Overall Red Tropical Cyclone alert for CHANTHU-21 in China, Philippines from 06 Sep 2021 06:00 UTC to 08 Sep 2021 00:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Red alert Tropical Cyclone for CHANTHU-21

in China, Philippines

08 Sep 2021 00 UTC

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Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone CHANTHU-21 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Glide number:	TC-2021-000140-PHL
Exposed countries	China, Philippines
Exposed population	5 million in Category 1 or higher
Maximum wind speed	287 km/h
Maximum storm surge	0.5 m (10 Sep 20:00 UTC)
Vulnerability	Medium (China)
Landfall	between 12 Sep 2021 00:00 - 13 Sep 2021 00:00 in China

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.

	Wind	Storm surge	Rainfall	GDACS score
Current	176 km/h	0.5 m	n.a.	1.5
Overall	287 km/h	0.5 m	n.a.	1.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

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Wind

176 km/h Current Max.

Up to 1.9 million people in Category 1 strength or higher (see SSHS)

Impact Timeline

N°	Date (UTC)	Max Winds (km/h)	Population in Tropical Storm or higher	Population in Cat 1. or higher	Countries
1	06 Sep 2021 06:00	176	1.2 million	No people	Japan, China
2	06 Sep 2021 12:00	176	670 thousand	No people	Japan, China
3	06 Sep 2021 18:00	194	8.7 million	1.7 million	China
4	07 Sep 2021 00:00	194	12.2 million	3.5 million	China
5	07 Sep 2021 06:00	213	27.9 million	5.9 million	China
6	07 Sep 2021 12:00	241	32.3 million	50 thousand	China
7	07 Sep 2021 18:00	241	58 million	1.4 million	China
8	08 Sep 2021 00:00	176	44.1 million	1.9 million	China

Bulletin Timeline

N°	Date (UTC)	Category (SSHS)	Max winds (km/h)	Population in Cat.1 or higher	Population in Tropical Storm or higher	Location (lat, lon)	Countries
1	06 Sep 2021 06:00	Tropical depression	46	no people	no people	14, 138.3
2	06 Sep 2021 12:00	Tropical depression	56	no people	no people	14.7, 138.1
3	06 Sep 2021 18:00	Tropical storm	83	no people	no people	15.3, 137.4
4	07 Sep 2021 00:00	Tropical storm	93	no people	no people	15.6, 136.6
5	07 Sep 2021 06:00	Category 1	120	no people	no people	16.1, 135.7
6	07 Sep 2021 12:00	Category 1	130	no people	no people	16.3, 134.6
7	07 Sep 2021 18:00	Category 4	231	no people	no people	16.3, 133.5
8	08 Sep 2021 00:00	Category 4	222	no people	no people	16, 132.3
8	08 Sep 2021 12:00	Category 4	250	no people	no people	16, 130.4
8	09 Sep 2021 00:00	Category 4	250	no people	no people	16.3, 128.3
8	09 Sep 2021 12:00	Category 4	231	no people	84000 people	17.2, 126.1
8	10 Sep 2021 00:00	Category 4	231	3100 people	1.3 million people	18.4, 124
8	11 Sep 2021 00:00	Category 4	241	no people	7 million people	20.4, 121.2
8	12 Sep 2021 00:00	Category 2	176	1.9 million people	42.8 million people	22.1, 119.1
8	13 Sep 2021 00:00	Category 1	130	no people	no people	23.8, 117.3	China

Actual track of the current bulletin

The alert for forecast greater than 3 days is limited to Orange level.

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Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
China

Provinces

Region Province	Country
Fujian	China
Guangdong	China

Populated places

Name	Region Province	Country	City class	Population
Chengguanzhen	Fujian	China	City	-
Duxun	Fujian	China	City	-
Zhaoan	Guangdong	China	City	-
Zhelin	Guangdong	China	City	-
Xiahe	Fujian	China	City	-
Huanggang	Guangdong	China	City	220000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Dams

Dam Name	River	Year
Zumalin	Xugouxi	1976
Dutang	Baiyinxi	1959
Fengtou	Zhang Jiang	1977

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Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

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StormSurge

0.5 m

The maximum Storm surge height is 0.5m in Nakanmuan, Philippines. This height is estimated for 10 Sep 2021 20:00 UTC .

