Colorado
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Boulder, Broomfield, Adams, Weld, Morgan
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Boulder, Louisville, Lafayette, Broomfield, Northglenn, Brighton, Fort Morgan
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June 18, 2018
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Hail
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$2,400,000,000.00
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"On the evening of June 18th, a severe storm in northern Colorado produced baseball-sized hail and powerful winds. The storm damaged cars and homes in the Boulder area, before moving northeast toward Fort Morgan, where 70 mph winds and baseball-sized hail wreaked havoc in Morgan County. Storm reports included heavy rain in many parts of Colorado, with funnel clouds and tornadoes in the Eastern Plains." - NOAA NCEI
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Colorado
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Kit Carson
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Bethune
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August 13, 2019
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Hail
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Record size hail for Colorado.
"Severe thunderstorms formed across eastern Colorado the afternoon of August 13, 2019. Several grew in strength and became supercells and by 2 PM several supercells began to interact with one another in northwestern Kit Carson County. At around 3 PM, the strongest of the storms generated hail to about 5" in diameter that fell on a farm northwest of the town of Bethune. This ended up being the largest hailstone officially analyzed and recorded in the state of Colorado. Amazingly, just two days prior and about 60 miles northwest of the record breaking hail, another supercell dropped grapefruit size hail with reports up of 5" diameter, but no hailstones were officially measured nor saved for later analysis from that event. The record breaking hailstorm occurred just outside NWS Boulder's area of responsibility, in western Kit Carson County, CO. NWS Goodland has a great write up of the hailstone, hail damage, and subsequent certification of the largest stone officially measured and validated in the state of Colorado, at 4.83" diameter. Please visit the NWS Goodland page for those details. https://www.weather.gov/gld/8132019CORecordHailstone" - National Weather Service
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Colorado
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El Paso
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Colorado Springs, Fountain
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June 13, 2018
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Hail
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$196,721,000.00
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$169,000,000.00
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"A rare nocturnal severe thunderstorm developed over southern El Paso County during the early morning hours of June 13th, 2018. The severe thunderstorm dropped 3.0" hail over the southern Colorado Springs metropolitan area and Fountain. The estimated damage caused by this event was around $169 million dollars. Follow this link for an in-depth meteorological analysis and for more images: https://www.weather.gov/pub/20180613_ElPaso_Hail" - National Weather Service
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Colorado
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Teller, El Paso
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Colorado Springs
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August 06, 2018
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Hail
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$201,377,000.00
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$173,000,000.00
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"A very strong severe thunderstorm develop over Teller County during the afternoon of August 6th, 2018, then traveled southeast over the Highway 24 corridor, reaching the Cheyenne Mountain Zoo. The severe thunderstorm dropped 3 - 4" hailstones over the Cheyenne Mountain Zoo and southern Colorado Springs. The estimated damage caused by this event was $173 million. A good overview of the injuries at Cheyenne Mountain Zoo can be found here. Follow this link for a meteorological write-up of the event: https://www.weather.gov/pub/20180806_ElPasoHail" - National Weather Service
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Colorado, Wyoming
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December 15, 2021
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High Wind
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A severe storm with hurricane-force gusts affected Colorado and Wyoming over the course of a few days. This storm also brought the first tornado ever reported in Minnesota during the month of December, according to NOAA data.
CO: "The National Weather Service office in Pueblo recorded a 107 mph wind gust in Lamar shortly before 9 a.m." - CBS Denver
WY: "A National Weather Service peak wind report released Sunday morning showed a 118 mph gust blasted Clark, a small community in the northern part of the state, north of Cody." - Deseret News
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Colorado, Utah, Wyoming
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June 06, 2020
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High Wind
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"A powerful upper-level disturbance moving through the Rockies and Plains on June 6, 2020 sparked the development of a line of thunderstorms that brought widespread damaging winds from Utah and Colorado through northeastern Wyoming, western South Dakota, and southwestern North Dakota. Given the scope and intensity of the damaging winds, the storm system was classified as a "derecho" by the Storm Prediction Center.
Derechos are characterized by a several hundred mile-long swath of persistent severe wind gusts (58 mph or greater), with embedded wind gusts that are considered significantly severe (75 mph or greater). There is more information about derechos here." - National Weather Service
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Colorado
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Garfield
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Glenwood Springs
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July 29, 2021
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Landslide
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"Torrential rain fell and the charred land stripped of vegetation gave way, sending a rush of mud and boulders tumbling down steep canyon walls and onto highway I-70 near Glenwood Springs. Mudslides have become more frequent and intense since the Grizzly Creek Fire scorched about 50 square miles (130 square kilometers) in the summer of 2020." - PBS News Hour
CBS Images
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Utah
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Salt Lake
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April 10, 2013
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Landslide
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"On the evening of 10 April 2013 (MDT) a massive landslide occurred at the Bingham Canyon copper mine near Salt Lake City, Utah, USA. The northeastern wall of the 970-m-deep pit collapsed in two distinct episodes that were each sudden, lasting ~90 seconds, but separated in time by ~1.5 hours. In total, ~65 million cubic meters of material was deposited, making the cumulative event likely the largest non-volcanic landslide to have occurred in North America in modern times. Fortunately, there were no fatalities or injuries." - GSA Today
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Colorado
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Baca
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May 18, 1977
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Tornado
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"This day holds a special and terrifying place in Colorado weather history. Colorado typically sees one EF-4 or EF-3 tornado every three years. But on May 18th, 1977, the ominous, dark skies southeastern Colorado unleashed three of the state’s most powerful twisters on record on a single day. Each tornado ranked as an F-4 (the official tornado measurement scale changed in 2007). Tornadoes ranked at EF-3 and higher pose the greatest risk to lives and property, and the Denver Post points out that while twisters this large are quite rare, they are known to account for two-thirds of all tornado-related deaths." - Uncover Colorado
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Colorado
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Lincoln
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Genoa
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May 31, 1999
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Tornado
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$7,017,910.00
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$4,000,000.00
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"Two tornadoes touched down causing extensive damage north of Genoa. The first tornado, an F2, caused minor damage to a home, but substantial damage to trees in the area. The second tornado, an F3, destroyed 2 mobile homes and several grain bins. It also caused moderate damage to 2 framed houses. At one farm, several dogs that were boarded in kennels were killed. Several trees and dozens of power poles were also snapped, and a pickup truck was tossed over a quonset hut. Damage was estimated to be $3-4 million." - NOAA
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