{"error":0,"html":"\n\n\u003Cdiv class=\"row\"\u003E\n \u003Cdiv class=\"col-sm-6\"\u003E\n \u003Cbutton type=\"button\" class=\"btn btn-large btn-block btn-primary p\" data-dismiss=\"modal\" aria-label=\"Close\"\u003E\u003Cspan aria-hidden=\"true\"\u003E\u003Ci class=\"material-icons\"\u003E\u003C\/i\u003E Back To Report List\u003C\/span\u003E\u003C\/button\u003E\n \u003C\/div\u003E\n \u003Cdiv class=\"col-sm-6\"\u003E\n \u003Ca class=\"btn btn-large btn-block btn-primary p\" target = \"_blank\" href = \"https:\/\/avalanchenearmiss.org?pdf=36\"\u003E\u003Ci class=\"material-icons\"\u003E\u003C\/i\u003E Print View (pdf)\u003C\/a\u003E\n \u003C\/div\u003E\n\u003C\/div\u003E\n\n\n\u003Cdiv class=\"panel panel-default\"\u003E\n \u003Cdiv class=\"panel-body\"\u003E\n \u003Cdiv class=\"page-header\"\u003E\u003Ch2\u003EBasic Info\u003C\/h2\u003E\u003C\/div\u003E\n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EEvent date\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E2019-02-21\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EDate published\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E2019-11-07\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EIndustry\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EGov Public Safety\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003C\/div\u003E\n\u003C\/div\u003E\n\n\u003Cdiv class=\"panel panel-default\"\u003E\n \u003Cdiv class=\"panel-body\"\u003E\n \u003Cdiv class=\"page-header\"\u003E\u003Ch2\u003EEvent Description\u003C\/h2\u003E\u003C\/div\u003E\n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EActivity\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ETraveling in terrain open to the public, Collecting data\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EDescription of event\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EOn February 21, 2019, myself and two other avalanche professionals had a close call when a very large natural avalanche hit an area we had just been in 15 minutes earlier. We had ascended an East facing sub-ridge of a peak and turned around due to increasing strong winds, shooting cracks and a recent wind slab observed on a similar aspect. While we were taking off our skins before descent a second avalanche released on an East facing slope and funneled into a gully just North of our location. This avalanche was much larger than the first and had a ~1000' wide crown and ran ~1500' in vertical elevation. We did not see this avalanche release, but I saw the debris in motion in the lower part of the gully. We descended our general route from 2400\u2019 through some hemlock trees and a meadow and regrouped around ~1600' in a low-angle clearing. As we looked up at the previous avalanche, a third natural avalanche (D3) released from the upper portion of the same gully, on a SE aspect. A large powder cloud caused us to retreat even further down slope a few more hundred yards. The powder-blast and a portion of the debris crested the sub-ridge and hit a hemlock grove we had skinned through just before deciding to turn around. When the powder cloud settled, most of the debris had funneled into the same gully as the second avalanche, away from our re-grouping location at the bottom of the run. The force of this avalanche broke numerous hemlocks up to 8\u2033 in diameter, and one hemlock tree was completely uprooted. \r\nStrong Northwest winds transporting new snow and overloading South and East facing terrain initiated the three avalanches we witnessed that day. Three to four inches of low-density snow had fallen overnight and was available for transport in addition to 5-6\" of settled snow that had fallen incrementally between 2\/16-2\/19 and covered a layer of near surface facets. The weather forecast for that day (2\/21) called for sustained 20-30mph Northwest outflow winds \u201cgap winds\u201d with gusts in the 40\u2019s to 50\u2019s along taller peaks and in channeled terrain. \r\nThis was the third outflow (Northwest) gap wind event to hit our region over the last 10 days. The first one started on 2\/13 and didn\u2019t cause any notable avalanche activity. It had been over a week since Summit Lake received any new snow and there was only a few inches of near surface facets available for transport. The next outflow event happened on 2\/19 after 5-6\u201d of snow fell over three days. Ridge tops winds were in the 20-30's mph and numerous natural D1-D1.5 wind slabs released in Turnagain Pass and in Summit Lake on East aspects, but nothing in older layers.\r\nOn the morning of 2\/21, I drove through Turnagain Pass on my way to Summit Lake. The winds were already moving snow along ridgetops and in valley bottoms. Summit Lake is just outside of the advisory zone and does not have a danger rating, but we routinely mention it in the forecast discussion due to the close proximity to Turnagain Pass, ~12 miles away. Summit Lake typically has a drier climate and a thinner weaker snowpack compared to Turnagain Pass. The danger rating for Turnagain Pass was CONSIDERABLE in the Alpine and MODERATE in the Treeline and Below Treeline zones for wind slabs. I wrote the forecast that morning and included a bottom line statement for Summit Lake: \"This area has a very poor snowpack structure with multiple weak layers. Triggering a larger, more dangerous slab, breaking deeper in the snowpack is possible today as well as natural wind slabs.\" \r\nWe completed a pre-trip AM form and discussed the weather forecast and avalanche problems of natural wind slabs and the potential for triggering a persistent slab. Our objective was to try to access the alpine to look at the 2\/16 facets and MLK layer and get a sense of slab depths and reactivity on these layers. We were each familiar with the route and had previously measured slope angles to be less than 30 degrees and felt like the terrain was manageable.