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Annual Report on Global Extreme Climate Events -----

Major extreme climate events and weather-related disasters during this year

Extreme Climate Event

Extreme Climate Monitoring

Relevant Charts -Annual-

Highlight

  • Annual mean temperatures were above normal in the most parts of the world, and were very high in Siberia, from the eastern part of East Asia to Southeast Asia, in and around Europe, in and around Madagascar, from the southern part of North America to South America, and in Australia.
  • Extremely high temperatures were frequently observed for nine months or more in and around Siberia, from the eastern part of East Asia to Southeast Asia, from northern Europe to the central Middle East, from the southern part of North America to the central part of South America, and from northern to southeastern Australia. It was reported with frequency by several NHMSs that monthly, seasonal or annual mean temperature records averaged in each country for respective periods were broken. Extremely low temperatures were observed in and around the southern part of Central Asia.
  • Annual precipitation amounts were above normal from Western Siberia to the eastern part of East Asia, in the southern part of Southeast Asia, from the southern part of Central Asia to South Asia, from northern to western Europe, in Western Africa, from the eastern part of North America to Caribbean countries, in the eastern part of South America, and from central to southeastern Australia. Annual precipitation amounts were below normal from the southern part of Central Asia to the central part of East Asia, from the central to western part of Northern Africa, from the western USA to central Mexico, and in the southern part of South America.
  • Extremely high precipitation amounts were frequently observed for five months or more from central Mongolia to the Korean Peninsula, from western to southern Europe, and from the eastern to southeastern USA. Extremely low precipitation amounts were frequently observed for five months or more from eastern to southwestern Europe and from northern Argentina to southern Brazil.

