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
Colorado La Plata October 06, 2006 Dam Failure, Flood
Wyoming Crook Carlile July 14, 2006 Wildfire
Wyoming Natrona July 14, 2006 Wildfire
Utah Wayne Hanksville January 01, 2006 Flood
Wyoming Campbell Wright August 12, 2005 Tornado 2
Utah Kane, Washington January 08, 2005 Flood 1 $336,747,000.00 $225,000,000.00
Wyoming Park July 18, 2004 Landslide
Utah Statewide December 25, 2003 Winter Storm, Avalanche 3 $2,382,850.00 $1,500,000.00
Wyoming Campbell, Crook Gillette June 21, 2003 Hail $27,005,600.00 $17,000,000.00
Colorado Fort Collins, Boulder March 17, 2003 Winter Storm $147,737,000.00 $93,000,000.00
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