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

30 Aug 2026 12 UTC

click on

to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

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	ECMWF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	94 km/h
Maximum storm surge	0.6 m (25 Aug 15:30 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
ECMWF Current	94 km/h	0.5 m	238 mm	0.5
ECMWF Overall	94 km/h	0.6 m	739 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

TOP

Wind

94 km/h

No people by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 30 Aug 2026 12:00 UTC (Overall situation)

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	25 Aug 2026 12:00	54	-	-	-	-	-	-	-
2	26 Aug 2026 00:00	58	-	-	-	-	-	-	-
3	26 Aug 2026 12:00	58	-	-	-	-	-	-	-
4	27 Aug 2026 00:00	61	-	-	-	-	-	-	-
5	27 Aug 2026 12:00	86	-	-	-	-	-	-	-
6	28 Aug 2026 00:00	72	-	-	-	-	-	-	-
7	28 Aug 2026 12:00	86	-	-	-	-	-	-	-
8	29 Aug 2026 00:00	90	-	-	-	-	-	-	-
9	29 Aug 2026 12:00	94	-	-	-	-	-	-	-
10	30 Aug 2026 00:00	94	-	-	-	-	-	-	-
11	30 Aug 2026 12:00	94	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

TOP

Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 30 Aug 2026 12:00 UTC (Overall situation)

Level	Country	Population
100-250 mm	Marshall Islands, Micronesia	87,187	+
	Marshall Islands	5,133
	Micronesia	81,707
	Other countries	346
50-100 mm	Russia, Marshall Islands, Micronesia	56,649	+
	Russia	6,252
	Marshall Islands	34,931
	Micronesia	15,430
	Other countries	35

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	25 Aug 2026 12:00	159	-	-	-	-	-	-	-
2	26 Aug 2026 00:00	175	-	-	-	-	-	-	-
3	26 Aug 2026 12:00	104	-	-	-	-	-	-	-
4	27 Aug 2026 00:00	130	-	-	-	-	-	-	-
5	27 Aug 2026 12:00	442	-	-	-	-	-	-	-
6	28 Aug 2026 00:00	417	-		-	-	-	-	-	Russia
7	28 Aug 2026 12:00	363	-	-	-	-	-	-	-
8	29 Aug 2026 00:00	193	-	-	-	-	-	-	-
9	29 Aug 2026 12:00	123	-		-	-	-	-	-	Marshall Islands
10	30 Aug 2026 00:00	143	-		-	-	-	-	-	Micronesia, Other countries
11	30 Aug 2026 12:00	238	-		-	-	-	-	-	Marshall Islands, Micronesia, Other countries

Impact estimation for the next 72h

TOP

StormSurge

0.6 m

The maximum Storm surge height is 0.6m in Rokko, Russia. This height is estimated for 25 Aug 2026 15:30 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

Estimations based on the bulletin of 30 Aug 2026 12:00 UTC (Overall situation)

Level	Country	Population
0.25 - 0.5 m	Russia	2,318

Storm Surge Exposed locations

Calculation based on the bulletin of 30 Aug 2026 12:00 UTC (Overall situation)

Level	Date (UTC)	Name	Country	Storm surge height (m)
	25 Aug 2026 15:30	Rokko	Russia	0.6
	25 Aug 2026 15:30	Mammae	Russia	0.6
	25 Aug 2026 15:30	Tayezhnyy	Russia	0.6
	25 Aug 2026 15:30	Lesozavodskiy	Russia	0.6
	25 Aug 2026 15:30	Dobroye	Russia	0.6
	25 Aug 2026 15:30	Okeanskiy	Russia	0.6
	25 Aug 2026 15:30	Odesskiy	Russia	0.6
	31 Aug 2026 03:15	Mataruzaru	Russia	0.5
	31 Aug 2026 03:15	Selivanovka	Russia	0.5
	31 Aug 2026 03:15	Sanjibotsu	Russia	0.5
	28 Aug 2026 13:30	Osenniy	Russia	0.4
	28 Aug 2026 13:30	Otlivnyy	Russia	0.4
	28 Aug 2026 13:30	Zolotoy	Russia	0.4
	28 Aug 2026 13:30	Chikkaporo	Russia	0.4
	28 Aug 2026 13:30	Kuybyshevo	Russia	0.4
	28 Aug 2026 13:30	Kasatka	Russia	0.4
	02 Sep 2026 08:30	Berezovka	Russia	0.4
	02 Sep 2026 08:30	Riyaushi	Russia	0.4
	31 Aug 2026 20:00	Reydovo	Russia	0.4
	31 Aug 2026 20:00	Rokubanchi	Russia	0.4
	31 Aug 2026 20:00	Higashirucharu	Russia	0.4
	02 Sep 2026 08:15	Iodnyy	Russia	0.4
	02 Sep 2026 08:15	Nov'	Russia	0.4
	02 Sep 2026 08:15	Mysovaya	Russia	0.4
	29 Aug 2026 15:00	Shamambe	Russia	0.4
	02 Sep 2026 08:15	Parusnoye	Russia	0.4
	28 Aug 2026 03:45	Sernozavodskiy	Russia	0.4
	29 Aug 2026 15:15	Sopochnyy	Russia	0.3
	29 Aug 2026 15:15	Sentyabrskiy	Russia	0.3
	28 Aug 2026 04:30	Kambaraiso	Russia	0.3
	29 Aug 2026 15:00	Rybaki	Russia	0.3
	29 Aug 2026 15:00	Chippuporo	Russia	0.3
	29 Aug 2026 15:00	Kurilsk	Russia	0.3
	29 Aug 2026 15:00	Yanketo	Russia	0.3
	29 Aug 2026 15:00	Kitovyy	Russia	0.3
	29 Aug 2026 15:00	Matoiso	Russia	0.3
	28 Aug 2026 04:15	Sokitani	Russia	0.3
	28 Aug 2026 13:30	Astaurova	Russia	0.3
	28 Aug 2026 04:15	Slavnoye	Russia	0.3
	28 Aug 2026 04:30	Podgornyy	Russia	0.3
	30 Aug 2026 18:00	Medvezhye	Russia	0.3
	29 Aug 2026 15:30	Kompaneysk	Russia	0.3
	29 Aug 2026 15:30	Ryabinovka	Russia	0.3
	29 Aug 2026 16:00	Kastrikum	Russia	0.2
	29 Aug 2026 15:30	Kitoboynyy	Russia	0.2
	29 Aug 2026 15:30	Kostochko	Russia	0.2
	29 Aug 2026 16:00	Kraternyy	Russia	0.2
	30 Aug 2026 09:45	Ronkiti	Micronesia	0.2
	30 Aug 2026 09:45	Palikir	Micronesia	0.2
	30 Aug 2026 09:45	Kolonia	Micronesia	0.2
	30 Aug 2026 09:45	Lot	Micronesia	0.2
	30 Aug 2026 09:45	Metalanim	Micronesia	0.2
	29 Aug 2026 02:30	Aleutka	Russia	0.2
	30 Aug 2026 10:45	Kaven	Marshall Islands	0.2
	31 Aug 2026 22:45	Kuma	Kiribati	0.1
	01 Sep 2026 12:45	Wotje	Marshall Islands	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.