TypePeriodAreaRemarks
1WarmJanuary-November In and around Siberia
  • The monthly mean temperature in Russia in September was the highest on record for September since 1891 (Hydrometcenter of Russia).
  • The seasonal mean temperature in Russia in winter (from December 2019 to February 2020) was the highest on record for winter since 1891 (Hydrometcenter of Russia).
  • The annual mean temperature in Russia in 2020 was the highest on record since 1891 (Hydrometcenter of Russia).
2WetFebruary, August-September, November From central Mongolia to the Korean Peninsula
3Heavy RainJuly From eastern to western Japan
  • Heavy rains in early July caused a total of 84 fatalities from eastern to western Japan (Fire and Disaster Management Agency of Japan, as of 15 September).
  • The monthly precipitation amounts in July in the Pacific side of eastern Japan, the Sea of Japan side of western Japan, and the Pacific side of western Japan were each the highest for July since 1946.
4Heavy RainJune-August China
  • It was reported that heavy rains from June to August left a total of more than 270 persons dead or missing in China (the government of China).
  • The monthly precipitation amount in China in August was the highest for August since 1961 (China Meteorological Administration).
  • The seasonal precipitation amount in China in summer (from June to August) was the second highest on record for summer since 1961 (China Meteorological Administration).
5WarmJanuary-September From the eastern part of East Asia to Southeast Asia
  • The monthly mean temperatures in Japan in January, March and June were each the highest on record for respective months since 1898.
  • The seasonal mean temperature in Japan in winter (from December 2019 to February 2020) was the highest on record for winter since 1898.
  • The annual mean temperature in Japan in 2020 was the highest on record since 1898.
  • The monthly mean temperatures in Korea in January and September were both the highest on record for respective months since 1973 (Korea Meteorological Administration).
  • The monthly mean temperatures in Hong Kong in January and July were both the highest on record for respective months since 1885 (Hong Kong Observatory).
6Heavy Rain · TyphoonOctober-November From the Philippines to the Indochina Peninsula
  • It was reported that heavy rains, four Typhoons ("SAUDEL", "MOLAVE", "GONI", and "VAMCO") and two Tropical Storms ("LINFA" and "NANGKA") caused a total of more than 340 fatalities from the Philippines to the Indochina Peninsula in October and November (the government of the Philippines, the government of Vietnam, European Commission).
7Heavy RainJune-October In and around South Asia
  • It was reported that heavy rains from June to October caused a total of more than 2700 fatalities in and around South Asia (the government of India, the government of Nepal, the government of Pakistan, EM-DAT).
8WarmJanuary-February, August, December From southern India to Sri Lanka
9ColdSeptember-December In and around the southern part of Central Asia
10WarmJanuary-March, June, August-December From northern Europe to the central Middle East
  • The seasonal mean temperature in Norway in winter (from December 2019 to February 2020) was the highest for winter since 1900 (Norwegian Meteorological Institute).
  • The annual mean temperature in Norway in 2020 was the highest on record since 1900 (Norwegian Meteorological Institute).
  • The monthly mean temperature in Denmark in January was the highest for January since 1874 (Danish Meteorological Institute).
  • The monthly mean temperature in Bahrain in September was the highest on record for September since 1902 (Bahrain Meteorological Directorate).
  • The monthly mean temperatures in Turkey in September and October were both the highest on record for respective months since 1971 (Turkish State Meteorological Service).
  • The seasonal mean temperature in Turkey in autumn (from September to November) was the highest on record for autumn since 1971 (Turkish State Meteorological Service).
11WetFebruary-March, June, August, October, December From western to southern Europe
  • The monthly precipitation amount in the UK in February was the highest for February since 1862 (UK Met Office).
12WarmFebruary, April-May, July, September, November From western Europe to the western part of Northern Africa
  • The seasonal mean temperature in France in winter (from December 2019 to February 2020) was the highest on record for winter since 1900 (Meteo France).
  • The annual mean temperature in France in 2020 was the highest on record since 1900 (Meteo France).
  • The monthly mean temperature in Spain in May was the highest on record for May since 1965 (The State Meteorological Agency, Spain).
13DryJanuary, April-May, July, November From eastern to southwestern Europe
14Heavy RainJune-September Western Yemen, Sudan, Niger
  • It was reported that heavy rains in western Yemen from June to August and those in Sudan and Niger from August to September caused a total of more than 370 fatalities (UNCHR, EM-DAT).
15WetJuly-September From the central to western part of Western Africa
16WarmJanuary-February, April-June, November-December From the western part of Western Africa to the western part of Middle Africa
17Heavy RainApril-May In and around the central part of Eastern Africa
  • It was reported that heavy rains from April to May caused a total of more than 500 fatalities in and around the central part of Eastern Africa (European Commission, EM-DAT).
18WarmFebruary-March, October In and around northern Madagascar
19WetFebruary, May-August, November From the eastern to southeastern USA
20WildfireAugust-September The western USA
  • It was reported that wildfires from August to September caused a total of more than 30 fatalities in the western USA (the government of the USA).
  • It was reported that the wildfire "August Complex" burned approx. one million acres (approx. 4180 km2), which was the largest wildfire in California since 1932 (the state government of California).
21WarmJanuary-December From the southern part of North America to the central part of South America
  • The monthly mean temperature in the northeastern USA in July was the highest on record for July since 1895 (National Oceanic and Atmospheric Administration, the USA).
  • The monthly mean temperatures in August in the western and southwestern USA were both the highest on record for August since 1895 (National Oceanic and Atmospheric Administration, the USA).
  • The monthly mean temperature in the western USA in September was the highest on record for September since 1895 (National Oceanic and Atmospheric Administration, the USA).
  • The seasonal mean temperatures in the southwestern USA in summer (from June to August) and in the western USA in autumn (from September to November) were both the highest on record for respective seasons since 1895 (National Oceanic and Atmospheric Administration, the USA).
22HurricaneAugust, November From the southern USA to Central America
  • It was reported that Hurricane "LAURA" in August, Hurricanes "ETA" and "IOTA" in November caused a total of more than 360 fatalities from the southern USA to Central America (the government of the USA, OCHA, European Commission).
23DryFebruary-March, May, September-November From northern Argentina to southern Brazil
24WarmJanuary, March-April, August In and around southeastern Micronesia
25WarmJanuary-April, June-November From northern to southeastern Australia
  • The seasonal mean temperature in Australia in spring (from September to November) was the highest on record for spring since 1910 (Bureau of Meteorology, Australia).
26WarmApril, June-July, September Western Australia

This report and figure are based on climatological normals defined as 30-year mean from 1981 through 2010.

The impacts of each disaster are based on EM-DAT and reports by United Nations organizations and each government.
EM-DAT: The Emergency Events Database - Université catholique de Louvain (UCL) - CRED, D. Guha-Sapir - www.emdat.be, Brussels, Belgium.
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