Overall Green Tropical Cyclone alert for NIDA-21 Off-shore from 04 Aug 2021 12:00 UTC to 07 Aug 2021 06:00 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 NIDA-21

Off-shore

07 Aug 2021 06 UTC

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Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

Tropical Cyclone NIDA-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	102 km/h
Maximum storm surge	0.2 m (06 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	83 km/h	0.2 m	n.a.	0.5
Overall	102 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

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Wind

83 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	04 Aug 2021 12:00	65	No people	No people
2	04 Aug 2021 18:00	74	No people	No people
3	05 Aug 2021 00:00	93	No people	No people
5	05 Aug 2021 12:00	83	No people	No people
6	05 Aug 2021 18:00	83	No people	No people
7	06 Aug 2021 00:00	111	No people	No people
8	06 Aug 2021 06:00	111	No people	No people
9	06 Aug 2021 12:00	102	No people	No people
10	06 Aug 2021 18:00	102	No people	No people
11	07 Aug 2021 00:00	102	No people	No people
12	07 Aug 2021 06:00	83	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	04 Aug 2021 12:00	Tropical depression	56	no people	no people	28.8, 148
2	04 Aug 2021 18:00	Tropical depression	56	no people	no people	30.2, 147.7
3	05 Aug 2021 00:00	Tropical storm	74	no people	no people	31.6, 147.4
5	05 Aug 2021 12:00	Tropical storm	74	no people	no people	33.5, 148
6	05 Aug 2021 18:00	Tropical storm	74	no people	no people	34.5, 148.3
7	06 Aug 2021 00:00	Tropical storm	93	no people	no people	35.4, 149.9
8	06 Aug 2021 06:00	Tropical storm	102	no people	no people	36.2, 151.3
9	06 Aug 2021 12:00	Tropical storm	102	no people	no people	36.9, 153.2
10	06 Aug 2021 18:00	Tropical storm	102	no people	no people	37.8, 155.3
11	07 Aug 2021 00:00	Tropical storm	102	no people	no people	38.7, 157.9
12	07 Aug 2021 06:00	Tropical storm	83	no people	no people	39.1, 160.3
12	07 Aug 2021 18:00	Tropical storm	74	no people	no people	39.7, 165.8
12	08 Aug 2021 06:00	Tropical storm	65	no people	no people	40.6, 172.4

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

Critical infrastructure

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

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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

0.2 m

The maximum Storm surge height is 0.2m in Fushiko-tobuto, Japan. This height is estimated for 06 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 (8 locations). Calculation based on advisory number 3 of 05 Aug 2021 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	06 Aug 2021 20:00	Fushiko-tobuto	Japan	0.2
	06 Aug 2021 15:00	Odaito	Japan	0.1
	06 Aug 2021 15:00	Tokotan	Japan	0.1
	06 Aug 2021 14:00	Bekkai	Japan	0.1
	06 Aug 2021 15:00	Svetloye	Japan	0.1
	06 Aug 2021 15:00	Tomoshiri	Japan	0.1
	06 Aug 2021 21:00	Nishi-wada	Japan	0.1
	06 Aug 2021 21:00	Nemuro	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.