Overall Red Tropical Cyclone alert for CHANTHU-21 in China, Philippines from 06 Sep 2021 06:00 UTC to 07 Sep 2021 18:00 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

07 Sep 2021 18 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	0.8 m (10 Sep 20:00 UTC)
Vulnerability	Medium (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	241 km/h	0.8 m	n.a.	1.5
Overall	287 km/h	0.8 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

241 km/h Current Max.

Up to 1.4 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

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)
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
7	08 Sep 2021 06:00	Category 4	250	no people	no people	16.3, 131.6
7	08 Sep 2021 18:00	Category 4	250	no people	no people	16.7, 129.7
7	09 Sep 2021 06:00	Category 4	241	no people	no people	17.3, 127.6
7	09 Sep 2021 18:00	Category 4	231	16000 people	890000 people	18.3, 125.4
7	10 Sep 2021 18:00	Category 4	241	55000 people	12.7 million people	20.4, 122.2
7	11 Sep 2021 18:00	Category 3	204	1.3 million people	57.3 million people	22, 119.9
7	12 Sep 2021 18:00	Category 2	157	no people	no people	23.6, 117.7

Actual track of the current bulletin

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

Download:

Exposed population - AoIs

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

Countries

Country
China

Provinces

Region Province	Country
Taiwan	China
Fujian	China
Guangdong	China

Populated places

Name	Region Province	Country	City class	Population
O-luan-pi	P'ing-tung	Taiwan	City	-
Maobitou	P'ing-tung	Taiwan	City	-
Heng-chjun	P'ing-tung	Taiwan	City	-
Duxun	Fujian	China	City	-
Chengguanzhen	Fujian	China	City	-
Zhaoan	Guangdong	China	City	-

Critical infrastructure

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

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)
Basco	BSO	56	Civ.	Paved	No	4100
Hengchun	HCN	13	Civ.	Paved	No	3500

Ports

Name	LOCODE	Country
Basco		Philippines

Dams

Reservoir	Dam Name	River	Year
	Zumalin	Xugouxi	1976
	Dutang	Baiyinxi	1959

Nuclear plants

Name	Country	Reactors
MAANSHAN	TAIWAN	2

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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

