More than 80 avalanches have been observed since a major snowstorm pounded much of Colorado last Tuesday, nearly half of them capable of burying someone, according to the Colorado Avalanche Information Center. Two were rated large, one near Red Mountain Pass and the other at Wolf Creek Pass, both in southern Colorado. Of the 82 avalanches reported to the CAIC, 40 occurred naturally, 17 were the result of avalanche control work and 20 were caused by skiers, snowmobiles or snowshoers.