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

04 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	0.5 m (04 Aug 22:45 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	0.5 m	147 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 40 thousand can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 04 Aug 2021 18:00 UTC

Category	Country	Population
Tropical Storm	Japan	44,642

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	76	-	-	-	-	-	-	-
8	04 Aug 2021 00:00	65	-	-	-	-	-	-	-
9	04 Aug 2021 06:00	72	-	-	-	-	-	-	-
10	04 Aug 2021 12:00	68	-		-	-	-	-	-	Japan
11	04 Aug 2021 18:00	79	-		-	-	-	-	-	Japan

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 04 Aug 2021 18:00 UTC

Level	Country	Population
100-250 mm	Japan	8,448
50-100 mm	Japan	101,126

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	197	-	-	-	-	-	-	-
8	04 Aug 2021 00:00	149	-	-	-	-	-	-	-
9	04 Aug 2021 06:00	138	-	-	-	-	-	-	-
10	04 Aug 2021 12:00	164	-	-	-	-	-	-	-
11	04 Aug 2021 18:00	312	8 thousand			-	-	-	-	Japan

Impact estimation for the next 72h

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StormSurge

0.5 m

The maximum Storm surge height is 0.5m in Changsu, Republic of Korea. This height is estimated for 04 Aug 2021 22:45 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 04 Aug 2021 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 Aug 2021 22:45	Changsu	Republic of Korea	0.5
	04 Aug 2021 22:45	Aya-ri	Republic of Korea	0.5
	04 Aug 2021 22:45	Ch'ongam	Republic of Korea	0.5
	04 Aug 2021 22:45	Chamdu	Republic of Korea	0.3
	04 Aug 2021 22:45	Chinch'ang	Republic of Korea	0.3
	04 Aug 2021 22:30	Changjong-ni	Republic of Korea	0.3
	04 Aug 2021 22:30	Chijung-ni	Republic of Korea	0.3
	04 Aug 2021 18:00	Nishinoura	Japan	0.2
	04 Aug 2021 18:00	Meihama	Japan	0.2
	04 Aug 2021 18:00	Saitosaki	Japan	0.2
	04 Aug 2021 18:00	Fukuoka	Japan	0.2
	04 Aug 2021 18:00	Mitoma	Japan	0.2
	04 Aug 2021 18:00	Kashii	Japan	0.2
	04 Aug 2021 18:00	Harumachi	Japan	0.2
	04 Aug 2021 18:00	Tsuyazaki	Japan	0.2
	04 Aug 2021 18:00	Shingu	Japan	0.2
	04 Aug 2021 18:00	Fukumamachi	Japan	0.2
	04 Aug 2021 18:00	Fukuma	Japan	0.2
	04 Aug 2021 18:00	Maebaru	Japan	0.2
	04 Aug 2021 22:30	Chifuwa	Japan	0.1
	04 Aug 2021 22:30	Itoman	Japan	0.1
	04 Aug 2021 22:30	Naha	Japan	0.1
	04 Aug 2021 22:30	Nakaza	Japan	0.1
	04 Aug 2021 22:30	Ishimine	Japan	0.1
	04 Aug 2021 22:30	Kadena	Japan	0.1
	04 Aug 2021 21:30	Aka	Japan	0.1
	04 Aug 2021 21:30	Zamami	Japan	0.1
	04 Aug 2021 21:30	Awaren	Japan	0.1
	04 Aug 2021 21:30	Tokashiku	Japan	0.1
	04 Aug 2021 21:45	Nakao	Japan	0.1
	04 Aug 2021 21:45	Teima	Japan	0.1
	04 Aug 2021 21:45	Obo	Japan	0.1
	04 Aug 2021 21:45	Ogimi	Japan	0.1
