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Guam, Northern Mariana Islands (USA) - Tropical cyclone SINLAKU, update (GDACS, NOAA Guam, FEMA, JTWC) (ECHO Daily Flash of 13 April 2026)

  • Over 11-12 April, tropical cyclone SINLAKU continued moving north-west over the western North Pacific Ocean toward the Northern Mariana Islands and Guam, further strengthening. On 13 April at 00:00 UTC, its centre was located over the ocean approximately 455 km south-east of Guam, with maximum sustained winds of 287 km/h (Cat. 5 hurricane).
  • SINLAKU is forecast to pass between the Saipan and Tinian islands (north-central Northern Mariana Islands) on 14 April around 12:00 UTC, with maximum sustained winds up to 231 km/h (Cat. 4 hurricane).
  • According to the Federal Emergency Management Agency (FEMA), as of 13 April, seven shelters are in force as preventive measures across the Northern Mariana Islands.
  • Over the next 6 days, very heavy rainfall, strong winds and storm surges are forecast over most of the Northern Mariana Islands, while heavy rainfall is forecast over Guam for the next 4 days.