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Typhoon Chanthu (Caloy)

Typhoon Chanthu at peak intensity near landfall in Guangdong on July 22
Meteorological history
Formed	July 17, 2010
Dissipated	July 23, 2010
Typhoon
10-minute sustained (JMA)
Highest winds	130 km/h (80 mph)
Lowest pressure	970 hPa (mbar); 28.64 inHg
Category 1-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds	150 km/h (90 mph)
Lowest pressure	963 hPa (mbar); 28.44 inHg
Overall effects
Fatalities	27 total
Damage	$818 million (2010 USD)
Areas affected	Luzon, Guangdong
IBTrACS
Part of the 2010 Pacific typhoon season

Typhoon Chanthu, known in the Philippines as Tropical Storm Caloy, was a weak typhoon that impacted southeastern China in the 2010 Pacific typhoon season. The storm formed on July 17, slowly moving to the Philippines, making direct landfall in Aurora. The storm later was later named respectively as Caloy and Chanthu. The storm later made its way to China, where the storm had its peak intensity. The storm later dissipated on July 23.

As a result of the storm, there was heavy rainfall and flooding in the affected areas. In the Philippines, eight people died, with hundreds of stranded residents. In China, 9 people were killed, with a CNY 5.54 billion (US$817.7 million) loss. In Vietnam, 10 people died, with infrastructure damaged.

Meteorological history

Early on July 17, the JMA reported that a tropical depression had developed about 220 km (135 mi) to the northeast of Manila, Philippines. Later that day the JTWC reported that the depression had a small low level circulation center with deep convection flaring to the northeast of the center with an unfavorable environment. Also spotting dense fog within the Sea of Okhotsk. However, as the low-level circulation center was located close to land and was not very organized, the JTWC declared that there was a poor chance of it becoming a significant tropical cyclone within 48 hours. However, during that day, the depression rapidly consolidated with an anticyclone helping to develop the low-level circulation center. As a result, early the next day the JTWC issued a tropical cyclone formation alert on the depression, however they thought that further development might be hindered as it was located close to land. Whilst it moved along the southern edge of the subtropical ridge, the Depression made landfall in Aurora province at 0600 UTC, before the JTWC initiated advisories later that morning, as the low-level circulation center had consolidated and poleward outflow into the tropical upper tropospheric trough had improved.

As the storm moved to the Philippine Area of Responsibility, the storm was named Caloy by PAGASA. Then. on July 19, PAGASA issued their last advisory on Tropical Storm Caloy as it had moved out of their Area of Responsibility. Then, the storm was officially named Chanthu by the Regional Specialized Meteorological Centre. Later, Chanthu began to head to China, where it peaked as a Category 1 typhoon. It made landfall in China and soon dissipated hours later.

Preparations and impact

Philippines

Before the storm hit Aurora, a report was issued by the National Disaster Coordinating Council to let Local Government Units (more so those near the affected areas) to keep an eye on the storm.

In Luzon, heavy rains triggered floods that destroyed at least one house and stranded thousands of people. Eight people were killed in the Philippines. Throughout Aurora, heavy rains triggered flash flooding which destroyed at least one home and stranded hundreds of residents. The Paltic barangay, within Dingalan, became inaccessible to rescuers after the local river topped its banks and washed out nearby slopes. Following the system's development, PAGASA stated that rainfall from system could trigger landslides and flooding in Aurora, the Bicol Region, and Quezon.

China

On July 28, the Chinese government advised residents to stay indoors. Meteorologists also braced for heavy flooding and rainfall. The government also evacuated people from coast-lying areas, including ports. Other than rainfall, the government is also concerned for the Yangtze, which has experienced heavy flooding, with floodgates opening. A total of 3 million people had to be evacuated because of the storm. In China, The Xinhua State news reported that two people were killed by walls that were blown over by strong gales. The typhoon made landfall in Hainan, killing two people. The typhoon later made landfall near the city of Wuchuan. State-run television broadcast images of large waves crashing on to the Guangdong shore, trees flattened by wind and electric poles collapsed onto streets under heavy rain. Thereafter heavy flooding swept away a 50-year-old man in a village in Hong Kong. The southern Chinese provinces of Guangdong and Hainan braced themselves, ahead of Typhoon Chanthu's expected landfall. Guangdong meteorological authorities, have launched the highest level of disaster response. In all, 9 people were killed in South China, and total economic losses were counted to be CNY 5.54 billion (US$817.7 million).

Vietnam

The storm triggered heavy rainfall in Vietnam, with an estimated amount of 63–67 millimetres (2.5–2.6 in) in the Lào Cai province. The rain also destructed infrastructure, injuring three people, and blocking a line, which caused a traffic jam. In the Yên Bái province, 13 houses were destroyed by the storm. The major Duong floating bridge was also removed because of high floods in the Đuống River. A total of 10 people died in Vietnam, with 7 fatalities in Hà Giang province, 2 in the Cao Bằng province, and 1 in the Lao Cai province. In the Bắc Giang province, 10 communes were isolated and 44,100 hectares (170 sq mi) of destroyed rice crops. Also, in Yên Bái province, 18 hectares (0.069 sq mi) of rice was damaged while 5 hectares (0.019 sq mi) of fishponds were damaged.

