WTPQ32 PGUM 161550 TCPPQ2 BULLETIN Tropical Storm Champi (29W) Advisory Number 9 National Weather Service Tiyan GU WP292026 150 AM ChST Sat Oct 17 2026 ...TROPICAL STORM CHAMPI MOVING WEST TOWARD GUAM... CHANGES WITH THIS ADVISORY -------------------------- None. WATCHES AND WARNINGS -------------------- A Typhoon Warning remains in effect for Guam, Rota, and the adjacent waters. A Tropical Storm Warning remains in effect for Tinian, Saipan, and the adjacent waters. A Typhoon Watch remains in effect for Tinian and Saipan in the Northern Marianas, and the adjacent coastal waters. A Typhoon Warning means that typhoon conditions, including winds of 74 mph or more, are expected by Sunday morning, with tropical storm force winds arriving tonight. A Tropical Storm Warning in conjunction with a Typhoon Watch means that tropical storm winds of between 39 and 73 mph are expected by tonight, and typhoon force winds are possible if the track of Tropical Storm Champi shifts sufficiently northward. SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION ----------------------------------------------- Location...11.6N 150.8E About 220 miles north-northeast of Ulul About 295 miles north-northwest of Chuuk About 415 miles east-southeast of Rota About 420 miles southeast of Tinian About 420 miles southeast of Saipan About 425 miles east-southeast of Guam About 530 miles southeast of Alamagan About 560 miles southeast of Pagan About 600 miles southeast of Agrihan About 875 miles east of Yap Maximum sustained winds...70 mph Present movement...west...275 degrees at 15 mph DISCUSSION AND OUTLOOK ---------------------- At 100 AM CHST...1500 UTC...the center of Tropical Storm Champi was located near Latitude 11.6 degrees North and Longitude 150.8 degrees East. Champi is moving west at 15 mph. It is expected to turn slightly toward the west-northwest with little change in forward speed through Sunday. This general forecast track would bring Champi over or close to Guam Sunday morning, possibly as a category 3 typhoon. Maximum sustained winds have increased to 70 mph. Champi is forecast to intensify through Sunday, likely becoming a typhoon later today. Tropical storm force winds extend outward from the center up to 105 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. $$ Stanko