WTPQ32 PGUM 010719 TCPPQ2 BULLETIN Tropical Storm Choi-wan (26W) Intermediate Advisory Number 5A National Weather Service Tiyan GU WP262026 519 PM ChST Thu Oct 1 2026 ...TROPICAL STORM CHOI-WAN MOVING WEST-NORTHWEST TOWARD ALAMAGAN... CHANGES WITH THIS ADVISORY -------------------------- None. WATCHES AND WARNINGS -------------------- A Tropical Storm Warning a typhoon watch remain in effect for Agrihan, Pagan and Alamagan in the CNMI. A Tropical Storm Warning remains in effect for Tinian and Saipan in the CNMI. A Typhoon Watch means that typhoon conditions, including winds of 74 mph or more, are possible, but dependent on a faster intensification or an eastward shift in the track. The Tropical Storm Warning means that tropical storm conditions are expected within 24 hours. SUMMARY OF 400 PM CHST...0600 UTC...INFORMATION ----------------------------------------------- Location...16.9N 146.8E About 80 miles southeast of Alamagan About 85 miles east-northeast of Anatahan About 110 miles southeast of Pagan About 140 miles north-northeast of Saipan About 150 miles south-southeast of Agrihan About 155 miles north-northeast of Tinian About 215 miles north-northeast of Rota About 270 miles north-northeast of Guam Maximum sustained winds...45 mph Present movement...west-northwest...280 degrees at 13 mph DISCUSSION AND OUTLOOK ---------------------- At 400 PM CHST...0600 UTC...the center of Tropical Storm Choi-wan was located near Latitude 16.9 degrees North and Longitude 146.8 degrees East. Choi-wan is moving west-northwest at 13 mph. It is expected to make a slight turn toward the west with a decrease in forward speed through Friday Choi-wan is also expected to continue intensifying, likely becoming a typhoon by friday afternoon, when it'll make a turn more to the north. Maximum sustained winds remain at 45 mph. Choi-wan is forecast to intensify through Friday. Tropical storm force winds extend outward from the center up to 140 miles to the northeast and up to 105 miles elsewhere. NEXT ADVISORY ------------- The next scheduled advisory will be issued by the National Weather Service at 800 PM ChST this evening, followed by an intermediate advisory at 1100 PM ChST. $$ Doll