0.8 m

The maximum Storm surge height is 0.8m in Ivana, 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 (123 locations). Calculation based on advisory number 7 of 07 Sep 2021 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	10 Sep 2021 20:00	Ivana	Philippines	0.8
	10 Sep 2021 20:00	Itbud	Philippines	0.8
	10 Sep 2021 20:00	Nakanmuan	Philippines	0.8
	10 Sep 2021 20:00	Sabtang	Philippines	0.8
	10 Sep 2021 20:00	Chavayan	Philippines	0.8
	10 Sep 2021 20:00	Mahatao	Philippines	0.8
	10 Sep 2021 20:00	Basco	Philippines	0.8
	10 Sep 2021 20:00	Raile	Philippines	0.8
	10 Sep 2021 20:00	Itbayat	Philippines	0.8
	10 Sep 2021 20:00	Santa Lucia	Philippines	0.8
	11 Sep 2021 18:00	Tung-chiang	Taiwan	0.2
	11 Sep 2021 18:00	T'ien-ch'ien-ts'o	Taiwan	0.2
	11 Sep 2021 18:00	Wu-lung	Taiwan	0.2
	11 Sep 2021 14:00	Feng-chiang	Taiwan	0.2
	11 Sep 2021 18:00	Liu-chiu Hsu	Taiwan	0.2
	11 Sep 2021 13:00	Maobitou	Taiwan	0.2
	11 Sep 2021 13:00	Ta-kuang	Taiwan	0.2
	11 Sep 2021 18:00	Liu'ao	China	0.2
	11 Sep 2021 18:00	Shui-ti-liao	Taiwan	0.2
	11 Sep 2021 18:00	Yakou	China	0.2
	11 Sep 2021 13:00	Kenting	Taiwan	0.2
	11 Sep 2021 18:00	Guleitou	China	0.2
	11 Sep 2021 18:00	Gangkou	China	0.2
	11 Sep 2021 18:00	Zhangban	China	0.2
	11 Sep 2021 18:00	Dongyuan	China	0.2
	11 Sep 2021 18:00	Dongsha	China	0.2
	11 Sep 2021 18:00	Lingchuan	China	0.2
	11 Sep 2021 18:00	Yongning	China	0.2
	11 Sep 2021 13:00	Heng-chjun	Taiwan	0.1
	11 Sep 2021 18:00	Chendai	China	0.1
	11 Sep 2021 18:00	Hsi-pu	China	0.1
	11 Sep 2021 18:00	Chengguanzhen	China	0.1
	11 Sep 2021 18:00	Chihu	China	0.1
	11 Sep 2021 15:00	Fang-shan	Taiwan	0.1
	11 Sep 2021 18:00	Shih-shih	China	0.1
	11 Sep 2021 18:00	Huqiu	China	0.1
	11 Sep 2021 18:00	Wutian	China	0.1
	11 Sep 2021 18:00	Xucuo	China	0.1
	11 Sep 2021 18:00	Gulangyu	China	0.1
	11 Sep 2021 18:00	Chen-hai	China	0.1
	11 Sep 2021 18:00	Daomei	China	0.1
	11 Sep 2021 18:00	Zhenhai	China	0.1
	11 Sep 2021 18:00	Qian'an	China	0.1
	11 Sep 2021 18:00	Chongwu	China	0.1
	11 Sep 2021 18:00	Songyu	China	0.1
	11 Sep 2021 18:00	Daitou	China	0.1
	11 Sep 2021 18:00	Hsiang-chih	China	0.1
	11 Sep 2021 18:00	Cao Yu	China	0.1
	11 Sep 2021 13:00	O-luan-pi	Taiwan	0.1
	11 Sep 2021 18:00	Gongqiancun	China	0.1
	11 Sep 2021 18:00	Shentu	China	0.1
	11 Sep 2021 18:00	Ch'ing-hsu	Taiwan	0.1
	11 Sep 2021 18:00	Yang-chai	Taiwan	0.1
	11 Sep 2021 18:00	Weitou	China	0.1
	11 Sep 2021 18:00	Chin-ching	China	0.1
	11 Sep 2021 18:00	Chencheng	China	0.1
	11 Sep 2021 18:00	Wangchuan	China	0.1
	11 Sep 2021 18:00	Dawu	China	0.1
	11 Sep 2021 18:00	Hsiao-tso	China	0.1
	11 Sep 2021 18:00	Xiamen	China	0.1
	11 Sep 2021 18:00	Baisheng	China	0.1
	11 Sep 2021 18:00	Shihu	China	0.1
	11 Sep 2021 18:00	Beicuo	China	0.1
	11 Sep 2021 13:00	She-liao	Taiwan	0.1
	11 Sep 2021 13:00	Che-cheng	Taiwan	0.1
	11 Sep 2021 12:00	Hsu-hai	Taiwan	0.1
	11 Sep 2021 12:00	Chiang tzu	Taiwan	0.1
	11 Sep 2021 18:00	Hsia-mei	China	0.1
	11 Sep 2021 18:00	Fotan	China	0.1
	11 Sep 2021 18:00	Fugong	China	0.1
	11 Sep 2021 18:00	Gangwei	China	0.1
	11 Sep 2021 18:00	Chiang-t'ien	China	0.1
	11 Sep 2021 18:00	Jiuzhen	China	0.1
	11 Sep 2021 18:00	Chin-men	Taiwan	0.1
	11 Sep 2021 18:00	Lianhe	China	0.1
	11 Sep 2021 18:00	Chin-men Tao	Taiwan	0.1
	11 Sep 2021 18:00	Fengwei	China	0.1
	11 Sep 2021 18:00	Meizhou	China	0.1
	11 Sep 2021 18:00	Hou-ta-ts'o	Taiwan	0.1
	11 Sep 2021 18:00	I-jen	Taiwan	0.1
	11 Sep 2021 18:00	Nanri	China	0.1
	11 Sep 2021 18:00	Fuye	China	0.1
	11 Sep 2021 11:00	Kuo-ch'i	Taiwan	0.1
	11 Sep 2021 18:00	San Shah	China	0.1
	11 Sep 2021 18:00	Guhuai	China	0.1
	11 Sep 2021 18:00	Chang-chiang	China	0.1
	11 Sep 2021 18:00	Chin-feng	China	0.1
	11 Sep 2021 18:00	Wuhang	China	0.1
	11 Sep 2021 18:00	Guanjing	China	0.1
	11 Sep 2021 18:00	Qingfeng	China	0.1
	11 Sep 2021 18:00	Pingtan	China	0.1
	11 Sep 2021 18:00	Houtian	China	0.1
	11 Sep 2021 18:00	Langqi	China	0.1
	11 Sep 2021 18:00	Tantou	China	0.1
	11 Sep 2021 18:00	Yunlong	China	0.1
	11 Sep 2021 18:00	Houzhai	China	0.1
	11 Sep 2021 18:00	Zhelin	China	0.1
	11 Sep 2021 18:00	Shenao	China	0.1
	11 Sep 2021 18:00	Nanao	China	0.1
	11 Sep 2021 18:00	Gongkou	China	0.1
	11 Sep 2021 18:00	Dongshan	China	0.1
	11 Sep 2021 18:00	Jiangtou	China	0.1
	11 Sep 2021 18:00	Hecuo	China	0.1
	11 Sep 2021 18:00	Liuwudian	China	0.1
	11 Sep 2021 18:00	Aotou	China	0.1
	11 Sep 2021 18:00	An-ting	Taiwan	0.1
	11 Sep 2021 18:00	Zhongmen	China	0.1
	11 Sep 2021 18:00	P'u-hsi	China	0.1
	11 Sep 2021 18:00	P'u-hsi-ch'eng	China	0.1
	11 Sep 2021 18:00	Pinghai	China	0.1
	11 Sep 2021 18:00	Fengwo	China	0.1
	11 Sep 2021 18:00	Tung-tai	China	0.1
	11 Sep 2021 18:00	Mabi	China	0.1
	11 Sep 2021 18:00	Guanban	China	0.1
	11 Sep 2021 18:00	Ting-hai	China	0.1
	11 Sep 2021 18:00	Anhai	China	0.1
	11 Sep 2021 18:00	Ch'ang-t'an-wo	Taiwan	0.1
	11 Sep 2021 18:00	Chia-ho-ts'un	Taiwan	0.1
	11 Sep 2021 18:00	Ta-lin-pu	Taiwan	0.1
	11 Sep 2021 18:00	Kao-hsiung	Taiwan	0.1
	11 Sep 2021 18:00	Kuei-shan	Taiwan	0.1
	11 Sep 2021 18:00	Hanjiang	China	0.1
	11 Sep 2021 18:00	Chiang-k'ou	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.