Updated Numbers on the Billion Dollar Disasters of 2021

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10 Jan 2022 11:28 AM

U.S. saw its 4th-warmest year on record, fueled by a record-warm December

Firefighter with axe with blazing fire in the background.
On September 4, 2021, the Joint Base Lewis-McChord Soldiers and the Bureau of Land Management-California’s Folsom Lake Veterans Hand Crew constructed a handline, cleared brush, and dealt with hot spots north of Lake Davis and Portola during the largest wildfire of 2021–California’s Dixie Fire. The western wildfires of 2021 were one of 20 separate billion-dollar disasters that struck the United States last year. (Joe Bradshaw/Bureau of Land Management)
The year 2021 was marked by extremes across the U.S., including exceptional warmth, devastating severe weather and the second-highest number of billion-dollar weather and climate disasters on record. The nation also saw an active wildfire year across the West as the north Atlantic Basin stayed busy with its third most-active Atlantic hurricane season on record, according to scientists from NOAA’s National Centers for Environmental Information. Here’s a recap of the climate and extreme weather events across the U.S. in 2021: Climate by the numbers December 2021 | Full year 2021  The December contiguous U.S. temperature was 39.3 degrees F, 6.7 degrees above average, making it the warmest December on record and exceeding the previous warmest December in 2015. Ten states — Alabama, Arkansas, Kansas, Louisiana, Mississippi, Missouri, Nebraska, New Mexico, Oklahoma and Texas — also had their warmest Decembers on record. For 2021, the average contiguous U.S. temperature was 54.5 degrees F, 2.5 degrees above the 20th-century average and ranked as the fourth-warmest year in the 127-year period of record. The six warmest years on record have all occurred since 2012. Maine and New Hampshire had their second-warmest year on record with 19 additional states across the Northeast, Great Lakes, Plains and West experiencing a top-five warmest year. Meanwhile, Alaska’s average annual temperature was 26.4 degrees F, 0.4 of a degree above the long-term average and the coldest year since 2012. Precipitation across the contiguous U.S. totaled 30.48 inches (0.54 of an inch above average), which placed 2021 in the middle third of the climate record. Massachusetts had its ninth-wettest year on record, while Montana ranked ninth driest on record for 2021. According to the U.S. Drought Monitor, drought coverage remained fairly significant and steady throughout much of 2021, with a minimum extent of 43.4% occurring on May 25 and maximum coverage of 55.5% on December 7.
A map of the United States plotted with significant climate events that occurred throughout 2021.
A map of the United States plotted with significant climate events that occurred throughout 2021. Please see the full climate report highlights at http://bit.ly/USClimate202112 offsite link(NOAA NCEI)
Billion-dollar disasters in 2021 Last year, the U.S. experienced 20 separate billion-dollar weather and climate disasters that killed at least 688 people — the most disaster-related fatalities for the contiguous U.S. since 2011 and more than double last year’s number of 262. The following 20 events, each exceeding $1 billion, put 2021 in second place for the highest number of disasters recorded in a calendar year, behind the record 22 separate billion-dollar events in 2020:
  • 1 winter storm/cold wave event (focused across the deep south and Texas).
  • 1 wildfire event (western wildfires across Arizona, California, Colorado, Idaho, Montana, Oregon and Washington).
  • 1 drought and heat wave event (summer/fall across western U.S.).
  • 2 flood events (in California and Louisiana).
  • 3 tornado outbreaks (including the December tornado outbreaks).
  • 4 tropical cyclones (Elsa, Fred, Ida and Nicholas).
  • 8 severe weather events (across many parts of the country, including the December Midwest derecho).
Damages from these disasters totaled approximately $145 billion for all 20 events. This exceeds the total damage of $102 billion from the 22 events in 2020.
Map showing the 20 separate billion dollar disasters from 2021.
Map of the U.S. plotted with 20 separate billion dollar disasters that occurred in 2021. For more, go to https://www.ncdc.noaa.gov/billions/.
Hurricane Ida was the most costly event of 2021 at $75 billion and ranks among the top-five most costly hurricanes on record (since 1980) for the U.S. The combined cost of the four tropical systems was approximately $78.5 billion, more than 54% of the total U.S. billion-dollar disaster price tag in 2021. The historic mid-February winter storm/cold wave was the costliest winter storm on record ($24 billion), more than double the previous record winter storm event — the Storm of the Century in March 1993. The total cost over the last five years of these disasters (2017-2021) exceeds $742 billion — averaging $148 billion a year. These five-year and annual average costs both set record highs. Other notable climate and weather events in 2021 The Atlantic hurricane season was busy: During 2021, 21 named storms formed in the North Atlantic Basin. This was the third most active Atlantic hurricane season on record. Category 4 Hurricane Sam was the most intense Atlantic hurricane of the season, while Category 4 Hurricane Ida was the strongest landfalling and most destructive hurricane of the season. This was the sixth year in a row with above-average tropical activity across the Atlantic Basin. Numerous wildfires scorched the West: More than 7.1 million acres were burned across the western U.S. last year, which was 96% of the 10-year average. The second-largest fire in California history, the Dixie Fire, consumed nearly 964,000 acres in 2021. Smoke from several large fires created air quality and health concerns throughout much of the season. An active tornado year: The tornado count for 2021 was above average across the contiguous U.S., with 1,376 tornadoes reported. By early January 2022, 193 tornadoes were confirmed in December alone — the greatest number of tornadoes for any December on record and nearly double the previous record of 97 in 2002. The most notable events during the year were two outbreaks on March 17 and March 25 across the South, with a combined total of about 100 tornadoes, including an EF-4 tornado, an outbreak in Iowa on July 14, the December 10-11 Mid-Mississippi River Valley Tornado event that spawned two EF-4 tornadoes and the December 15 Midwest derecho event that produced more than 60 tornadoes across Nebraska and Iowa. More: Find NOAA’s climate reports and download the images from the NCEI climate monitoring website.
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