Overall Green Tropical Cyclone for BANG-LANG-26 in United States Minor Outlying Islands from 26 Aug 2026 06:00 UTC to 30 Aug 2026 12:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green Tropical Cyclone for BANG-LANG-26

in United States Minor Outlying Islands

27 Aug 2026 18 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone BANG-LANG-26 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GFS
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	119 km/h
Maximum storm surge	0.3 m (27 Aug 20:00 UTC)
Vulnerability	Low ()

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	119 km/h	0.3 m	201 mm	0.5
GFS Overall	148 km/h	0.4 m	537 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 27 Aug 2026 18:00 UTC

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
1	26 Aug 2026 06:00	61	-	-	-	-	-	-	-
2	26 Aug 2026 12:00	61	-	-	-	-	-	-	-
3	26 Aug 2026 18:00	72	-	-	-	-	-	-	-
4	27 Aug 2026 00:00	101	-	-	-	-	-	-	-
5	27 Aug 2026 06:00	97	-	-	-	-	-	-	-
6	27 Aug 2026 12:00	97	-	-	-	-	-	-	-
7	27 Aug 2026 18:00	148	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

537 mm

Up to 40 thousand can be affected by rain higher than 100mm (see SSHS)

Rain exposed population - AoIs

Estimations based on the bulletin of 27 Aug 2026 18:00 UTC

Level	Country	Population
100-250 mm	Micronesia	42,200	+
	Micronesia	42,122
	Other countries	77
50-100 mm	Russia, Marshall Islands, Micronesia	6,296	+
	Russia	1,135
	Marshall Islands	899
	Micronesia	4,091
	Other countries	169

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	26 Aug 2026 06:00	28	-	-	-	-	-	-	-
2	26 Aug 2026 12:00	95	-	-	-	-	-	-	-
3	26 Aug 2026 18:00	199	-	-	-	-	-	-	-
4	27 Aug 2026 00:00	133	-	-	-	-	-	-	-
5	27 Aug 2026 06:00	147	-	-	-	-	-	-	-
6	27 Aug 2026 12:00	203	-	-	-	-	-	-	-
7	27 Aug 2026 18:00	399	40 thousand			-	-	-	-	Russia, Marshall Islands, Micronesia, Other countries

Impact estimation for the next 72h

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StormSurge

0.3 m

The maximum Storm surge height is 0.3m in Higashirucharu, Russia. This height is estimated for 27 Aug 2026 20:00 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 27 Aug 2026 18:00 UTC

Level	Date (UTC)	Name	Country	Storm surge height (m)
	27 Aug 2026 20:00	Higashirucharu	Russia	0.3
	27 Aug 2026 20:00	Parusnoye	Russia	0.3
	27 Aug 2026 20:00	Sopochnyy	Russia	0.3
	27 Aug 2026 20:00	Sentyabrskiy	Russia	0.3
	27 Aug 2026 18:45	Tayezhnyy	Russia	0.3
	27 Aug 2026 18:45	Lesozavodskiy	Russia	0.3
	27 Aug 2026 18:45	Dobroye	Russia	0.3
	27 Aug 2026 18:45	Odesskiy	Russia	0.3
	27 Aug 2026 18:45	Mataruzaru	Russia	0.3
	27 Aug 2026 18:45	Selivanovka	Russia	0.3
	27 Aug 2026 18:45	Sanjibotsu	Russia	0.3
	27 Aug 2026 20:00	Reydovo	Russia	0.3
	27 Aug 2026 20:00	Rokubanchi	Russia	0.3
	27 Aug 2026 20:00	Sernozavodskiy	Russia	0.3
	27 Aug 2026 20:00	Sokitani	Russia	0.3
	27 Aug 2026 20:00	Astaurova	Russia	0.3
	27 Aug 2026 20:00	Chikkaporo	Russia	0.2
	27 Aug 2026 20:00	Kuybyshevo	Russia	0.2
	27 Aug 2026 20:00	Kasatka	Russia	0.2
	27 Aug 2026 20:15	Osenniy	Russia	0.2
	27 Aug 2026 20:15	Otlivnyy	Russia	0.2
	27 Aug 2026 20:15	Zolotoy	Russia	0.2
	27 Aug 2026 19:45	Okeanskiy	Russia	0.2
	27 Aug 2026 19:45	Iodnyy	Russia	0.2
	27 Aug 2026 19:45	Nov'	Russia	0.2
	27 Aug 2026 19:45	Mysovaya	Russia	0.2
	27 Aug 2026 20:00	Medvezhye	Russia	0.2
	27 Aug 2026 21:30	Shamambe	Russia	0.2
	27 Aug 2026 22:15	Rybaki	Russia	0.2
	27 Aug 2026 22:15	Chippuporo	Russia	0.2
	27 Aug 2026 22:15	Kurilsk	Russia	0.2
	27 Aug 2026 22:15	Yanketo	Russia	0.2
	27 Aug 2026 22:15	Kitovyy	Russia	0.2
	27 Aug 2026 22:15	Matoiso	Russia	0.2
	27 Aug 2026 22:30	Berezovka	Russia	0.2
	27 Aug 2026 22:30	Riyaushi	Russia	0.2
	27 Aug 2026 20:45	Rokko	Russia	0.2
	27 Aug 2026 20:45	Mammae	Russia	0.2
	27 Aug 2026 20:15	Kambaraiso	Russia	0.2
	27 Aug 2026 22:00	Slavnoye	Russia	0.1
	27 Aug 2026 21:45	Kompaneysk	Russia	0.1
	27 Aug 2026 21:45	Ryabinovka	Russia	0.1
	27 Aug 2026 21:45	Kastrikum	Russia	0.1

Disclaimer - Copyright
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.