Overall Green Tropical Cyclone for ETAU-26
Off-shore
31 Aug 2026 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone ETAU-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 148 km/h
Maximum storm surge 0.5 m (28 Aug 13:15 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 104 km/h 0.3 m 238 mm 0.5
GFS Overall 148 km/h 0.5 m 465 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 31 Aug 2026 00:00 UTC (Overall situation)

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert 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
GREEN 1 27 Aug 2026 00:00 101 - - - - - - -
GREEN 2 27 Aug 2026 06:00 97 - - - - - - -
GREEN 3 27 Aug 2026 12:00 97 - - - - - - -
GREEN 4 27 Aug 2026 18:00 119 - - - - - - -
GREEN 5 28 Aug 2026 00:00 101 - - - - - - -
GREEN 6 28 Aug 2026 06:00 119 - - - - - - -
GREEN 7 28 Aug 2026 12:00 144 - - - - - - -
GREEN 8 28 Aug 2026 18:00 122 - - - - - - -
GREEN 9 29 Aug 2026 00:00 122 - - - - - - -
GREEN 10 29 Aug 2026 06:00 148 - - - - - - -
GREEN 11 29 Aug 2026 12:00 137 - - - - - - -
GREEN 12 29 Aug 2026 18:00 140 - - - - - - -
GREEN 13 30 Aug 2026 00:00 133 - - - - - - -
GREEN 14 30 Aug 2026 06:00 119 - - - - - - -
GREEN 15 30 Aug 2026 12:00 104 - - - - - - -
GREEN 16 30 Aug 2026 18:00 79 - - - - - - -
GREEN 17 31 Aug 2026 00:00 104 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall

465 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 31 Aug 2026 00:00 UTC (Overall situation)
LevelCountryPopulation 
100-250 mmMarshall Islands, Micronesia42,063
+
Marshall Islands47 
Micronesia41,760 
Other countries255 
50-100 mmMarshall Islands, Micronesia86,785
+
Marshall Islands38,136 
Micronesia48,534 
Other countries114 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 27 Aug 2026 00:00 133 - - - - - - -
Blue 2 27 Aug 2026 06:00 147 - - - - - - -
Blue 3 27 Aug 2026 12:00 203 - - - - - - -
Blue 4 27 Aug 2026 18:00 201 - - - - - - -
Blue 5 28 Aug 2026 00:00 140 - - - - - - -
Blue 6 28 Aug 2026 06:00 166 - - - - - - -
Blue 7 28 Aug 2026 12:00 113 - - - - - - -
Blue 8 28 Aug 2026 18:00 148 - - - - - - -
Blue 9 29 Aug 2026 00:00 96 - - - - - - -
Blue 10 29 Aug 2026 06:00 146 - - - - - - -
Blue 11 29 Aug 2026 12:00 121 - - - - - - -
Blue 12 29 Aug 2026 18:00 57 - - - - - - -
Blue 13 30 Aug 2026 00:00 79 - - - - - - -
Blue 14 30 Aug 2026 06:00 111 -
- - - - - Other countries, Micronesia
Blue 15 30 Aug 2026 12:00 178 - - - - - - -
Blue 16 30 Aug 2026 18:00 153 - - - - - - -
Blue 17 31 Aug 2026 00:00 238 -
- - - - - Micronesia, Other countries




Impact estimation for the next 72h
TOP

StormSurge

0.5 m

The maximum Storm surge height is  0.5m in Podgornyy, Russia. This height is estimated for 28 Aug 2026 13:15 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 31 Aug 2026 00:00 UTC (Overall situation)
LevelCountryPopulation 
0.25 - 0.5 mRussia30 

Storm Surge Exposed locations

Calculation based on the bulletin of 31 Aug 2026 00:00 UTC (Overall situation)
    
Level Date (UTC) Name Country Storm surge height (m)
28 Aug 2026 13:15 Podgornyy Russia  0.5
28 Aug 2026 14:00 Kompaneysk Russia  0.4
28 Aug 2026 14:00 Ryabinovka Russia  0.4
28 Aug 2026 14:00 Kastrikum Russia  0.4
28 Aug 2026 13:00 Medvezhye Russia  0.4
29 Aug 2026 02:00 Kraternyy Russia  0.3
29 Aug 2026 02:30 Aleutka Russia  0.3
02 Sep 2026 13:15 Severgino Russia  0.3
02 Sep 2026 14:00 Makarovka Russia  0.3
28 Aug 2026 13:45 Kitoboynyy Russia  0.3
28 Aug 2026 13:45 Kostochko Russia  0.3
29 Aug 2026 14:30 Onekotan Russia  0.3
02 Sep 2026 20:30 Kolonia Micronesia  0.3
02 Sep 2026 20:30 Lot Micronesia  0.3
02 Sep 2026 20:30 Metalanim Micronesia  0.3
02 Sep 2026 13:45 Sarychevo Russia  0.3
30 Aug 2026 09:30 Kaven Marshall Islands  0.2
02 Sep 2026 21:30 Wotje Marshall Islands  0.2
01 Sep 2026 07:45 Ronkiti Micronesia  0.2
01 Sep 2026 07:45 Palikir Micronesia  0.2