	04 Aug 2021 21:45	Kaata	Japan	0.1
	04 Aug 2021 21:45	Ada	Japan	0.1
	04 Aug 2021 22:00	Tonaki	Japan	0.1
	04 Aug 2021 18:00	Keya	Japan	0.1
	04 Aug 2021 23:30	Azuchi	Japan	0.1
	04 Aug 2021 23:30	Hirado	Japan	0.1
	04 Aug 2021 23:30	Emukae	Japan	0.1
	04 Aug 2021 23:30	Mikuriya	Japan	0.1
	04 Aug 2021 23:30	Matsuura	Japan	0.1
	04 Aug 2021 23:30	Ao	Japan	0.1
	04 Aug 2021 23:30	Madarashima	Japan	0.1
	04 Aug 2021 23:30	Imabuku	Japan	0.1
	04 Aug 2021 23:30	Kusuku	Japan	0.1
	04 Aug 2021 21:30	Atsuta	Japan	0.1
	04 Aug 2021 21:30	Fusozaki	Japan	0.1
	04 Aug 2021 21:30	Ishikawa	Japan	0.1
	04 Aug 2021 21:30	Henna	Japan	0.1
	04 Aug 2021 21:30	Kin	Japan	0.1
	04 Aug 2021 20:45	Aguni	Japan	0.1
	04 Aug 2021 20:45	Hama	Japan	0.1
	04 Aug 2021 18:00	Yobuko	Japan	0.1
	04 Aug 2021 18:00	Tobo	Japan	0.1
	04 Aug 2021 18:00	Karatsu	Japan	0.1
	04 Aug 2021 18:00	Oka	Japan	0.1
	04 Aug 2021 20:30	Hangch'on	Republic of Korea	0.1
	04 Aug 2021 20:30	Namhae	Republic of Korea	0.1
	04 Aug 2021 20:30	Gonyang	Republic of Korea	0.1
	04 Aug 2021 20:30	Pit'o	Republic of Korea	0.1
	04 Aug 2021 20:30	Samcheongpo	Republic of Korea	0.1
	04 Aug 2021 18:00	Fuchinoe	Japan	0.1
	04 Aug 2021 18:00	Fukae	Japan	0.1
	05 Aug 2021 00:00	Chabang	Japan	0.1
	05 Aug 2021 00:00	Kano	Japan	0.1
	05 Aug 2021 00:00	Ashito	Japan	0.1
	05 Aug 2021 00:00	Nama	Japan	0.1
	05 Aug 2021 00:00	Mugiya	Japan	0.1
	05 Aug 2021 00:00	Ashiya	Japan	0.1
	05 Aug 2021 00:00	Kita-kyushu	Japan	0.1
	05 Aug 2021 00:00	Yoshimoura	Japan	0.1
	05 Aug 2021 00:00	Murotsuura	Japan	0.1
	05 Aug 2021 00:00	Yasuoka	Japan	0.1
	05 Aug 2021 00:00	Hedo	Japan	0.1
	04 Aug 2021 18:00	Kanesaki	Japan	0.1
	04 Aug 2021 21:30	Toguchi	Japan	0.1
	04 Aug 2021 21:30	Nago	Japan	0.1
	04 Aug 2021 23:45	Ichi	Japan	0.1
	04 Aug 2021 18:30	Kanda	Japan	0.1
	04 Aug 2021 18:30	Shimonoseki	Japan	0.1
	04 Aug 2021 18:30	Tsunemi	Japan	0.1
	04 Aug 2021 18:00	Seto	Japan	0.1
	04 Aug 2021 20:45	Higashieue	Japan	0.1
	04 Aug 2021 23:45	Yamanaka	Japan	0.1
	04 Aug 2021 21:00	Izena	Japan	0.1
	04 Aug 2021 18:00	Susuna	Japan	0.1
	04 Aug 2021 18:00	Kin	Japan	0.1
	04 Aug 2021 18:00	Furusato	Japan	0.1
	04 Aug 2021 18:00	Toyo	Japan	0.1
	04 Aug 2021 23:45	Gonoura	Japan	0.1
	04 Aug 2021 23:45	Katsumoto	Japan	0.1
	04 Aug 2021 22:30	Shimajiri	Japan	0.1
	04 Aug 2021 22:30	Gakiya	Japan	0.1
	04 Aug 2021 22:30	Maetomari	Japan	0.1
	04 Aug 2021 22:30	Tana	Japan	0.1
	04 Aug 2021 19:00	Chofu	Japan	0.1
	04 Aug 2021 19:00	Moji	Japan	0.1
	04 Aug 2021 19:00	Kagawa	Japan	0.1
	04 Aug 2021 18:00	Araebuch'un	Republic of Korea	0.1
	04 Aug 2021 18:00	Chuktori	Republic of Korea	0.1
	04 Aug 2021 18:00	Jangseunpo	Republic of Korea	0.1
	04 Aug 2021 18:00	Daiko	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.