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Korea has historically suffered several floods due to heavy rains, typhoons, and heavy snowfalls. Most of the flood damage was caused by storms and tsunamis caused by typhoons, and floods.
The 1991 Pacific typhoon season was a slightly above-average season with 29 tropical storms, 17 typhoons and five super typhoons forming. It was quite a catastrophic season – Typhoon Yunya impacted the Philippines in mid June while in the same time experiencing a volcanic eruption, Typhoon Mireille severely impacting Japan, which became known for being the costliest typhoon on record with US$10 billion worths of damages, and Tropical Storm Thelma on November which became one of the deadliest storms to strike the Philippines, killing at least over 5,000 people.
The 1990 Pacific typhoon season was another active season. It has no official bounds; it ran year-round in 1990, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
Typhoon Rusa was the most powerful typhoon to strike South Korea in 43 years. It was the 21st JTWC tropical depression, the 15th named storm, and the 10th typhoon of the 2002 Pacific typhoon season. It developed on August 22 from the monsoon trough in the northwestern Pacific Ocean, well to the southeast of Japan. For several days, Rusa moved to the northwest, eventually intensifying into a powerful typhoon. On August 26, the storm moved across the Amami Islands of Japan, where Rusa left 20,000 people without power and caused two fatalities. Across Japan, the typhoon dropped torrential rainfall peaking at 902 mm (35.5 in) in Tokushima Prefecture.
Typhoon Chataan, known in the Philippines as Typhoon Gloria, was the deadliest natural disaster in the history of Chuuk, a state in the Federated States of Micronesia (FSM). The typhoon formed on June 28, 2002, near the FSM, and for several days it meandered while producing heavy rainfall across the region. On Chuuk, the highest 24-hour precipitation total was 506 mm (19.9 in), which was greater than the average monthly total. The rain produced floods up to 1.5 m (4.9 ft) deep, causing landslides across the island that killed 47 people. There was also one death on nearby Pohnpei, and damage in the FSM totaled over $100 million.
Severe Tropical Storm Bilis, known in the Philippines as Tropical Storm Florita, was a weak tropical cyclone in July 2006 that caused catastrophic damage to areas of the Philippines, Taiwan, and southeastern China. The word Bilis, submitted by the Philippines, means 'speed' or 'swiftness' in Tagalog.
Typhoon Ewiniar, known in the Philippines as Typhoon Ester, was the third named storm of the 2006 Pacific typhoon season and one that lasted for twelve days as a tropical cyclone, moving on a generally northward track. During its lifespan, it affected Palau, Yap, eastern China, the Ryūkyū Islands of Japan, South Korea as well as North Korea, briefly threatening to make landfall in North Korea before doing so in South Korea. Ewiniar is responsible for at least 181 deaths. However, an unofficial report stated that up to 10,000 people had been killed by flooding in North Korea, with 4,000 people missing.
The effects of the 2009 Pacific typhoon season in the Philippines were considered some of the worst in decades. Throughout the year, series of typhoons impacted the country, with the worst damage occurring during September and October from Typhoons Ketsana (Ondoy) and Parma (Pepeng).
The 2010 China floods began in early May 2010. Three hundred and ninety-two people died, and a further 232 people were reported missing as of June 30, 2010, including 57 people in a landslide in Guizhou. Fifty-three of the deaths occurred from the flooding and landslides between May 31 and June 3, and 266 deaths occurred between June 13 and June 29. Four hundred and twenty four people were killed by the end of June, including 42 from the Guizhou landslide; 277 more were killed and 147 were missing in the first two weeks of July, bringing the death toll as of August 5 to 1,072. A landslide in early August in Gansu killed at least 1,471 people and left 294 missing. In total, the flooding and landslides killed at least 3,185 people in China by August 31. More than 230 million people in 28 provinces, municipalities, and regions, especially the southern and central provinces and regions of Zhejiang, Fujian, Jiangxi, Hubei, Hunan, Guangdong, Guangxi, Chongqing Municipality, Gansu, Sichuan, and Guizhou, and the northeastern province of Jilin were affected, while at least 4.66 million people were evacuated because of the risk of flooding and landslides in the latter half of June. By early August, over 12 million people were evacuated, and that number rose to 15.2 million by August 31.
