High-Impact Weather and Climate Events

High-impact events cause the majority of societal costs related to weather and climate. They provoke societal responses that can either enhance or detract from long-term adaptation to climate risk. In 2015, WWA began a new research focus on extremes that is designed to place high-impact events in the context of historical climate variability and projected climate change, assess how the risk of these events varies over time and space, and examine how high-impact events interact with place-based vulnerability.

The first activities in this new research theme have been to build a database of 160+ historical high-impact weather and climate events in the three-state region, and to generate a complementary set of regional event maps showing how risk varies seasonally across the region for different types of weather and climate events.

All CPI-Adjusted Damage costs are 2022 values, calculated from: https://www.usinflationcalculator.com/. CPI-Adjusted Damage costs are unavailable before the year 1913.

Note: The High-Impact Events Database is currently being updated with more features. Stay tuned.

Filter between two years
State County City Date Event Type Deaths CPI Adjusted Unadjusted Summary Links
Utah Box Elder February 08, 2017 Dam Failure, Flood
Wyoming Teton, Park, Fremont, Sublette, Natrona Jackson, Wilson, Cody, Teton Village, Lander, Casper February 06, 2017 Winter Storm, High Wind
Colorado, Utah La Plata, Garfield, Routt, Mesa, Grand January 09, 2017 Winter Storm
Wyoming Sublette, Fremont, Lincoln, Teton Big Piney, Pinedale, Daniel, Lander October 16, 2016 Winter Storm, High Wind
Colorado El Paso Colorado Springs July 28, 2016 Hail $429,663,000.00 $352,800,000.00
Colorado Denver, Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Jefferson, Larimer, Weld March 23, 2016 Winter Storm, High Wind
Utah Washington Hildale September 14, 2015 Flood 21 $1,541,540.00 $1,250,000.00
Colorado Morgan, Washington June 15, 2015 Dam Failure, Flood
Colorado Boulder, Denver, Elbert, Jefferson, Larimer Berthoud, Simla, Longmont June 04, 2015 Tornado
Colorado Boulder, Jefferson, Denver, Arapahoe, Douglas September 29, 2014 Hail $262,989,000.00 $213,000,000.00
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