Overall Green Tropical Cyclone alert for TWELVE-21 Off-shore from 02 Aug 2021 06:00 UTC to 06 Aug 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 Green alert Tropical Cyclone for TWELVE-21

Off-shore

03 Aug 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 TWELVE-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GFS
Exposed countries	Japan
Exposed population	No people in Category 1 or higher
Maximum wind speed	76 km/h
Maximum storm surge	0.8 m (03 Aug 23:15 UTC)
Vulnerability	--

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
GFS Current	76 km/h	0.8 m	197 mm	0.5
GFS Overall	104 km/h	0.8 m	554 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

104 km/h

Up to 210 thousand can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 03 Aug 2021 18:00 UTC

Category	Country	Population
Tropical Storm	Japan	209,627

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Winds (km/h)	Pop in Cat. 1 or higher	TS	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5	Countries
1	02 Aug 2021 06:00	54	-	-	-	-	-	-	-
2	02 Aug 2021 12:00	58	-	-	-	-	-	-	-
3	02 Aug 2021 18:00	65	-	-	-	-	-	-	-
4	03 Aug 2021 00:00	61	-	-	-	-	-	-	-
5	03 Aug 2021 06:00	68	-	-	-	-	-	-	-
6	03 Aug 2021 12:00	72	-	-	-	-	-	-	-
7	03 Aug 2021 18:00	90	-		-	-	-	-	-	Japan

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 03 Aug 2021 18:00 UTC

Level	Country	Population
100-250 mm	Japan	2,123
50-100 mm	Japan	1,622

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	02 Aug 2021 06:00	22	-	-	-	-	-	-	-
2	02 Aug 2021 12:00	58	-	-	-	-	-	-	-
3	02 Aug 2021 18:00	113	260 thousand			-	-	-	-	Japan
4	03 Aug 2021 00:00	79	-	-	-	-	-	-	-
5	03 Aug 2021 06:00	103	-	-	-	-	-	-	-
6	03 Aug 2021 12:00	181	-	-	-	-	-	-	-
7	03 Aug 2021 18:00	411	2 thousand			-	-	-	-	Japan

Impact estimation for the next 72h

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StormSurge

0.8 m

The maximum Storm surge height is 0.8m in Changsu, Republic of Korea. This height is estimated for 03 Aug 2021 23:15 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. 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.

