Overall Green Tropical Cyclone alert for TWELVE-21 Off-shore from 02 Aug 2021 06:00 UTC to 04 Aug 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 Green alert Tropical Cyclone for TWELVE-21

Off-shore

04 Aug 2021 18 UTC

click on

to select bulletin time

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	GDACS
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	56 km/h
Maximum storm surge	0.2 m (05 Aug 20:00 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
Current	65 km/h	0.2 m	n.a.	0.5
Overall	56 km/h	0.2 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

TOP

Wind

65 km/h Current Max.

Up to no people in Tropical Storm 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
1	02 Aug 2021 06:00	56	No people	No people
2	02 Aug 2021 12:00	56	No people	No people
3	02 Aug 2021 18:00	56	No people	No people
4	03 Aug 2021 00:00	56	No people	No people
5	03 Aug 2021 06:00	46	No people	No people
6	04 Aug 2021 18:00	65	No people	No people

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	02 Aug 2021 06:00	Tropical depression	56	no people	no people	23, 154.2
2	02 Aug 2021 12:00	Tropical depression	56	no people	no people	23.5, 153.6
3	02 Aug 2021 18:00	Tropical depression	56	no people	no people	25.4, 153.2
4	03 Aug 2021 00:00	Tropical depression	56	no people	no people	26.6, 152.1
5	03 Aug 2021 06:00	Tropical depression	46	no people	no people	27.5, 150.8
6	04 Aug 2021 18:00	Tropical depression	46	no people	no people	29.4, 140.4
6	05 Aug 2021 06:00	Tropical depression	56	no people	no people	29, 137.5
6	05 Aug 2021 18:00	Tropical storm	65	no people	no people	29.7, 136.4
6	06 Aug 2021 06:00	Tropical depression	56	no people	no people	30.9, 134.9
6	06 Aug 2021 18:00	Tropical depression	37	no people	no people	32.1, 132.4

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

Critical infrastructure

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

TOP

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.

...

TOP

StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Rokken, Japan. This height is estimated for 05 Aug 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 (36 locations). Calculation based on advisory number 6 of 04 Aug 2021 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	05 Aug 2021 20:00	Rokken	Japan	0.2
	05 Aug 2021 20:00	Sohara	Japan	0.2
	05 Aug 2021 20:00	Karasu	Japan	0.2
	05 Aug 2021 20:00	Shiratsuka	Japan	0.2
	05 Aug 2021 20:00	Matsuzaka	Japan	0.2
	05 Aug 2021 20:00	Ueno	Japan	0.2
	05 Aug 2021 20:00	Shiroko	Japan	0.2
	05 Aug 2021 20:00	Tsu	Japan	0.1
	05 Aug 2021 20:00	Suzuka	Japan	0.1
	05 Aug 2021 20:00	Saiku	Japan	0.1
	05 Aug 2021 20:00	Muramatsu	Japan	0.1
	05 Aug 2021 20:00	Hasedashi	Japan	0.1
	05 Aug 2021 20:00	Obata	Japan	0.1
	05 Aug 2021 20:00	Akeno	Japan	0.1
	05 Aug 2021 20:00	Ise	Japan	0.1
	05 Aug 2021 20:00	Ominato	Japan	0.1
	05 Aug 2021 20:00	Futami	Japan	0.1
	05 Aug 2021 22:00	Tomari	Japan	0.1
	05 Aug 2021 22:00	Sakabe	Japan	0.1
	05 Aug 2021 22:00	Yokkaichi	Japan	0.1
	05 Aug 2021 21:00	Matsuo	Japan	0.1
	05 Aug 2021 21:00	Toba	Japan	0.1
	05 Aug 2021 22:00	Tokoname	Japan	0.1
	05 Aug 2021 22:00	Kume	Japan	0.1
	05 Aug 2021 22:00	Noma	Japan	0.1
	05 Aug 2021 22:00	Otani	Japan	0.1
	05 Aug 2021 22:00	Utsumi	Japan	0.1
	05 Aug 2021 22:00	Yamata	Japan	0.1
	05 Aug 2021 22:00	Okada	Japan	0.1
	05 Aug 2021 19:00	Imazu	Japan	0.1
	05 Aug 2021 19:00	Go-Sakurai	Japan	0.1
	05 Aug 2021 19:00	Hama-sakurai	Japan	0.1
	05 Aug 2021 19:00	Miyoshi	Japan	0.1
	05 Aug 2021 19:00	Nyugawa	Japan	0.1
	05 Aug 2021 19:00	Komatsu	Japan	0.1
	05 Aug 2021 19:00	Saijo	Japan	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.