essential employees up to the Basin where they\u2019d quarantine inside the A-frame at the base area. Any and all employees on the lower mountain were transported to the A-frame because of its eastern-most location within the base area. That far east, the A-frame was deemed out of the way of a potential debris field due to a Little Professor slide. For comparison, A-Basin\u2019s Early Riser parking lot and the bottom of the Pallavicini lift were deemed to potentially be in the slide\u2019s path.<\/p>\n
While that was going on at the bottom of the mountain, at the ski area\u2019s Snow Plume Refuge near the top of the Lenawee Mountain lift, Evanczky had an all-hands-on-deck group of ski patrollers ready to run avalanche mitigation routes from the top of the ski area. That was despite the fact that A-Basin wouldn\u2019t be able to use the Pallavicini lift or the Montezuma lift due to the day\u2019s inclement conditions. The team also couldn\u2019t egress through the base area due to the avalanche danger from across the road.<\/p>\n
\u201cWe came out and we did trigger some avalanches with explosives and ski-cutting,\u201d Evanczky said. \u201cHowever, they were relatively small. We didn\u2019t have any big activity inbounds that day.\u201d<\/p>\n
In the middle of ski patrol\u2019s morning mitigation work inbounds on Thursday, CDOT shot The Little Professor as part of its mitigation work. But nothing slid. It was at this point CDOT and A-Basin decided it was best not to open the ski area on Thursday due to continuing concerns with The Little Professor. With the mountain officially closed down to guests for the day, A-Basin shuttled employees in caravans down the mountain at 2:15, 3:15 and 4:15 p.m. The shifts, Evanczky said, were to limit exposure to a potential slide on the Little Professor or The Widowmaker, as the stormy conditions were forecast to continue into the night. Evanczky considered staying put overnight at the A-Frame along with A-Basin\u2019s boss of bosses, chief operating officer Alan Henceroth. But Evanczky headed down to Keystone to rest before a Friday morning that he knew would be loaded with mitigation work.<\/p>\n
When Friday morning came around, there was an atypical objective for Evanczky and his crew. Along with mitigating avalanche terrain inbounds, A-Basin sent a crew of six ski patrollers along with Evanczky to the top of Loveland Pass to conduct mitigation work at Widowmaker and The Little Professor. Working with CDOT, the group skinned in to the start zones of those two slides around noon to deploy even larger explosives within the paths.<\/p>\n
With visibility opening up, Widowmaker slid but The Little Professor did not. Evanczky said it was determined after the mitigation effort that the Little Professor did not continue to pose an avalanche risk. This was partially because of the mitigation work CDOT conducted in the path earlier in the season.<\/p>\n
Then, observing the debris littered in the highway from Widowmaker, Evanczky and the rest of A-Basin\u2019s personnel realized it was going to take more time than expected to dig the highway out from what Evanczky estimated was a 30\u201340-foot deep snow mound.<\/p>\n
\u201cIt took one of our snowcats to help push the snow around,\u201d Evanczky said. \u201cWe had our loaders, CDOT had their loaders. It took the rest of the day.\u201d<\/p>\n
After all that work, come Saturday morning, A-Basin opened up vast portions of deep, untracked powder to the public. It was terrain that Henceroth described as \u201cas incredible as you could ever want.\u201d<\/p>\n
For Evanczky and A-Basin, it was worth the wait.<\/p>\n
\u201cHands down it was one of the greater events that gave us great skiing,\u201d Evanczky said. \u201c\u2026 This is one of the greater Marches I\u2019ve seen, for sure. When you look at our historical records, it\u2019s not the most snow we\u2019ve ever received in March, but our average in March is typically around 50 inches and we\u2019ve well exceeded that. We\u2019re at 7 feet of snow by now.\u201d<\/p>\n