The JRC has developed an experimental global storm surge model. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Locations affected by Storm surge (105 locations). Calculation based on advisory number 8 of 08 Sep 2021 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	10 Sep 2021 20:00	Nakanmuan	Philippines	0.5
	10 Sep 2021 20:00	Sabtang	Philippines	0.5
	10 Sep 2021 20:00	Chavayan	Philippines	0.5
	10 Sep 2021 20:00	Ivana	Philippines	0.4
	10 Sep 2021 20:00	Itbud	Philippines	0.4
	10 Sep 2021 20:00	Mahatao	Philippines	0.2
	10 Sep 2021 20:00	Basco	Philippines	0.2
	12 Sep 2021 00:00	Guleitou	China	0.2
	12 Sep 2021 00:00	Gangkou	China	0.2
	12 Sep 2021 00:00	Liu'ao	China	0.2
	12 Sep 2021 00:00	Shentu	China	0.2
	12 Sep 2021 00:00	Chendai	China	0.2
	12 Sep 2021 00:00	Hsi-pu	China	0.2
	12 Sep 2021 00:00	Chihu	China	0.2
	12 Sep 2021 00:00	Zhangban	China	0.2
	12 Sep 2021 00:00	Dongyuan	China	0.2
	12 Sep 2021 00:00	Dongsha	China	0.2
	12 Sep 2021 00:00	Lingchuan	China	0.2
	12 Sep 2021 00:00	Huqiu	China	0.2
	12 Sep 2021 00:00	Wutian	China	0.2
	12 Sep 2021 00:00	Gulangyu	China	0.2
	12 Sep 2021 00:00	Chen-hai	China	0.2
	12 Sep 2021 00:00	Yongning	China	0.2
	12 Sep 2021 00:00	Daomei	China	0.2
	12 Sep 2021 00:00	Zhenhai	China	0.2
	12 Sep 2021 00:00	Songyu	China	0.2
	12 Sep 2021 00:00	Chongwu	China	0.2
	12 Sep 2021 00:00	Shih-shih	China	0.2
	12 Sep 2021 00:00	Hsiang-chih	China	0.2
	12 Sep 2021 00:00	Hsia-mei	China	0.1
	12 Sep 2021 00:00	Gongqiancun	China	0.1
	12 Sep 2021 00:00	Fotan	China	0.1
	12 Sep 2021 00:00	Fugong	China	0.1
	12 Sep 2021 00:00	Gangwei	China	0.1
	12 Sep 2021 00:00	Xucuo	China	0.1
	12 Sep 2021 00:00	Shenao	China	0.1
	12 Sep 2021 00:00	Chencheng	China	0.1
	12 Sep 2021 00:00	Xiamen	China	0.1
	12 Sep 2021 00:00	Yang-chai	Taiwan	0.1
	12 Sep 2021 00:00	Weitou	China	0.1
	12 Sep 2021 00:00	Qian'an	China	0.1
	12 Sep 2021 00:00	Huanglong	China	0.1
	12 Sep 2021 00:00	An-ting	Taiwan	0.1
	12 Sep 2021 00:00	Chin-men	Taiwan	0.1
	12 Sep 2021 00:00	Chin-men Tao	Taiwan	0.1
	12 Sep 2021 00:00	Chin-ching	China	0.1
	12 Sep 2021 00:00	Wangchuan	China	0.1
	12 Sep 2021 00:00	Dawu	China	0.1
	12 Sep 2021 00:00	Fengwei	China	0.1
	12 Sep 2021 00:00	Hsiao-tso	China	0.1
	12 Sep 2021 00:00	Shihu	China	0.1
	12 Sep 2021 00:00	Daitou	China	0.1
	10 Sep 2021 16:00	San Dionisio	Philippines	0.1
	12 Sep 2021 00:00	Chengguanzhen	China	0.1
	12 Sep 2021 00:00	Zhelin	China	0.1
	12 Sep 2021 00:00	Gongkou	China	0.1
	12 Sep 2021 00:00	Dongshan	China	0.1
	12 Sep 2021 00:00	Jiangtou	China	0.1
	12 Sep 2021 00:00	Hecuo	China	0.1
	12 Sep 2021 00:00	Zhongmen	China	0.1
	12 Sep 2021 00:00	P'u-hsi	China	0.1
	12 Sep 2021 00:00	Meizhou	China	0.1
	12 Sep 2021 00:00	Baisheng	China	0.1
	12 Sep 2021 00:00	Dianqian	China	0.1
	12 Sep 2021 00:00	Cao Yu	China	0.1
	12 Sep 2021 00:00	Beicuo	China	0.1
	12 Sep 2021 00:00	Hanjiang	China	0.1
	12 Sep 2021 00:00	Chiang-k'ou	China	0.1
	12 Sep 2021 00:00	Jiuzhen	China	0.1
	12 Sep 2021 00:00	Huanggang	China	0.1
	12 Sep 2021 00:00	Houzhai	China	0.1
	12 Sep 2021 00:00	Aotou	China	0.1
	12 Sep 2021 00:00	Ch'ing-hsu	Taiwan	0.1
	12 Sep 2021 00:00	Tung-shih	China	0.1
	12 Sep 2021 00:00	Yakou	China	0.1
	12 Sep 2021 00:00	P'u-hsi-ch'eng	China	0.1
	12 Sep 2021 00:00	Daitou	China	0.1
	12 Sep 2021 00:00	Chiang-t'ien	China	0.1
	12 Sep 2021 00:00	Jinghai	China	0.1
	11 Sep 2021 22:00	Tung-chiang	Taiwan	0.1
	11 Sep 2021 22:00	T'ien-ch'ien-ts'o	Taiwan	0.1
	11 Sep 2021 22:00	Wu-lung	Taiwan	0.1
	10 Sep 2021 18:00	Banua	Philippines	0.1
	10 Sep 2021 18:00	Rarasi	Philippines	0.1
	10 Sep 2021 22:00	Raile	Philippines	0.1
	10 Sep 2021 22:00	Itbayat	Philippines	0.1
	10 Sep 2021 22:00	Santa Lucia	Philippines	0.1
	12 Sep 2021 00:00	Raoping	China	0.1
	12 Sep 2021 00:00	Nanao	China	0.1
	12 Sep 2021 00:00	Chelim	China	0.1
	12 Sep 2021 00:00	Liuwudian	China	0.1
	12 Sep 2021 00:00	Lianhe	China	0.1
	12 Sep 2021 00:00	Sidu	China	0.1
	12 Sep 2021 00:00	Ssu-tu	China	0.1
	12 Sep 2021 00:00	Shijing	China	0.1
	12 Sep 2021 00:00	Pinghai	China	0.1
	12 Sep 2021 00:00	Wuhang	China	0.1
	12 Sep 2021 00:00	Xindian	China	0.1
	12 Sep 2021 00:00	Nanri	China	0.1
	12 Sep 2021 00:00	Fuye	China	0.1
	12 Sep 2021 00:00	Tung-tai	China	0.1
	12 Sep 2021 00:00	Guanban	China	0.1
	12 Sep 2021 00:00	Guangao	China	0.1
	12 Sep 2021 00:00	Shicheng	China	0.1
	12 Sep 2021 00:00	Tangbian	China	0.1

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.