Overall Red Tropical Cyclone for SINLAKU-26 in Guam from 09 Apr 2026 00:00 UTC to 10 Apr 2026 12:00 UTC

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Overall Red Tropical Cyclone for SINLAKU-26

in Guam

Event summary

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

GDACS ID	TC 1001270
Name	SINLAKU-26
From - To	09 Apr - 10 Apr
Exposed countries	Guam
Exposed population	180 thousand in Category 1 or higher
Maximum wind speed	213 km/h Category 4
Maximum storm surge	n.a.
Vulnerability	Medium (Guam)

GDACS Score

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	Wind	Storm surge	Rainfall	GDACS score
GDACS JTWC	213 km/h	n.a.	n.a.	2.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF	191 km/h	0.6 m	824 mm	2.5
GFS	198 km/h	0.8 m	780 mm	2.5
ECMWF	148 km/h	0.5 m	724 mm	0.5

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

Virtual OSOCC

Meteo assessment

Satellite products

Analytical products

Guam, Northern Mariana Islands (USA) - Tropical cyclone SINLAKU (ECHO 10 Apr 2026)Fri, 10 Apr 2026 10:15

A new tropical cyclone named SINLAKU formed over the western North Pacific Ocean on 9 April and started moving north-west toward Guam and the far southern Northern Mariana Islands as a tropical storm. On 10 April at 0.00 UTC its centre was located over the ocean approximately 885 km south-east of Guam, with maximum sustained winds of 74 km/h.
SINLAKU is forecast to continue moving northwestward over the ocean, strengthening, and to make landfall over northern Guam on 14 April in the morning (UTC), with maximum sustained winds up to 194 km/h (Cat. 3 hurricane).
Heavy rainfall, strong winds and storm surges are forecast over Guam and the central-southern Northern Mariana Islands over 13-15 April.

Detailed event map. European Union, 2026. 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.

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Estimated casualties (PAGER)

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Exposed population

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For this events, GDACS has links to information from the following sources: EC-JRC (40), INFORM (2), (1),

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