A recent avalanche in Northern California’s Sierra Nevada has highlighted the dangers that can arise after heavy snowfall. The avalanche, which occurred near Lake Tahoe, tragically claimed the lives of eight backcountry skiers. Rescuers are still searching for one more skier, while six individuals managed to survive.
This incident unfolded during a winter storm that brought substantial snow to an area that had been dry for weeks. Craig Clements, a meteorology professor at San Jose State University, noted that the heavy snow piled on top of an earlier hard layer created unstable conditions. The new snow didn’t bond well with this older layer, forming a “storm slab” that can easily slide when disturbed.
It’s important to note that the risks of avalanches are highest within the first 48 hours after significant snowfall, and warnings were already issued for the region. Conditions in the mountains are complex; snow crystals can change shape after dry spells, making it harder for new snow to stick.
Many skiers and snowboarders may not realize the risks involved in backcountry activities, especially under these conditions. Experts warn that if there had been more consistent snowfall earlier in the winter, different layers might have bonded better, reducing the chances of such catastrophic avalanches.
While questions about climate change often arise in discussions about extreme weather, Clements asserted this particular avalanche is typical of historical patterns in the Sierra Nevada. He emphasized that the event is more about current meteorological conditions than about climate shifts.
In the wake of this tragedy, authorities are investigating whether the ski group should have proceeded with their trip given the impending storm. The group had been on a three-day hike in the backcountry, carrying their food and supplies to remote huts in the area. However, the day of the avalanche, the Sierra Avalanche Center issued a watch, warning of possible large slides.
This incident serves as a grim reminder of the risks inherent in exploring backcountry areas, especially during volatile weather conditions. It’s crucial for outdoor enthusiasts to stay informed and cautious, particularly in regions known for their unpredictable weather patterns and avalanche risks.
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Shannan Moon,environment,Climate,U.S. news
