WTPQ31 PGUM 141856 TCPPQ1 BULLETIN Typhoon Sinlaku (04W) Intermediate Advisory Number 23A National Weather Service Tiyan GU WP042026 456 AM ChST Wed Apr 15 2026 ...TYPHOON SINLAKU MOVING NORTHWEST... CHANGES WITH THIS ADVISORY -------------------------- None. WATCHES AND WARNINGS -------------------- A Typhoon Warning remains in effect for Rota, Tinian, and Saipan. A Typhoon Warning remains in effect for Alamagan, Pagan, and Agrihan. A Tropical Storm Warning and Typhoon Watch remain in effect for Guam. SUMMARY OF 500 AM CHST...1900 UTC...INFORMATION ----------------------------------------------- Location...15.2N 145.4E About 20 miles northwest of Tinian About 25 miles west-northwest of Saipan About 70 miles north of Rota About 125 miles north-northeast of Guam About 170 miles south of Alamagan About 205 miles south of Pagan About 245 miles south of Agrihan Maximum sustained winds...145 mph Present movement...northwest...325 degrees at 5 mph DISCUSSION AND OUTLOOK ---------------------- At 500 AM CHST...1900 UTC...the center of Typhoon Sinlaku was located near Latitude 15.2 degrees North and Longitude 145.4 degrees East. Sinlaku is moving northwest at 5 mph. It is expected to make a slight turn toward the north-northwest with little change in forward speed through Thursday. Typhoon Sinlaku is pulling away to the northwest from Tinian and Saipan and will begin to pass through the northern CNMI just west of the islands of Alamagan, Pagan, and Agrihan, through the latter half of the week. Maximum sustained winds remain at 145 mph. Sinlaku is forecast to weaken through tonight. Typhoon force winds extend outward from the center up to 75 miles. Tropical storm force winds extend outward from the center up to 265 miles. NEXT ADVISORY ------------- The next scheduled advisory will be issued by the National Weather Service at 800 AM ChST this morning followed by an intermediate advisory at 1100 AM ChST later this morning. $$ Schank