Colorado
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Clear Creek
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April 20, 2013
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Avalanche
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5
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"The avalanche was quite large and engulfed the entire group from above at approximately 10:15am. The avalanche pushed all group members between 5 and 20 feet into the Sheep Creek gully. Five of the six members of the group were completely buried. The survivor was 3rd in line at the time of the accident, and was partially buried in very close proximity (touching) to the two group members in the front of the line. The survivor came to rest in an upright semi-seated position with his lower left arm free, and his face very near the surface. He was able to clear the snow from his face, and at that point could breathe freely. He then began slowly moving snow away from his face and head and trying to free his right arm from the snow. The survivor continued to yell for help, but to no avail, as there was no one left unburied to hear him and no other people in the area. The survivor was stranded in this position for approximately 4 hours before rescuers arrived at the scene." - Colorado Avalanche Information Center
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Colorado
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Archuleta
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June 05, 2013
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Wildfire
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"The West Fork Fire Complex (110,405 acres) resulted after three lightning-sparked fires connected with one another in the Weminuche Wilderness area northeast of Pagosa Springs in southwestern Colorado. The fire was fueled by beetle kill trees and a dry summer. Firefighters were assisted when a monsoon brought needed moisture to the area." - 9News
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Colorado
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Douglas, Elbert, El Paso
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June 11, 2013
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Wildfire
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2
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$367,633,000.00
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$293,000,000.00
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The Black Forest Fire ignited during moderate drought conditions, on a red-flag-warning day where temperatures were in the 90s F and relative humidity was below 10%. It rapidly spread through densely forested suburban neighborhoods, destroying 511 homes in all, and burning over 14,000 acres. The second most destructive wildfire in Colorado history in terms of homes lost, behind the Marshall Fire in 2021.
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Colorado
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Weld
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Evans
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September 09, 2013
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Dam Failure, Flood
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"Riverside Park Levee, Evans, Weld County, 2013: The Riverside Park levee failed in Evans during the September 2013 flooding. The floodwaters created a 70-foot gap in the levee. The flood put the sewage treatment plant out of operation, leaving residents unable to shower or flush their toilets for over a week." - CO Hazard Mitigation Plan 2018-2023
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Colorado
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Adams, Arapahoe, Bent, Boulder, Douglas, Denver, El Paso, Gilpin, Jefferson, Larimer, Logan, Pueblo, Morgan, Weld
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Loveland, Lyons, Longmont, Jamestown, Boulder, Estes Park, Morrison, Evans, Colorado Springs
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September 12, 2013
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Flood
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10
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$2,509,440,000.00
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$2,000,000,000.00
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A near-stationary weather system funneled copious subtropical moisture into the Front Range, leading to one-week rainfall totals of 10-18" over a large area. Creeks and rivers from the Wyoming border to Colorado Springs flooded, with the worst flooding on the Big Thompson River, Little Thompson River, St. Vrain Creek, Lefthand Creek, and Coal Creek. Over 20,000 homes were damaged or destroyed. Incredible and widespread damage to civil infrastructure (roads, bridges, water conveyance and treatment) on the Front Range.
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Wyoming
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Big Horn, Campbell, Converse, Crook, Johnson, Natrona, Sheridan, Washakie, Weston, Niobrara
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October 03, 2013
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Winter Storm
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3
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An intense moisture-laden storm combined with a push of unseasonably cold air from Canada to produce blizzard conditions and very heavy snowfall over eastern Wyoming, western South Dakota, and the adjacent Plains states. A chilling rain turned to snow, accompanied by 50-70 mph gusts, causing extensive livestock mortality, estimated at 60,000-100,000 head of cattle across the region. The western Black Hills in Crook County received up to 5 feet of snow.
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Colorado
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Mesa
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Collbran
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May 25, 2014
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Landslide
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3
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The longest (2.8 miles) and largest mass-movement earth failure in Colorado history occurred 3 hours after a short, intense rainstorm, and two weeks after a late spring snowstorm. The fast-moving landslide dropped 2100 feet in elevation and covered almost a square mile of the West Salt Creek valley with 38 million cubic yards of debris. Three local men, who were investigating an earlier, much smaller, landslide, died during the catastrophic event. The toe of the landslide came within 200 feet of active gas-production wellheads. The loss of irrigation ditches and water impacted local ranches and residents.
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Colorado
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Boulder, Jefferson, Denver, Arapahoe, Douglas
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September 29, 2014
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Hail
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$262,989,000.00
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$213,000,000.00
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Part of NCDC's billion-dollar disaster list. Estimated to be the eighth-most costly hailstorm in Colorado history.
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Colorado
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Boulder, Denver, Elbert, Jefferson, Larimer
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Berthoud, Simla, Longmont
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June 04, 2015
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Tornado
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"Severe thunderstorms broke out across Boulder, Denver, Elbert, Jefferson and Larimer Counties. Two large and long lived tornadoes developed in Larimer County near Berthoud and near Simla in Elbert County. The tornado that occurred along the Boulder and Larimer county line was rated an EF3 at its highest damage point, with maximum winds estimated at 135 to 140 mph. The path length was 6 miles long with a width of one quarter mile at times. In Elbert County, 17 tornadoes touched down, with EF1 damage observed southwest and southeast of Simla. Four homes suffered severe damage; two were uninhabitable. In addition, two other homes suffered moderate damage with slight damage reported to eight other residences. Large hail up to baseball size occurred in Elbert County, with hail up to tennis ball size observed in Boulder County. The hail damaged cars and homes; breaking windows and windshields. The tornado continued its track into Larimer County. At least 25 homes between Longmont and Berthoud were damaged; three of them destroyed. No injuries were reported as the winds tore apart homes and rolled vehicles." - NOAA
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Colorado
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Morgan, Washington
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June 15, 2015
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Dam Failure, Flood
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"Morgan and Washington Counties Levee Breach, 2015: On June 15, 2015, a levee breach, about 100 yards wide along the South Platte River, produced farmland flooding over northeast Morgan and northwest Washington Counties. Floodwaters, three to four feet deep, washed out the Union Pacific railroad tracks southwest of Messex. Up to ten inches of water covered several miles of track. Approximately 30 trains per day had to be diverted until the tracks could be repaired and inspected. Washington County Road 58.3 was also washed out." - CO Hazard Mitigation Plan 2018-2023
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