California Summary

From 1980–2024 (as of November 1, 2024), there have been 46 confirmed weather/climate disaster events with losses exceeding $1 billion each to affect California. These events included 14 drought events, 6 flooding events, 3 freeze events, 4 severe storm events, and 19 wildfire events. The 1980–2023 annual average is 1.0 event (CPI-adjusted); the annual average for the most recent 5 years (2019–2023) is 1.8 events (CPI-adjusted).

Billion-dollar events to affect California from 1980 to 2024* (CPI-AUnadjusted)
Disaster TypeEventsEvents/​YearPercent FrequencyTotal CostsPercent of Total Costs
Drought140.330.4%$10.0B-$20.0B10.7%
Flooding60.113.0%$10.0B-$20.0B12.4%
Freeze30.16.5%$10.0B-$20.0B10.0%
Severe Storm40.18.7%$2.0B-$5.0B2.3%
Tropical Cyclone----------
Wildfire190.441.3%$50.0B-$100.0B64.6%
Winter Storm----------
All Disasters461.0100.0%$100.0B-$200.0B100.0%
Drought140.332.6%$10.0B-$20.0B11.9%
Flooding60.114.0%$10.0B-$20.0B11.3%
Freeze30.17.0%$5.0B-$10.0B6.8%
Severe Storm30.17.0%$1.0B-$2.0B1.3%
Tropical Cyclone----------
Wildfire170.439.5%$50.0B-$100.0B68.7%
Winter Storm----------
All Disasters431.0100.0%$100.0B-$200.0B100.0%
Select Time Period Comparisons of California Billion-Dollar Drought, Flooding, Freeze, Severe Storm, Tropical Cyclone, Wildfire, and Winter Storm Statistics (CPI-AUnadjusted)
Time PeriodBillion-Dollar DisastersEvents/YearCostPercent of Total Cost
1980s (1980-1989)20.2$2.0B-$5.0B2.4%
1990s (1990-1999)90.9$20.0B-$50.0B22.8%
2000s (2000-2009)131.3$10.0B-$20.0B8.6%
2010s (2010-2019)141.4$50.0B-$100.0B45.4%
Last 5 Years (2019-2023)91.8$20.0B-$50.0B24.2%
Last 3 Years (2021-2023)62.0$10.0B-$20.0B11.3%
Last Year (2023)11.0$2.0B-$5.0B3.1%
All Years (1980-2024)*461.0$100.0B-$200.0B100.0%
1980s (1980-1989)10.1$500M-$1.0B0.7%
1990s (1990-1999)70.7$10.0B-$20.0B14.4%
2000s (2000-2009)131.3$5.0B-$10.0B7.8%
2010s (2010-2019)141.4$50.0B-$100.0B51.2%
Last 5 Years (2019-2023)91.8$20.0B-$50.0B29.8%
Last 3 Years (2021-2023)62.0$10.0B-$20.0B14.5%
Last Year (2023)11.0$2.0B-$5.0B4.2%
All Years (1980-2024)*431.0$100.0B-$200.0B100.0%
Billion-Dollar Events to affect California
Event Type Begin
Date
End
Date
Summary CPI-AUnadjusted
Estimated
Cost
(in Billions)
Deaths
California Flooding
December 2022 - March 2023
FloodingDecember 26, 2022March 19, 2023Numerous atmospheric rivers in continuous succession caused severe flooding, record snowfall and copious rainfall that significantly reduced drought deficits across California, between late-December and March 2023. Flooding impacted many homes, businesses, levees, agriculture and other infrastructure particularly across central California.$4.7 CI22
California Flooding and Severe Weather
January 2021
FloodingJanuary 24, 2021January 29, 2021California was impacted by an atmospheric river in late-January, in which more than 7 inches of rain fell from southern California to the central California coast. Rainfall totals exceeded 15 inches in Monterey and San Luis Obispo counties. These heavy rains caused flooding and mudslides in some of the same areas burned by wildfires in late-2020. This combination caused dozens of slides and debris flows damaging homes, vehicles and businesses and infrastructure. Highway 1 south of Big Sur was washed out while the Sierra Nevada range received several feet of snow, closing major highways. In addition to significant rain and snow, high winds also caused extensive power outages across parts the region.$1.3 CI2
California and Alaska Wildfires
Summer-Fall 2019
WildfireJune 1, 2019November 30, 2019California experienced a damaging wildfire season in 2019, largely resulting from the Kincade and Saddle Ridge wildfires. In addition, a key California electrical utility provider turned off power to millions of homes and businesses several times during days with forecasted high winds and extremely dry conditions. This step was designed to minimize wildfires, with some success, but it also caused billions of dollars in losses to those affected. Alaska also suffered a near-historic wildfire season with more than 2.5 million acres burned. These wildfire conditions were primed due to Alaska's record-breaking heat and dry conditions during the summer months. July 2019 was the warmest month ever recorded in Alaska.$5.5 CI3