Typhoon Alex, known in the Philippines as Typhoon Etang, affected the Taiwan, China, and South Korea during July 1987. Typhoon Alex developed from the monsoon trough that spawned a tropical disturbance late on July 21 southwest of Guam which organized into a tropical depression shortly thereafter. The system steadily became better organized, and the next day, a tropical depression had developed. Satellite intensity estimates gradually increased, and on July 23, the depression intensified into Tropical Storm Alex. After initially tracking west-northwest, Tropical Storm Alex started tracking northwest. An eye developed on July 24, and on the next day, Alex was classified as a typhoon, when Alex attained its peak intensity of 120 km/h (75 mph) and a minimum barometric pressure of 970 mbar (29 inHg). Alex weakened while tracking more northward, though interaction with Taiwan resulted in a more westward track starting on July 27. The storm struck near Shanghai as a tropical storm, and weakened over land, although it remained identifiable through August 2.
Typhoon Thelma, known in the Philippines as Typhoon Katring, was the first super typhoon to form in the 1987 Pacific typhoon season. Forming from the monsoon trough in the Philippine Sea, Thelma was first designated as a tropical cyclone on July 7. After moving north, Thelma turned west, while remaining poorly organized. It finally attained typhoon status on July 9, soon after developing an eye, and began to intensify at a brisker clip. During the evening of July 10, Thelma attained maximum intensity while well to the east of the northern Philippines. It also turned sharply northward in response to a trough, slowly weakening. On July 15, Typhoon Thelma, now greatly reduced in intensity, struck the south coast of South Korea. The next day, Thelma rapidly dissipated, shortly after emerging into the Sea of Japan.
Typhoon Judy of July 1989 was a strong tropical cyclone that caused extensive damage and loss of life in Japan, South Korea and the eastern Soviet Union. Originating from a monsoon trough on July 21, Judy began as a tropical depression west of the Northern Mariana Islands. Tracking west-northwest, the system gradually intensified into a tropical storm and was given the name Judy on July 23. By this time, the storm had turned due north. Two days later, Judy attained typhoon status as it began a gradual turn to the west-northwest. Late on July 25, the storm peaked with winds of 165 km/h (105 mph). Striking Kyushu on July 27, interaction with the island's mountainous terrain caused Judy to quickly weaken as it neared South Korea. The weakened storm struck the country west of Pusan the following day before losing its identity near the border with North Korea. The remnants of Judy were last noted over the Sea of Japan.
The 2012 North Korean floods began in mid-July 2012 when Tropical Storm Khanun affected parts of the country, killing at least 88 people and leaving more than 62,000 people homeless. Torrential rains on 29 and 30 July 2012 worsened the situation, causing additional damage and casualties and forcing the government to request international assistance. Severe rainfall also affected the southern region of North Korea in August, killing at least six.
Between June and August 2020, floods severely impacted large areas of both North and South Korea due to heavy rains of the regional rainy season, primarily in the far southern parts of the Korean Peninsula. These floods are closely related to ones across China and in Kyushu, Japan. As of 9 August 2020, 30 people have died in South Korea as a result.
The Korean Peninsula is a peninsula region located over Eastern Asia. The region is divided into North Korea and South Korea.
Several floods struck China starting in June 2021, most of them caused by heavy rainfalls in different areas. According to the World Meteorological Organization, such heavy rains are frequently a result of climate change. The most notable floods were the 2021 Henan floods, which left 398 dead or missing.
From January to October 2022, excessive rainfall and widespread monsoon flooding occurred in the South Asian countries of Afghanistan, Bangladesh, India, Nepal, Pakistan, and Sri Lanka. It has become the region's deadliest floods since 2020, with over 3,700 people dead.
After over 6,500 people died in flooding in 2020, monsoon floods hit South Asia again in 2021.
The following is a list of weather events that occurred on Earth in the year 2023. The year saw a transition from La Niña to El Niño, with record high global average surface temperatures. The several weather events which had a significant impact were blizzards, cold waves, droughts, heat waves, wildfires, floods, tornadoes, and tropical cyclones.
Heavy rainfall during the 2023 East Asian rainy season resulted in severe flooding and landslides across South Korea, primarily affecting residents in the provinces of North Chungcheong and North Gyeongsang. At least 47 people were killed and three are still missing as of 22 July 2023. The downpour is the heaviest in South Korea in 115 years and marked the third heaviest rainfall on record in South Korea.