Aftermath

After 700 flooding deaths and multiple storms, the Chinese government added flood reinforcements for thousands of reservoirs in China. "The central government is planning to reinforce all the small reservoirs, with a special safety official in charge, and enough money for maintenance," said Zhou Xuewen, head of the planning department with the Ministry of Water Resources.

See also

• Other tropical cyclones named Chanthu
• Other tropical cyclones named Caloy

References

1. "JMA WWJP25 Advisory 2010-07-17 00z". Japan Meteorological Agency. 2010-07-17. Archived from the original on July 29, 2010. Retrieved 2010-07-17.{{cite web}}: CS1 maint: unfit URL (link)
2. ^ "Significant Weather Advisory for the Western/South Pacific Oceans". 17 July 2010. Retrieved 2 September 2024.
3. "Warning and Summary 170000". Retrieved 2 September 2024.
4. "Significant Weather Advisory for the Western and South Pacific Oceans Reissued". 17 July 2010. Retrieved 2 September 2024.
5. ^ Philippine Atmospheric, Geophysical and Astronomical Services Administration (2010-07-17). "Shallow Low Pressure Area Weather Advisory One" (PDF). National Disaster Coordinating Council. Archived from the original (PDF) on 23 August 2011. Retrieved 2010-07-17.
6. "Tropical Cyclone Formation Alert". 18 July 2010. Retrieved 2 September 2024.
7. ^ "Digital Typhoon: Typhoon 201003 (CHANTHU) - General Information (Pressure and Track Charts)". agora.ex.nii.ac.jp. Retrieved 2024-09-04.
8. "Severe Weather Bulletin Number ONE". 19 July 2010. Retrieved 2 September 2024.
9. "RSMC Tropical Cyclone Advisory". 19 July 2010. Retrieved 2 September 2024.
10. "RSMC Tropical Cyclone Advisory". 22 July 2024. Retrieved 2 September 2024.
11. "RSMC Tropical Cyclone Advisory". 23 July 2010. Retrieved 2 September 2024.
12. "Effects of Active Low Pressure Area in Aurora Province" (PDF). National Disaster Coordinating Council. 2010-07-18.
13. "NDCC Advisory Number 01" (PDF). National Disaster Coordinating Council. 17 July 2010. Archived from the original (PDF) on 23 August 2011. Retrieved 4 September 2024.
14. ^ "China : Officials fear floods, strained reinforcements - China | ReliefWeb". reliefweb.int. 2010-07-28. Retrieved 2024-09-03.
15. "Typhoon Chanthu weakens as it makes landfall in southern China - CNN.com". www.cnn.com. Retrieved 2024-09-03.
16. "China fears floods as typhoon hits". Al Jazeera. Retrieved 2024-09-04.
17. ^ Typhoon Chanthu lashes flood-hit China, July 22, 2010.
18. Typhoon Chanthu kills 3 becomes Tropical Storm heading North
19. Reporter: Impact of tropical storm Chanthu July 22, 2010
20. ""灿都"致3省9人死亡600万人受灾". 中国天气网. July 30, 2010.
21. "Viet Nam: Flood surges in northern provinces - Viet Nam | ReliefWeb". reliefweb.int. 2010-07-28. Retrieved 2024-09-03.
22. "Viet Nam: Storm Chanthu claims 10 lives in north - Viet Nam | ReliefWeb". reliefweb.int. 2010-07-26. Retrieved 2024-09-03.
23. "China : Officials fear floods, strained reinforcements - China | ReliefWeb". reliefweb.int. 2010-07-28. Retrieved 2024-09-02.

External links

• JMA General Information of Typhoon Chanthu (1003) from Digital Typhoon
• The JMA's Best Track Data on Typhoon Chanthu (1003) (in Japanese)
• The JMA's RSMC Best Track Data (Graphics) on Typhoon Chanthu (1003)
• The JMA's RSMC Best Track Data (Text)
• The JTWC's Best Track Data on Typhoon 04W (Chanthu)
• 04W.CHANTHU from the U.S. Naval Research Laboratory

v t e Tropical cyclones of the 2010 Pacific typhoon season
	TD01W TSOmais TDTD TYConson TYChanthu TDTD TDTD TDTD TSDomeng STSDianmu TSMindulle TDTD STSLionrock TYKompasu TSNamtheun TDTD STSMalou STSMeranti VSTYFanapi VSTYMalakas TD14W TDTD VITYMegi VSTYChaba TD17W TDTD TD18W TD19W TDOmeka
Category

• 2010 disasters in the Philippines
• Typhoons in the Philippines
• 2010 Pacific typhoon season
• Typhoons in Vietnam
• Typhoons in China
• Typhoons in Hong Kong
• Tropical cyclones in 2010