\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ELessons learned\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EIn hindsight, we all agreed our route was not suitable for the avalanche conditions we encountered, and we minimized the potential size of the avalanche hazard. The second and third avalanches were much larger than we expected. We had been tracking the basal facets in this zone and felt like an avalanche on this layer was unlikely. It had been a month and a half since we\u2019d seen an avalanche on the basal facets and stability tests were unreactive on this layer. The amount of snow being transported was more than we had taken into account. The 3-4\u201d that fell overnight was very low density and we estimate there was more like a 12\u201d total in the alpine between the new snow overnight and snow earlier in the week. We estimated that some of the gusts we experienced near our turn-around point of 2400' were between 40-50mph and much stronger near ridge tops (3500'.) We didn\u2019t recognize the exposure of the terrain until we saw a bunch of flagged hemlock trees in the grove as we picked our way through it. Until this point we didn\u2019t put much weight on the obvious clues, until we realized we were more exposed than we previously thought. \r\nI\u2019ve been trying to understand what other factors may have influenced my thinking that day. I was pretty tired and had been up since 4am to write the forecast. I didn\u2019t have a partner for the day, but really wanted an observation from this area. I learned of two other forecasters who were in the area and asked if I could join them. They had already chosen the route and wanted to get info in the alpine on an Eastern aspect. This was one of the few routes that we all felt was manageable to get above 3000\u2019. I was also influenced by the lack of avalanche activity that resulted from the previous two wind events and thought the route would be fine. I didn\u2019t take into account how much stronger the winds were that morning compared to the previous two wind events, especially the lower elevation wind. Both of my partners were avalanche instructors from courses I took 10-15+ years earlier. I was excited to tour with them and had only toured with one of them prior, aside from being a student. We were pretty focused on managing the micro terrain features in front of us and didn\u2019t discuss the bigger overhead hazard. I believe commitment, familiarity, fatigue, and expert halo all played a role in my personal decision making traps that day.\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ETravel mode\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ESki\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ESeverity of incident\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EModerate\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ECould this happen again?\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EYes\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EWhy or why not?\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EI would like to think this won't happen again, but due to the complexity of balancing weather, snowpack, terrain, and human error, its certainly possible.\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \n \u003C\/div\u003E\n\u003C\/div\u003E\n\n\u003Cdiv class=\"panel panel-default\"\u003E\n \u003Cdiv class=\"panel-body\"\u003E\n \u003Cdiv class=\"page-header\"\u003E\u003Ch2\u003EContributing Factors\u003C\/h2\u003E\u003C\/div\u003E\n\n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EField Team\/Individual\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EComplex snowpack or weather, Ill-defined roles, Mission planning, Familiarity, Overconfidence\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EOrganization\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003C\/div\u003E\n\u003C\/div\u003E\n\n\u003Cdiv class=\"panel panel-default\"\u003E\n \u003Cdiv class=\"panel-body\"\u003E\n \u003Cdiv class=\"page-header\"\u003E\u003Ch2\u003EWeather, Snowpack & Avalanche\u003C\/h2\u003E\u003C\/div\u003E\n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ESnow climate\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EContinental\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EPrimary weather event\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ELoading winds\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ESecondary weather event\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanches present in the previous 24 hours\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ENo\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EWas this a post-mitigation or assessment release?\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EUnknown\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanche problem type\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EPersistent Slab\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanche type\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003EHard Slab\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanche size - D scale\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ED3\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanche size - R scale\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ER4\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAvalanche trigger\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ENatural\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ESlope angle\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EElevation (ft)\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E3400\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAspect\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003ESE\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EComments\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003C\/div\u003E\n\u003C\/div\u003E\n\n\n\u003Cdiv class=\"panel panel-default\"\u003E\n \u003Cdiv class=\"panel-body\"\u003E\n \u003Cdiv class=\"page-header\"\u003E\u003Ch2\u003EAdditional Details\u003C\/h2\u003E\u003C\/div\u003E\n \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EWorkday began (date\/time)\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E2019-02-21 04:00:00\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EHours worked the previous 3 days\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E20\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003EAge at time of near miss\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E39\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003Cdiv class=\"row\"\u003E\u003Cdiv class=\"col-md-4 text-md-right\"\u003E\u003Cb\u003ESeasons worked as a professional\u003C\/b\u003E\u003C\/div\u003E\u003Cdiv class=\"col-md-8\" style=\"white-space:pre-line;\"\u003E15\u003C\/div\u003E\u003C\/div\u003E\u003Cp\u003E\u003C\/p\u003E \u003C\/div\u003E\n\u003C\/div\u003E\n\n\n\u003Cdiv class=\"row\"\u003E\n \u003Cdiv class=\"col-sm-6\"\u003E\n \u003Cbutton type=\"button\" class=\"btn btn-large btn-block btn-primary p\" data-dismiss=\"modal\" aria-label=\"Close\"\u003E\u003Cspan aria-hidden=\"true\"\u003E\u003Ci class=\"material-icons\"\u003E\u003C\/i\u003E Back To Report List\u003C\/span\u003E\u003C\/button\u003E\n \u003C\/div\u003E\n \u003Cdiv class=\"col-sm-6\"\u003E\n \u003Ca class=\"btn btn-large btn-block btn-primary p\" target = \"_blank\" href = \"https:\/\/avalanchenearmiss.org?pdf=36\"\u003E\u003Ci class=\"material-icons\"\u003E\u003C\/i\u003E Print View (pdf)\u003C\/a\u003E\n \u003C\/div\u003E\n\u003C\/div\u003E\n\n"}