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Avalanches happen quickly, and often without warning. CNN's Jennifer Grey learns how to get out alive.

I was riding on Pelican Butte and had to outrun an avalanche. I'm yelling and excited down at the bottom of the hill because I lived through it not because I purposely started it. Stay safe out there and keep situational awareness!!!

In this video we examine how an avalanche is triggered, resulting in a dramatic collapse of snow from the mountainside. There are three main elements that make them more likely to occur; the gradient of a slope, the quantity of snowfall and the climate conditions. Avalanches occur most commonly in areas with repeated, heavy snowfall.

Gray Butte - West Face - Sparse trees near treeline, 7,800 feet, 38 degrees: An intentional ski cut along the convexity of this avalanche path resulted in a good size slide around 2:30pm. The crown was ~2-2.5 feet deep, 60 feet wide and ran ~500 feet into denser forest. Nobody was caught. A brief period of graupel fell on top of the snowpack Friday December 9th, just before the weekend storm. Approximately 2-2.5 feet of fresh snow fell on top of this graupel layer over a 40-hour between Saturday December 10 to Sunday December 11. The slab failed on this weak layer of graupel. This is the same layer where the avalanche on Coyote Butte yesterday morning failed, 12.10.22

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We have issued AVALANCHE WARNINGS for our entire Forecast Area. In the Galena Summit and Eastern Mtns and Soldier and Wood River Valley Mtns Zones the Avalanche Danger is EXTREME. Avoid all steep slopes and terrain exposed to hazard from above. Extraordinarily dangerous conditions exist.

I was in Avalanche | Winter is awesome

Skier captures video of massive avalanche on Park City Ridgeline

Snow buried California and Nevada. Snowfall today, zero visibility, roads closed Snow was falling heavily in the Sierra Nevada as a winter storm bringing high winds sent ski lift chairs swinging and closing mountain highways. Meanwhile rain at lower elevations triggered flooding Sunday across large swaths of California to Nevada. More than 250 miles or 400 km of the Sierra north of Reno south to Yosemite National Park remain under a winter storm warning until late Sunday or early Monday. Heavenly ski resort on Lake Tahoe closed some operations Saturday as the weight of the storm hit. To the south, Mammoth Mountain reported that more than 20 inches or 51 cm of snow fell on Saturday, with another possible 2 feet or 0.6 meters on Sunday as the tail end of the system moves through the eastern Sierra. The UC Berkeley Central Sierra Snow Lab reported Sunday morning that more than 43 inches or 110 cm had fallen in the span of 48 hours. The 70-mile or 112-km stretch east of US Interstate 80 was closed Saturday due to zero visibility from the northern California city of Colfax to the Nevada state line. Chains are required on most of the rest of I-80 in the mountains from Reno to Sacramento. Sections of California Highway 89 were also closed due to heavy snow between Tahoe City and South Lake Tahoe, the highway patrol said. The US Forest Service issued an avalanche warning for inland in the mountains west of Lake Tahoe where it said several feet of fresh snow and strong winds would result in dangerous avalanche conditions. Gusts of up to 50 miles/hour or 80 km/hour sent trees into homes in Sonoma. Heavy rain is forecast over the weekend from San Francisco to the Sierra peaks of up to 2 inches or 5 cm in the Bay Area and up to 5 inches or 13 cm in Grass Valley northeast of Sacramento.

Snowboarders rescue two people buried in avalanche | ABC News

Two contrasting view points of one of the world's largest ever avalanches. Filmed in Norway by All Star Films, multi-camera direction by Thom Goddard, in 2015. Copyright: Thom Goddard 2018 onwards - . Please DM for permissions. An avalanche (also called a snow slide) is a rapid flow of snow down a slope, such as a hill or mountain. Avalanches can be set off spontaneously, by such factors as increased precipitation or snow pack weakening, or by external means such as humans, animals, and earthquakes. Primarily composed of flowing snow and air, large avalanches have the capability to capture and move ice, rocks, and trees. Avalanches occur in two general forms, or combinations thereof: slab avalanches made of tightly packed snow, triggered by a collapse of an underlying weak snow layer, and loose snow avalanches made of looser snow. After being set off, avalanches usually accelerate rapidly and grow in mass and volume as they capture more snow. If an avalanche moves fast enough, some of the snow may mix with the air, forming a powder snow avalanche. Though they appear to share similarities, avalanches are distinct from slush flows, mudslides, rock slides, and serac collapses. They are also different from large scale movements of ice. Avalanches can happen in any mountain range that has an enduring snowpack. They are most frequent in winter or spring, but may occur at any time of year. In mountainous areas, avalanches are among the most serious natural hazards to life and property, so great efforts are made in avalanche control. There are many classification systems for the different forms of avalanches, which vary according to their users' needs. Avalanches can be described by their size, destructive potential, initiation mechanism, composition, and dynamics.

