Typhoon Sinlaku

Overview

Tropical Storm Sinlaku formed on April 8, 2026 near Chuuk in the Federated States of Micronesia, where it stalled for days, dumping unrelenting rain and producing wind gusts up to 89 km/h (55 mph) over Chuuk Lagoon. On April 10 the system was upgraded to typhoon status, becoming the first April typhoon in the western Pacific since 2022, before rapidly intensifying into a super typhoon on April 11. Guam Governor Lou Leon Guerrero declared a State of Emergency and requested a pre-landfall Emergency Disaster declaration from President Trump, while CNMI Governor David Apatang declared a State of Significant Emergency and ordered a territory-wide price freeze. The Guam Legislature unanimously passed a $25 million emergency funding bill, Joint Region Marianas set Tropical Cyclone Condition of Readiness (TCCOR) 2 at military installations, and the Guam Department of Education opened seven emergency shelters on April 12 as residents boarded up homes and GovGuam offices, schools, and courts closed. Forecasts call for Sinlaku to pass near or over Guam as a Category 3-4 typhoon with maximum sustained winds of 130 mph or greater, 15 to 20 inches of rainfall between April 12 and 15, damaging storm surge, and a high risk of flash flooding and mudslides across southern and central Guam. The American Red Cross pre-positioned relief supplies and volunteers, and FEMA and federal partners are coordinating pre-staged resources to support Guam, the CNMI, and affected communities in Micronesia.