Highlights of Global Disastrous Weather Report in October 2022

Source: China Meteorological New Press Date: 2022/11/29

The Global Disastrous Weather Report in October 2022 (hereafter referred to as the Report) was released on November 14. According to the Report,in October 2022, the temperature in most parts of the Northern Hemisphere was higher than that in the same period of normal years. And many parts of Europe have experienced record-breaking daily maximum temperature in October. The temperature in parts of East Asia, North America and other regions was also higherthan that in the same period of normal years,accompanied by less precipitation.

Besides, the meteorological drought in southern China continued and developed, and the accumulated precipitation in northern and western parts of the United States reached the third lowest in history. In addition, during the first half of October, frequent high-temperature heat wave occured in places from North Africa, West Asia to South Asia. Bangladesh, Nepal, Thailand and other places were in the grip of continuous heavy rainfall, and the super long rainy season in Nigeria, Africa, has given rise to grave geological hazards. In October, the number of typhoon generation was less, but with stronger intensity, resulting in serious economic losses in the Philippines, Vietnam, Myanmar, Mexico and other places.

Overview of global weather

In October 2022, the temperature in most parts of the middle and high latitudes of the Northern Hemisphere was higher. Persistent high temperature weather occurred in North Africa, West Asia, northern India and western North America. The average temperature of the above areas was 2-4℃higher than that in the same period of normal year, and in some parts of North America the average temperature increase was about 6℃. Some meteorological stations have registered the historical extremes of maximum temperature.

Global average temperature anomaly in October, 2022（unit:℃）

Influenced by both the subtropical high and monsoon systems, regions from India to Indochina Peninsula experienced continuous heavy rainfall, and the accumulated rainfall was 1~2 times more than that in the same period of normal years. Nigeria, Indonesia and other places near the equator areas have been subjected to numerous heavy rainfall processes, and the accumulated rainfall was 50% to 80% more than that in the same period of normal years. The total precipitation in Eastern Australia, Central Africa, Argentina and other places are 2-4 times more than usual.

Monthly total accumulated precipitation percentage anomaly in October 2022（unit: %）

Overview of global severe weather in October

Heat wave continued in North Africa and West Asia and record-shattering drought gripped Brazil

Heat wave continued in parts of Africa, West Asia, India and northern Australia.The high-temperature and less-rainfall weather occurred in southern China, Thailand and Laos , and the meteorological drought in those areas continued to develop. It is reported that, 34 cities in Brazil announced that they were on drought alert.

Many countries at low latitudes were exposed to heavy rainfall

On October 14, flooding raged in parts of Victoria of Australia. On October 12, 23 cities in the west and southwest of Parana State in Brazil suffered from rainstorm and flooding disasters. Nigeria, a country near the equator, has witnessed many rare extreme rainfall processes, with the flood level reaching 13.22 meters. The tropical storm Nalgaeplagued the Philippines, triggering flooding and landslides.Due to Nalgae, the accumulated precipitation of more than 200 mm occurred in most parts of the Philippines from October 26 to 30, with the total precipitation in some parts of the central and southern Philippines exceeding 400 mm (with the maximum precipitation reaching 444.7 mm).