Northwest Climate Region Summary

From 1980-2024, there were 45 confirmed weather/climate disaster events with losses exceeding $1 billion each to affect Northwest Climate Region. These events included 19 drought events, 3 flooding events, 1 freeze event, 2 severe storm events, 17 wildfire events, and 3 winter storm events. The 1980โ€“2024 annual average is 1.0 event (CPI-adjusted); the annual average for the most recent 5 years (2020โ€“2024) is 2.2 events (CPI-adjusted).

Billion-dollar events to affect the Northwest Climate Region (ID, OR, WA) from 1980 to 2024 (CPI-Adjusted)
Disaster TypeEventsEvents/โ€‹YearPercent FrequencyTotal CostsPercent of Total CostsCost/โ€‹EventCost/โ€‹Year
Drought190.442.2%$13.0B40.7%$0.7B$0.3B
Flooding30.16.7%$3.3B10.5%$1.1B$0.1B
Freeze10.02.2%$0.3B0.8%$0.3B$0.0B
Severe Storm20.04.4%$0.2B0.6%$0.1B$0.0B
Tropical Cyclone--------------
Wildfire170.437.8%$12.5B39.3%$0.7B$0.3B
Winter Storm30.16.7%$2.6B8.0%$0.9B$0.1B
All Disasters451.0100.0%$31.8B100.0%$0.7B$0.7B
Select Time Period Comparisons of Northwest Climate Region (ID, OR, WA) Billion-Dollar Drought, Flooding, Freeze, Severe Storm, Tropical Cyclone, Wildfire, and Winter Storm Statistics (CPI-Adjusted)
Time PeriodBillion-Dollar DisastersEvents/YearCostPercent of Total CostCost/Year
1980s (1980-1989)40.4$2.0B6.3%$199.6M
1990s (1990-1999)50.5$4.5B14.0%$446.1M
2000s (2000-2009)141.4$7.2B22.7%$721.9M
2010s (2010-2019)111.1$6.6B20.8%$663.0M
Last 5 Years (2020-2024)112.2$11.5B36.2%$2.3B
Last 3 Years (2022-2024)62.0$4.5B14.2%$1.5B
Last Year (2024)22.0$2.0B6.3%$2.0B
All Years (1980-2024)451.0$31.8B100.0%$706.8M
Billion-Dollar Events to affect Northwest Climate Region
Event Type Begin
Date
End
Date
Summary CPI-Adjusted
Estimated
Cost
(in Billions)
Deaths
Southwest/Southern Plains Drought
Summer-Fall 2018
DroughtJune 1, 2018December 30, 2018Drought conditions were present across numerous Southwestern and Plains states (TX, OK, KS, MO, CO, NM, AZ, UT). The most extreme drought conditions continue to persist across the Four Corners region of the Southwest. The agriculture sector has been impacted across the affected states including damage to field crops from lack of rainfall. Ranchers have also be forced to sell-off livestock early in some regions due to high feeding costs.$3.8 CI0
U.S. Drought/Heat Wave
2012
DroughtJanuary 1, 2012December 31, 2012The 2012 drought is the most extensive drought to affect the U.S. since the 1930s. Moderate to extreme drought conditions affected more than half the country for a majority of 2012. The following states were affected: CA, NV, ID, MT, WY, UT, CO, AZ, NM, TX, ND, SD, NE, KS, OK, AR, MO, IA, MN, IL, IN, GA. Costly drought impacts occurred across the central agriculture states resulting in widespread harvest failure for corn, sorghum and soybean crops, among others. The associated summer heat wave also caused 123 direct deaths, but an estimate of the excess mortality due to heat stress is still unknown.$41.7 CI123
Texas, New Mexico, Arizona Wildfires
Summer-Fall 2011
WildfireJune 1, 2011November 30, 2011Continued drought conditions and periods of extreme heat provided conditions favorable for a series of historic wildfires across Texas, New Mexico and Arizona. The Bastrop Fire in Texas was the most destructive fire in Texas history destroying over 1,500 homes. The Wallow Fire consumed over 500,000 acres in Arizona making it the largest on record in Arizona. The Las Conchas Fire in New Mexico was also the state's largest wildfire on record scorching over 150,000 acres while threatening the Los Alamos National Laboratory. Over 3 million acres have burned across Texas this wildfire season.$2.5 CI5
Western/Eastern Drought/Heat Wave
Summer-Fall 2007
DroughtJune 1, 2007November 30, 2007Severe drought with periods of extreme heat over most of the southeast and portions of the Great Plains, Ohio Valley, and Great Lakes area, resulting in major reductions in crop yields, along with very low stream-flows and lake levels. Includes states of ND, SD, NE, KS, OK, TX, MN, WI, IA, MO, AR, LA, MS, AL, GA, NC, SC, FL, TN, VA, WV, KY, IN, IL, OH, MI, PA, NY.$5.5 CI15
Western Fire Season
Fall 2002
WildfireSeptember 1, 2002November 30, 2002Major wildfires over 11 western states from the Rockies to the west coast due to drought and periodic high winds, with over 7.1 million acres burned.$2.3 CI21
U.S. Drought
Spring-Fall 2002
DroughtMarch 1, 2002November 30, 2002Moderate to extreme drought over large portions of more than 30 states, including the western states, the Great Plains, and much of the eastern U.S.$16.0 CI0
Western/Central/Southeast Drought/Heat Wave
Spring-Fall 2000
DroughtMarch 1, 2000November 30, 2000Western/Central/Southeast Drought/Heat Wave. The states impacted include AZ, AL, AR, CA, CO, FL, GA, IA, KS, LA, MS, MT, NE, NM, OK, OR, SC, TN, and TX.$9.3 CI140
U.S. Drought/Heat Wave
Summer 1988
DroughtJune 1, 1988August 31, 19881988 drought across a large portion of the U.S. with very severe losses to agriculture and related industries. Combined direct and indirect deaths (i.e., excess mortality) due to heat stress estimated at 5,000.$54.6 CI454
Western Severe Storms and Flooding
February 1986
Severe StormFebruary 14, 1986February 16, 1986Severe storms and flooding affect the states CA, CO, NV, OR, WY across the West.$1.5* CI13

โ€ Deaths associated with drought are the result of heat waves. (Not all droughts are accompanied by extreme heat waves.)

Flooding events (river basin or urban flooding from excessive rainfall) are separate from inland flood damage caused by tropical cyclone events.

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