Wyoming
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Platte, Goshen, Albany, Carbon, Laramie
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Wheatland, Torrington
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February 22, 2017
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Winter Storm
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"A powerful winter storm impacted a large part of southeast Wyoming and the western Nebraska Panhandle on February 22-24, 2017. The storm originated over eastern Siberia February 15, and intensified as it tracked across the Gulf of Alaska." ... "Days preceding the storm were warm and dry, characterized by temperatures in the 60s and lower 70s. As the cold front passed, high temperatures at Alliance, Nebraska, fell from 73 degrees on February 21 to 34 degrees February 23. The snow began for areas west of the Laramie Range on the afternoon of February 22, and spread east of Interstate 25 early in the morning on February 23. Snowfall rates in excess of 2 inches per hour were observed before diminishing in the evening and overnight February 24. A broad swath of 12+ inches of snow was reported, including a 20-mile wide band of 20 to 25 inches extending from near Wheatland, Wyoming, east through Torrington, Wyoming, and Alliance, Nebraska. The dry air shown by the numerical models caused a sharp cutoff in snow amounts to the south, with only 2 to 5 inches along the Interstate 80 corridor from east of Cheyenne, Wyoming, to Sidney, Nebraska. One to three inches of snow fell in and around Laramie. In addition to the snow, gusty northerly winds resulted in considerable blowing and drifting snow, especially across western Carbon County, Wyoming, with blizzard conditions around Muddy Gap. This storm resulted in major impacts to transportation, resulting in numerous road closures across a large part of the region." - National Weather Service
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Utah
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January 01, 1949
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Winter Storm, High Wind
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10
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"Utah's most severe winter since 1899 ... It was the coldest winter on record, with record amounts of seasonal snowfall ... Nearly a 25 percent loss in some livestock herds reported. Many fruit trees were killed. Wildlife struggled for existence. Tourist trade reached an all-time low, and 10 people died from exposure." - Western Regional Climate Center
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Wyoming
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Converse, Niobrara
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Lusk, Manville, Van Tassell, Lance Creek, Cheyenne, Laramie
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October 04, 1998
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Winter Storm, High Wind
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Presidential Disaster Declaration. "On October 4-5, 1998, 8 to 12 inches of heavy, wet snow fell across eastern Converse County and Niobrara County. The heavy snow downed trees and power lines. Ice buildup was up to 6 inches around many power lines. The build-up of ice around the power lines, along with 40 mph winds, caused 200 power poles to snap. Four thousand people were without power for up to five days in the Lusk, Manville, Van Tassell, and Lance Creek areas. Interstate 80 between Cheyenne and Laramie was closed due to near zero visibilities." - WY Hazard Mitigation Plan 2021-2026
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Wyoming
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Crook, Weston, Campbell
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Moorcroft, Echeta
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November 01, 2000
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Winter Storm, High Wind
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Presidential Disaster Declaration. "On November 1, 2000, an intense winter storm brought high winds and heavy, wet snowfall to portions of northeastern Wyoming. In Crook and Weston counties, snowfall rates were one to two inches an hour. Snowfall totals in the plains were from 4 to 8 inches, while in the Bear Lodge Mountains, totals were from 8 to 24 inches. The Four Corners area in northeastern Weston County reported the most snowfall at 24 inches. High, sustained winds up to 40 mph with gusts to 60 mph caused blizzard conditions and toppled 600 power poles. Seven thousand people were without power; almost 15 miles of lines had to be replaced. The city of Moorcroft had more than 150 stranded semi-trucks after the interstate was shut down. In Campbell County, the temperatures were too warm for snow and rain fell throughout the day, but high winds were reported with gusts more than 50 mph at times. The highest gust in Campbell County was 64 mph at Echeta." - WY Hazard Mitigation Plan 2021-2026
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Wyoming
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Sublette, Fremont, Lincoln, Teton
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Big Piney, Pinedale, Daniel, Lander
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October 16, 2016
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Winter Storm, High Wind
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"On October 16, 2016, strong, moist westerly flow off the Pacific Ocean brought abundant moisture to the mountains and valleys of western Wyoming. The precipitation fell as snow in the mountains, with the heaviest snow of 12 to 18 inches falling in the Salt River, Wyoming, and western Wind River ranges. The position and strength of a jet streak helped to produce and sustain persistent snow in a swath from Big Piney to Pinedale in Sublette County. Snowfall rates reached up to 2 inches an hour during the late evening of Sunday, October 16, and early morning hours of Monday, October 17. Totals within this heavy snow band ranged from 8 inches to 15 inches with the greatest totals from around Daniel to Pinedale. In Big Piney, the heavy, wet snow caused the collapse of a school bus building roof resulting in $15,000 in damages. East of the Continental Divide the story was strong downslope wind. Wind gusts in the Lander Foothills topped 70 mph with a peak of 80 mph along the North Fork of the Popo Agie River. The strong winds blew over a tree in a Lander residential area." - WY Hazard Mitigation Plan 2021-2026
