US weather-related disasters account for half of natural disaster losses globally

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US weather-related disasters have been identified as the dominant natural disaster losses in 2021, according to the latest figures from German insurance giant Munich Re.

Globally, financial losses incurred by natural disasters – such as storms, floods, wildfires and earthquakes – amounted to US$280bn, up from US$210bn in 2020 and US$166bn in 2019. Of this total, US$265bn is attributed to weather-related events with US$15bn for geophysical events.

“The images of natural disasters in 2021 are disturbing,” said Torsten Jeworrek, member of the board of management at Munich Re. “Climate research increasingly confirms that extreme weather has become more likely. Societies need to urgently adapt to increasing weather risks and make climate protection a priority. Insurers meet their responsibilities by covering a portion of the risks and losses. By applying risk-adequate premiums, they put a price on natural hazards, thereby encouraging carefully considered behavior to limit the losses. At the same time, severe volcanic eruptions and earthquakes in 2021 showed that we should not overlook these categories of natural disasters either.”

Roughly US$120bn of global losses were insured, which was also more than in the two previous years (2020: US$82bn, 2019: US$57bn). The insurance gap declined slightly due to a higher proportion of losses in the USA but was still approximately 57%.

Almost 10,000 people lost their lives in natural disasters in 2021, a death toll comparable with recent years.

The USA accounted for a high share of natural disaster losses in 2021 (US$145bn), of which some US$85bn were insured. Disasters of note include:

Tornadoes – In December 2021, a series of severe storms across several states in the central and southeastern USA led to exceptionally high losses, especially for the month of December. Dozens of violent tornadoes with wind speeds of up to 310km/h (190mph) carved a trail of devastation across six states. Especially hard hit was the town of Mayfield, Kentucky, where a long-track, massive wedge-type EF4 tornado roared through the neighborhood. Large parts of the town, including a candle factory, were completely destroyed. According to initial estimates, overall losses amount to around US$5.2bn, with projected insured losses of US$4bn. An estimated 90 people were killed.

Tropical storms: The Atlantic hurricane season – The costliest natural disaster in 2021 was Hurricane Ida, which made landfall on August 29, 90km south of New Orleans as a major hurricane (Category 4, the second-most destructive), with wind speeds of around 240km/h (150mph). Tens of thousands of buildings were damaged or destroyed. The New Orleans levee system, which was strengthened following Hurricane Katrina in 2005, withstood the storm surges, thereby preventing much higher losses.

Hurricane Ida then tracked to the northeast, causing severe flooding, in particular in New Jersey and the New York City metropolitan area. Overall, Hurricane Ida caused losses of US$65bn, of which approximately US$36bn were insured (55%). A total of 114 people lost their lives.

Hard on the heels of the previous record-setting 30 named tropical storms in 2020, storm activity during the 2021 hurricane season was again significantly above the long-term average (14.3 for the period 1991 to 2020), with 21 named tropical storms.

Deep freeze – In February, an exceptional cold wave brought icy temperatures as far as the southern USA. A temperature of -8°C (17°F) was recorded in the southern Texas city of Houston. Although the state of Texas experiences a major freeze event about once a decade, the state’s energy, infrastructure and buildings are often inadequately prepared for such conditions. Millions of people were left without electricity. Overall, with losses of US$30bn (half of which were insured), the event was the year’s third-costliest natural disaster.

In Europe, torrential rainfall in July 2021 triggered exceptionally severe floodings that caused devastating losses in local areas, particularly in western Germany. In the regions affected, the rainfall caused by the low-pressure system “Bernd” was the highest in over a hundred years. In tributaries, such as the River Ahr in the Rhineland-Palatinate, the deluge triggered flash floods that swept away countless buildings. There was also severe damage to infrastructure, such as railway lines, roads and bridges. More than 220 people were killed.

Overall losses came to €46bn (US$54bn), of which €33bn (US$40bn) was in Germany. The insured portion was relatively low because of uninsured infrastructure losses and the limited insurance density for flooding in Germany; €11bn (US$13bn) was insured, of which €8.2bn (US$9.7bn) was in Germany, according to figures provided by the Association of German Insurers. It is the costliest natural disaster in Germany and Europe to date.

Ernst Rauch, chief climate and geo scientist at Munich Re, and head of the Climate Solutions Unit, commented, “The 2021 disaster statistics are striking because some of the extreme weather events are of the kind that are likely to become more frequent or more severe as a result of climate change. Among these are severe storms in the USA, including in the winter half-year, or heavy rain followed by floods in Europe. For hurricanes, scientists anticipate that the proportion of severe storms and of storms with extreme rainfall will increase because of climate change. Even though events cannot automatically be attributed to climate change, analysis of the changes over decades provides plausible indications of a connection with the warming of the atmosphere and the oceans. Adapting to increasing risks due to climate change will be a challenge.”

In the Asia-Pacific region, losses remained modest. With overall economic losses of US$50bn, of which US$9bn were insured (insurance gap 83%), the region accounted for just 18% of overall losses and 7% of insured losses. The costliest natural disaster was a severe flood in Henan Province in central China, where countless rivers, including the Yellow River, burst their banks. Hundreds of thousands of homes were flooded. Overall losses came to some US$16.5bn, with only about 10% of these insured.

On a global level, around 57% of losses from natural catastrophes in 2021 were not insured. Those affected must bear the financial losses themselves or rely on aid. This insurance gap has declined over the last few decades in industrialized countries, whereas in poorer countries it remains unchanged at over 90%.

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, editor-in-chief

Dan first joined UKi Media & Events in 2014 having spent the early years of his career in the recruitment industry. As editor, he now produces content for Meteorological Technology International, unearthing the latest technological advances and research methods for the publication of each exciting new issue. When he’s not reporting on the latest meteorological news, Dan can be found on the golf course or apprehensively planning his next DIY project.

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