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Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. -W /n/i? U.S. Forest Service Westwide Avalanche Network FEBRUARY 1991 February brought subnormal snows throughout the West. It was one more bitter pill for the drought-stricken Sierra of California and the Sawtooth Range of Idaho. In the Sierra, Alpine Meadows recorded but 22# of normal; Squaw Valley, 12#; and Mammoth Mtn., 5%. In the Cascades of Oregon, Mt. Hood Meadows managed only 15# of normal snows. In Washington, the weather was^only slightly snowier. Mt. Rainier and Crystal Mtn. received ample rain (6.57” at Paradise-Mt. Rainier on the 19th-20th) but both got only 40# of normal snowfall. Stevens Pass recorded 24" of snow on the 20th, but finished the month with only 46# of normal. In the Intermountain area, Sun Valley, ID received all of 1 of snow less than 3% of normal. In Montana, Big Sky got 51#; Big Mountain, 4l#; and Bridger Bowl, 38#. In Wyoming, Teton Pass got 6l# while Jackson Hole only got 31# of normal. And in Utah, Snowbird was helped by 29" on the 17th-l8th and wound up with 52#. In Colorado, the first 12 days of February were dry throughout, then light snows favored the northern third of the mountains. In the northern mountains of Colorado, Copper Mtn. got 98# of normal while all other sites recorded 62-93#; in the central mountains, Aspen Mtn. reported 98# while the other sites got 49-72#; and in the southern mountains, the range was 26-44#. In the two extremes of the West, Taos, NM received a miserly 20# of normal while Alyeska, AK managed 64#. Let's give a big yawn to February snowfall. Nine avalanche incidents were reported in February, resulting in 14 people caught, 6 partly buried, 1 buried, 2 injured, and 2 killed. Here’s a summary of the notable events: On the lst-4th, an avalanche cycle rippled through the Brooks Range of northern Alaska. Two pipeline workers on Atigun Pass were caught in avalanches, one while driving a truck and the other while driving a grader. The grader was mostly buried and slightly damaged. On the 17th on Cottonwood Pass, CO, a snowmobiler was buried and killed in what was in all likelihood a natural avalanche. While three men were riding up the summer road on the east side of the pass, a cornice block on the ridge above broke loose and triggered a slab avalanche that swept one man and his machine off the road. One survivor, probing with road-marker wands and digging with helmet and windshield, located and uncovered the victim from 4 feet of snow in 45 minutes. It was too late. Rocky Mountain Forest and Range Experiment Station On the 23rd on Mt. Washington, NH, a party of three skiers/snowboarders climbing up Tuckerman Ravine triggered an avalanche that carried all three down and also overran two other people below. All five were partly buried, and one suffered leg injuries and had to be carried out. The following day, the 24th, two ice climbers in Huntington Ravine triggered an avalanche that carried both men on a 700-foot fall down an ice gully. Neither was buried, but one suffered a broken pelvis, and the other was dead from head injuries, despite wearing a helmet. Seasonal avalanche-accident totals through February are 6l incidents, 72 people caught, 19 partly buried, 11 buried, 6 injured, and 5 killed; 6 vehicles have been caught and 2 buildings damaged. 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Avalanche notes PDF

6 Pages·1991·0.44 MB·English
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Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. -W /n/i? U.S. Forest Service Westwide Avalanche Network FEBRUARY 1991 February brought subnormal snows throughout the West. It was one more bitter pill for the drought-stricken Sierra of California and the Sawtooth Range of Idaho. In the Sierra, Alpine Meadows recorded but 22# of normal; Squaw Valley, 12#; and Mammoth Mtn., 5%. In the Cascades of Oregon, Mt. Hood Meadows managed only 15# of normal snows. In Washington, the weather was^only slightly snowier. Mt. Rainier and Crystal Mtn. received ample rain (6.57” at Paradise-Mt. Rainier on the 19th-20th) but both got only 40# of normal snowfall. Stevens Pass recorded 24" of snow on the 20th, but finished the month with only 46# of normal. In the Intermountain area, Sun Valley, ID received all of 1 of snow less than 3% of normal. In Montana, Big Sky got 51#; Big Mountain, 4l#; and Bridger Bowl, 38#. In Wyoming, Teton Pass got 6l# while Jackson Hole only got 31# of normal. And in Utah, Snowbird was helped by 29" on the 17th-l8th and wound up with 52#. In Colorado, the first 12 days of February were dry throughout, then light snows favored the northern third of the mountains. In the northern mountains of Colorado, Copper Mtn. got 98# of normal while all other sites recorded 62-93#; in the central mountains, Aspen Mtn. reported 98# while the other sites got 49-72#; and in the southern mountains, the range was 26-44#. In the two extremes of the West, Taos, NM received a miserly 20# of normal while Alyeska, AK managed 64#. Let's give a big yawn to February snowfall. Nine avalanche incidents were reported in February, resulting in 14 people caught, 6 partly buried, 1 buried, 2 injured, and 2 killed. Here’s a summary of the notable events: On the lst-4th, an avalanche cycle rippled through the Brooks Range of northern Alaska. Two pipeline workers on Atigun Pass were caught in avalanches, one while driving a truck and the other while driving a grader. The grader was mostly buried and slightly damaged. On the 17th on Cottonwood Pass, CO, a snowmobiler was buried and killed in what was in all likelihood a natural avalanche. While three men were riding up the summer road on the east side of the pass, a cornice block on the ridge above broke loose and triggered a slab avalanche that swept one man and his machine off the road. One survivor, probing with road-marker wands and digging with helmet and windshield, located and uncovered the victim from 4 feet of snow in 45 minutes. It was too late. Rocky Mountain Forest and Range Experiment Station On the 23rd on Mt. Washington, NH, a party of three skiers/snowboarders climbing up Tuckerman Ravine triggered an avalanche that carried all three down and also overran two other people below. All five were partly buried, and one suffered leg injuries and had to be carried out. The following day, the 24th, two ice climbers in Huntington Ravine triggered an avalanche that carried both men on a 700-foot fall down an ice gully. Neither was buried, but one suffered a broken pelvis, and the other was dead from head injuries, despite wearing a helmet. Seasonal avalanche-accident totals through February are 6l incidents, 72 people caught, 19 partly buried, 11 buried, 6 injured, and 5 killed; 6 vehicles have been caught and 2 buildings damaged. 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