Storm Surge Exposed population - AoIs

Storm Surge Exposed locations

Calculation based on the bulletin of 03 Aug 2021 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	03 Aug 2021 23:15	Changsu	Republic of Korea	0.8
	03 Aug 2021 23:15	Aya-ri	Republic of Korea	0.8
	03 Aug 2021 23:15	Ch'ongam	Republic of Korea	0.8
	03 Aug 2021 18:00	Chamdu	Republic of Korea	0.6
	03 Aug 2021 18:00	Chinch'ang	Republic of Korea	0.6
	03 Aug 2021 23:15	Changjong-ni	Republic of Korea	0.5
	03 Aug 2021 23:15	Chijung-ni	Republic of Korea	0.5
	03 Aug 2021 18:00	Hangch'on	Republic of Korea	0.3
	03 Aug 2021 18:00	Namhae	Republic of Korea	0.3
	03 Aug 2021 18:00	Gonyang	Republic of Korea	0.3
	03 Aug 2021 18:00	Pit'o	Republic of Korea	0.3
	03 Aug 2021 18:00	Samcheongpo	Republic of Korea	0.3
	03 Aug 2021 18:00	Sacheon	Republic of Korea	0.2
	03 Aug 2021 22:15	Anp'o	Republic of Korea	0.2
	03 Aug 2021 22:15	Chungbang	Republic of Korea	0.2
	03 Aug 2021 22:15	Chabong	Republic of Korea	0.2
	03 Aug 2021 22:15	Yeosu	Republic of Korea	0.2
	03 Aug 2021 22:15	Chukp'o	Republic of Korea	0.2
	03 Aug 2021 22:45	Chinsan-ni	Republic of Korea	0.2
	03 Aug 2021 19:15	Nago	Japan	0.2
	03 Aug 2021 19:15	Nakao	Japan	0.2
	03 Aug 2021 19:15	Teima	Japan	0.2
	03 Aug 2021 19:15	Obo	Japan	0.2
	03 Aug 2021 19:15	Ogimi	Japan	0.2
	03 Aug 2021 19:15	Kaata	Japan	0.2
	03 Aug 2021 22:30	Changdo-ri	Republic of Korea	0.1
	03 Aug 2021 22:00	Kok'ori	Republic of Korea	0.1
	03 Aug 2021 22:00	Aech'o-ri	Republic of Korea	0.1
	03 Aug 2021 22:30	Ando	Republic of Korea	0.1
	03 Aug 2021 18:15	Chifuwa	Japan	0.1
	03 Aug 2021 18:15	Itoman	Japan	0.1
	03 Aug 2021 18:15	Naha	Japan	0.1
	03 Aug 2021 18:15	Nakaza	Japan	0.1
	03 Aug 2021 18:15	Ishimine	Japan	0.1
	03 Aug 2021 18:15	Kadena	Japan	0.1
	03 Aug 2021 18:15	Atsuta	Japan	0.1
	03 Aug 2021 18:15	Fusozaki	Japan	0.1
	03 Aug 2021 18:15	Henna	Japan	0.1
	03 Aug 2021 19:00	Aka	Japan	0.1
	03 Aug 2021 19:00	Zamami	Japan	0.1
	03 Aug 2021 19:00	Awaren	Japan	0.1
	03 Aug 2021 19:00	Tokashiku	Japan	0.1
	03 Aug 2021 21:30	Watari	Japan	0.1
	03 Aug 2021 21:30	Yamashita	Japan	0.1
	03 Aug 2021 21:30	Yokoyama	Japan	0.1
	03 Aug 2021 21:30	Shibamachi	Japan	0.1
	03 Aug 2021 21:30	Warabi	Japan	0.1
	03 Aug 2021 21:30	Kaikomba	Japan	0.1
	03 Aug 2021 21:30	Kasano	Japan	0.1
	03 Aug 2021 21:30	Sakamoto	Japan	0.1
	03 Aug 2021 21:30	Hanagama	Japan	0.1
	03 Aug 2021 21:30	Arahama	Japan	0.1
	03 Aug 2021 21:30	Komagamine	Japan	0.1
	03 Aug 2021 21:30	Iso	Japan	0.1
	03 Aug 2021 21:30	Nakumura	Japan	0.1
	03 Aug 2021 21:30	Tsurishi	Japan	0.1
	03 Aug 2021 21:30	Tachiya	Japan	0.1
	03 Aug 2021 21:30	Haragama	Japan	0.1
	03 Aug 2021 21:30	Umekawa	Japan	0.1
	03 Aug 2021 21:30	Isobe	Japan	0.1
	03 Aug 2021 18:00	Hedo	Japan	0.1
	03 Aug 2021 18:00	Ada	Japan	0.1
	03 Aug 2021 19:30	Maebaru	Japan	0.1
	03 Aug 2021 19:30	Nishinoura	Japan	0.1
	03 Aug 2021 19:30	Meihama	Japan	0.1
	03 Aug 2021 19:30	Saitosaki	Japan	0.1
	03 Aug 2021 19:30	Fukuoka	Japan	0.1
	03 Aug 2021 19:30	Mitoma	Japan	0.1
	03 Aug 2021 19:30	Kashii	Japan	0.1
	03 Aug 2021 19:30	Harumachi	Japan	0.1
	03 Aug 2021 19:30	Tsuyazaki	Japan	0.1
	03 Aug 2021 19:30	Shingu	Japan	0.1
	03 Aug 2021 19:30	Fukumamachi	Japan	0.1
	03 Aug 2021 19:30	Fukuma	Japan	0.1
	03 Aug 2021 18:45	Ishikawa	Japan	0.1
	03 Aug 2021 18:45	Kin	Japan	0.1
	03 Aug 2021 21:30	Ch'angch'on	Republic of Korea	0.1
	03 Aug 2021 19:00	Ichi	Japan	0.1
	03 Aug 2021 19:30	Tonaki	Japan	0.1
	03 Aug 2021 22:00	Cholge	Republic of Korea	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.