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Wyoming
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Teton, Park, Fremont, Sublette, Natrona
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Jackson, Wilson, Cody, Teton Village, Lander, Casper
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February 06, 2017
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Winter Storm, High Wind
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"On February 6, 2017, a combination of a strong Pacific trough and cold front, an ample supply of moisture combined to bring very heavy snow to much of western Wyoming. The highest amounts fell in the Tetons where almost 3 feet of new snow occurred at the Jackson Hole Ski resort. Heavy snow also fell in the Salt and Wyoming Range where 32 inches of snow occurred at the Indian Creek SNOTEL. Other heavy snowfall amounts included 25 inches at Deer Creek in the Wind River Range, 18 inches at Two Oceans Plateau in Yellowstone, 16 inches near Wilson, and 8 inches in Cody Alpine. The heavy snow combined with gusty winds to produce very low visibility and avalanches that shut down many roads including Teton Pass, Hoback Junction and South Pass. In Jackson, the heavy snow load caused the collapse of the roof onto the Sears Department Store. In addition, strong winds occurred on the evening of the 7th. These strong winds combined with heavy wet snow to down 17 power poles along Highway 390. This led to a power outage that lasted through the 11th. Near Teton Village, strong winds estimated over 70 mph, combined with heavy snow to down 17 power poles which led to a power outage lasting through the 11th. Jackson Hole Ski resort was closed through Monday the 13th. Meanwhile, strong wind occurred east of the Divide and across southern Wyoming. The maximum wind gusts included 96 mph at Camp Creek in the Green and Rattlesnake Range, 72 mph near Lander and 65 mph along Outer Drive south of Casper." - WY Hazard Mitigation Plan 2021-2026
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Wyoming
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Carbon
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Arlington
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October 19, 2019
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Winter Storm, High Wind
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1
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"On October 19, 2019, a deepening low pressure system and frontal boundary moved across the region producing widespread high winds across southeastern Wyoming with light snowfall while in Carbon County blizzard conditions were reported by Arlington stopping traffic for a period of time. Heavy snow was reported in the mountain ranges in the area with close to two feet in the highest spots of the Snowy Range heavy snow accumulations were estimated by several area sensors including the Blackhall Mountain with 16.5 inches of snowfall and the Webber Springs with 12.0 inches. A huntsman went missing during the snowstorm prompting area search and rescue, cadaver dogs and civil air patrols in hopes of finding and recovering the individual. After a week of searching, the Carbon County Sheriff's Office suspended the operations. Given that the individual has not been recovered, a proper autopsy to determine likely cause of death remains unknown though given the winter elements of wind, snow and subsequent freezing temperatures, assumption will be made to declare the fatality as direct." - WY Hazard Mitigation Plan 2021-2026
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Wyoming
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Park, Teton
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June 12, 2022
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Flood
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"Unprecedented precipitation and flooding clobbered Yellowstone National Park starting Sunday, destroying bridges, making roads impassable, stranding scores of people and wreaking untold havoc on infrastructure within Northwest Wyoming’s tourism engine. The scope of the damage prompted park officials to close all park entrances Monday.
A U.S. Geological Survey gauge on the Lamar River near the Tower Ranger Station tells the tale of the remarkable weather event. The tributary to the Yellowstone River on Monday topped 18,000 cubic feet of water per second, which surpassed the previous daily record by nearly 50%. The Lamar rose so high that its peak water level, 17 feet over the riverbed, surpassed the gauge’s “operational limit” by 2 feet, and the water level was 5 feet higher than during any other time in 82 years of recordkeeping.
The Yellowstone River water level at the Corwin gauge approached 14 feet, shattering a 104-year-old record by 2.5 feet, according to its USGS monitor." - WyoFile
WyoFile Images, NBC Images, AP Images
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Colorado
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Larimer
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Estes Park
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July 27, 2022
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Hail
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"A severe storm dumped several inches of hail on Estes Park Wednesday night, stalling traffic and prompting the need for snowplows to clean up the mess. The storm hit just before 10 p.m. with hail that was likely smaller than 1 inch, but there was a lot of it – enough to trap vehicles on East Elkhorn Avenue (U.S. 36)." - 9News
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Colorado
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Larimer
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July 15, 2022
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Flood
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2
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"Flooding hit the Crystal Mountain area of Larimer County, about 100 miles north of Denver, submerging roads and bridges. The sheriff’s office had received reports of a camping trailer containing a woman and girl that had swept away. The authorities found the two of them dead on Friday evening.
Floods also destroyed one home and caused minor damage to at least five others, according to the authorities. The U.S. Forest Service has temporarily closed large swaths of land in the Arapaho and Roosevelt National Forests nearby, and crews stayed out until late Saturday evening to repair roads." - The New York Times
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