Public Tropical Cyclone Advisory
Issued by NWS
Issued by NWS
350 WTPQ32 PGUM 011503 TCPPQ2 BULLETIN Tropical Storm Choi-wan (26W) Advisory Number 7 National Weather Service Tiyan GU WP262026 103 AM ChST Fri Oct 2 2026 ...TROPICAL STORM CHOI-WAN MOVING WEST THROUGH THE NORTHERN MARIANAS, SOUTH OF ALAMAGAN... CHANGES WITH THIS ADVISORY -------------------------- None. WATCHES AND WARNINGS -------------------- A Tropical Storm Warning remains in effect for Tinian, Saipan, Alamagan, Pagan, and Agrihan in the CNMI. A Typhoon Watch remains in effect for Alamagan, Pagan, and Agrihan in the CNMI. A Tropical Storm Warning means that tropical storm conditions are expected within 24 hours. A Typhoon Watch means that typhoon conditions, including winds of 74 mph or more, are possible within 48 hours. SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION ----------------------------------------------- Location...16.6N 145.5E About 20 miles north of Anatahan About 75 miles south of Alamagan About 105 miles north of Saipan About 105 miles south of Pagan About 110 miles north of Tinian About 150 miles south of Agrihan About 170 miles north of Rota About 220 miles north-northeast of Guam Maximum sustained winds...60 mph Present movement...west...260 degrees at 12 mph DISCUSSION AND OUTLOOK ---------------------- At 100 AM CHST...1500 UTC...the center of Tropical Storm Choi-wan was located near Latitude 16.6 degrees North and Longitude 145.5 degrees East. Choi-wan is moving west at 12 mph. It is expected to slow as it continues westward early this morning, passing to the south of Alamagan. Choi-wan is then expected to make a turn toward the northwest, then north with a decrease in forward speed through Friday. Then, Choi-wan looks to gradually turn to the north-northeast late Friday night through Saturday after it emerges west of the northern islands. Maximum sustained winds have increased to 60 mph. Choi-wan is forecast to intensify through Saturday, potentially becoming a typhoon Friday afternoon or evening. Tropical storm force winds extend outward from the center up to 125 miles. NEXT ADVISORY ------------- An intermediate advisory will be issued by the National Weather Service at 500 AM ChST followed by the next scheduled advisory at 800 AM ChST. $$ DeCou