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
California Flooding
February 2017
FloodingFebruary 8, 2017February 22, 2017Heavy, persistent rainfall across northern and central California created substantial property and infrastructure damage from flooding, landslides and erosion. Notable impacts include severe damage to the Oroville Dam spillway, which caused a multi-day evacuation of 188,000 residents downstream. Excessive rainfall also caused flood damage in the city of San Jose, as Coyote Creek overflowed its banks and inundated neighborhoods forcing 14,000 residents to evacuate.$2.0 CI5
Southern Tornado Outbreak and Western Storms
January 2017
Severe StormJanuary 20, 2017January 22, 2017High wind damage occurred across southern California near San Diego followed by 79 confirmed tornadoes during an outbreak across many southern states including AL, FL, GA, LA, MS, SC and TX. This was the 3rd most tornadoes to occur in a single outbreak of extreme weather during a winter month (Dec.-Feb.) based on records from 1950.$1.4 CI24
West/Northeast/Southeast Drought
2016
DroughtJanuary 1, 2016December 31, 2016California's 5-year drought persisted during 2016 while new areas of extreme drought developed in states across the Northeast and Southeast. The long-term impacts of the drought in California have damaged forests where 100+ million trees have perished and are a public safety hazard. The agricultural impacts were reduced in California as water prices and crop fallowing declined. However, agricultural impacts developed in Northeast and Southeast due to stressed water supplies.$4.6 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
Western Wildfires
Summer-Fall 2009
WildfireJune 1, 2009November 30, 2009Residual and sustained drought conditions across western and south-central states resulted in thousands of wildfires. Most affected states include CA, AZ, NM, TX, OK, and UT. National wildfire acreage burned exceeds 5.9 million acres. Over 200 homes and structures destroyed in the California "Station" fire alone.$1.5 CI10
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
California Freeze
January 2007
FreezeJanuary 11, 2007January 17, 2007Widespread agricultural freeze -- for nearly two weeks in January, overnight temperatures over a good portion of California dipped into the 20s, destroying numerous agricultural crops; with citrus, berry, and vegetable crops most affected.$2.2 CI1
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
California Freeze
December 1998
FreezeDecember 20, 1998December 28, 1998A severe freeze damaged fruit and vegetable crops in the Central and Southern San Joaquin Valley. Extended intervals of sub 27° F temperatures occurred over an 8-day period.$4.9 CI0
Western/Eastern Severe Weather and Flooding
Winter-Spring 1998
Severe StormDecember 1, 1997February 28, 1998Tornadoes and flooding cause damage across the West and Southeast. The states impacted include CA, TX, FL, AL, GA, LA, MS, NC and SC.$2.0 CI132
California Flooding
January-March 1995
FloodingJanuary 1, 1995March 31, 1995Frequent winter storms cause 20-70 inch rainfall and periodic flooding across much of California$5.2 CI27
California Wildfires
Fall 1993
WildfireSeptember 1, 1993November 30, 1993Dry weather, high winds and wildfires in Southern California$3.0 CI4
Oakland Firestorm
October 1991
WildfireOctober 1, 1991October 31, 1991Oakland, California firestorm due to low humidity and high winds burned over 3,000 homes. This was the costliest urban wildfire to affect the United States since 1980 when it occurred.$7.6 CI25
California Freeze
December 1990
FreezeDecember 18, 1990December 25, 1990Severe freeze in the Central and Southern San Joaquin Valley caused the loss of citrus, avocado trees, and other crops in many areas. Several days of subfreezing temperatures occurred, with some valley locations in the teens.$8.4 CI0
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

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.

*Statistics valid as of November 1, 2024

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