😱 Alaska AVALANCHE 💥 #Shorts

‪idiot jumps in dangerous peruvian glacial lake causes avalanche‬

Two contrasting view points of one of the world's largest ever avalanches. Filmed in Norway by All Star Films, multi-camera direction by Thom Goddard, in 2015. Copyright: Thom Goddard 2018 onwards - . Please DM for permissions. An avalanche (also called a snow slide) is a rapid flow of snow down a slope, such as a hill or mountain. Avalanches can be set off spontaneously, by such factors as increased precipitation or snow pack weakening, or by external means such as humans, animals, and earthquakes. Primarily composed of flowing snow and air, large avalanches have the capability to capture and move ice, rocks, and trees. Avalanches occur in two general forms, or combinations thereof: slab avalanches made of tightly packed snow, triggered by a collapse of an underlying weak snow layer, and loose snow avalanches made of looser snow. After being set off, avalanches usually accelerate rapidly and grow in mass and volume as they capture more snow. If an avalanche moves fast enough, some of the snow may mix with the air, forming a powder snow avalanche. Though they appear to share similarities, avalanches are distinct from slush flows, mudslides, rock slides, and serac collapses. They are also different from large scale movements of ice. Avalanches can happen in any mountain range that has an enduring snowpack. They are most frequent in winter or spring, but may occur at any time of year. In mountainous areas, avalanches are among the most serious natural hazards to life and property, so great efforts are made in avalanche control. There are many classification systems for the different forms of avalanches, which vary according to their users' needs. Avalanches can be described by their size, destructive potential, initiation mechanism, composition, and dynamics.

We were 9 Brits and 1 American on a guided tour of the Tian Shan mountains in Kyrgyzstan. We’d just reached the highest point in the trek and I separated from the group to take pictures on top of a hill/cliff edge. While I was taking pictures I heard the sound of deep ice cracking behind me. This is where the video starts. I’d been there for a few minutes already so I knew there was a spot for shelter right next to me. I was on a cliff edge, so I could only run away from the shelter (hence why I don’t move). Yes I left it to the last second to move, and yes I know it would have been safer moving to the shelter straight away. I’m very aware that I took a big risk. I felt in control, but regardless, when the snow started coming over and it got dark/harder to breath, I was bricking it and thought I might die.

The Singapore Armed Forces’ Special Operations Task Force led a counter-terrorism exercise at the F1 pit building on Monday night (Aug 2), involving two Super Puma helicopters. Watch what happened in this video supplied by MINDEF. About the exercise:

YAMAM - Israel's Counter Terrorism Unit | SWAT | הימ"מ בפעולה

SPF, with the support from other Home Team agencies, conducted an island-wide exercise at various locations from 18 to 19 January 2016. This exercise tested the readiness of our forces in responding to multiple island-wide armed attacks. More than 1,800 SPF and SCDF officers were involved in this exercise. As part of our preparations to deal with national security incidents, the SPF will continue to conduct such similar exercises.

The founding United Nations (UN) Charter established the three pillars of the institution: peace and security, human rights and development. Yet, over the past 20 years, a fourth pillar – counter-terrorism – has begun to emerge. Now in 2021, after many UN Security Council resolutions, a global strategy from the UN General Assembly, and the creation of a stand-alone UN Office of Counter-terrorism – significant resources are being dedicated to the UN’s role in countering terrorism. How did this happen and is this such a good idea for the UN institution? In 2020 Saferworld released a new discussion paper exploring the impact and future threats of this shift – A fourth pillar for the United Nations? The rise of counter-terrorism. Watch this video to find out what we discovered and what we suggest can be done. Photo credits: UN Photo/Manuel Elias, UN Photo/Gema Cortes, UN Photo/Albert González Farra

Heavily armoured Toyota Landcruisers used by Counter-Terrorism Specialist Firearms Officers (CTSFOs) in London, including during a visit by US President Donald Trump in 2019.

The Garda Emergency Response Unit with the assistance of Irish Rail hosted two days of counter terrorism training in Dublin. This European Funded project brought together 70 officers from special intervention units across twelve countries for a two day workshop

Mindful of the increasing threat posed by the misuse of new and emerging technologies, the United Nations Security Council Counter-Terrorism Committee has decided to hold a special meeting on this theme, with the support of its Executive Directorate (CTED). The special meeting on “Countering the Use of New and Emerging Technologies for Terrorist Purposes” will begin with a soft opening and associated events in Mumbai, India on 28 October 2022 and continue with a full day’s meeting in New Delhi, India on 29 October 2022. The Special Meeting will specifically focus on three significant areas where emerging technologies are experiencing rapid development, growing use by Member States (including for security and counter-terrorism purposes), and increasing threat of abuse for terrorism purposes, namely (a) the Internet and social media, (b) terrorism financing, and (c) unmanned aerial systems (UAS). It will provide opportunities to discuss existing and evolving threats, the deployment of new and emerging technology to counter those threats, continuing challenges and good practices, as well as a range of related human rights and gender considerations.

David Scharia, Chief of Branch, United Nations Counter-Terrorism Committee Executive Directorate, in an exclusive interview with ANI, hailed India as the chair and said on October 26 that he was 'grateful' to India for not just focussing on its own challenge of terrorism but on dealing with global issues and to find global solutions to them.

UN Holds Counter-Terrorism Conference In Abuja

Are you interested in studying Global Security and Terrorism? Here’s what you can expect from your degree.