Overall Green Tropical Cyclone alert for KROSA-25 in Japan, Northern Mariana Islands from 23 Jul 2025 18:00 UTC to 28 Jul 2025 00:00 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 alert Tropical Cyclone for KROSA-25

in Japan, Northern Mariana Islands

Event summary

Tropical Cyclone KROSA-25 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID	TC 1001184
Name	KROSA-25
From - To	23 Jul - 03 Aug
Exposed countries	Japan, Northern Mariana Islands
Exposed population	No people in Category 1 or higher
Maximum wind speed	148 km/h Category 1
Maximum storm surge	0.1 m (26 Jul 13:00 UTC)
Vulnerability	Medium (Northern Mariana Is.)

GDACS Score

For more info on GDACS alert score click here.

	Wind	Storm surge	Rainfall	GDACS score
GDACS JTWC	148 km/h	0.2 m	n.a.	0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF	148 km/h	1.1 m	937 mm	0.5
GFS	119 km/h	1.1 m	876 mm	0.5
ECMWF	97 km/h	1.2 m	514 mm	0.5

Maximum expected impact (wind, storm surge and rainfall) using different data sources.

Virtual OSOCC

Meteo assessment

Satellite products

Analytical products

Detailed event map. European Union, 2025. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Analytical products

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (40), (2), INFORM (2),

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