WTPQ31 PGUM 240319 TCPPQ1 BULLETIN Tropical Depression 12W Advisory Number 2 National Weather Service Tiyan GU WP122025 119 PM ChST Thu Jul 24 2025 ...TD 12W WEST OF ROTA MOVING NORTHWEST... CHANGES WITH THIS ADVISORY -------------------------- None. WATCHES AND WARNINGS -------------------- A Tropical Storm Watch remains in effect for Rota, Tinian, and Saipan and coastal waters, as well as for Agrihan, Pagan, Alamagan. A Tropical Storm Watch means that tropical storm conditions, including winds of 39 mph or more are possible as early as Friday morning, especially if 12W intensifies quicker than currently expected. SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION ----------------------------------------------- Location...14.1N 143.6E About 90 miles west-northwest of Guam About 110 miles west of Rota About 150 miles west-southwest of Tinian About 160 miles west-southwest of Saipan About 285 miles south-southwest of Alamagan About 315 miles south-southwest of Pagan About 350 miles south-southwest of Agrihan Maximum sustained winds...35 mph Present movement...northwest...320 degrees at 9 mph DISCUSSION AND OUTLOOK ---------------------- At 100 PM CHST...0300 UTC...the center of Tropical Depression 12W was located near Latitude 14.1 degrees North and Longitude 143.6 degrees East. Tropical Depression 12W is moving northwest at 9 mph. It is expected to make a turn toward the north with a slight decrease in forward speed through Friday, as it intensifies into a tropical storm. Tropical Depression 12W is currently west of Rota and will continue to gradually move away from the lower Marianas along a general northerly course. However, it remains possible for tropical storm force winds to develop, mainly across the far western waters of Rota, Tinian, Saipan, and locations further north. Maximum sustained winds have increased to 35 mph. Tropical Depression 12W is forecast to maintain this intensity through tonight, before strengthening further to a tropical storm Friday. NEXT ADVISORY ------------- An intermediate advisory will be issued by the National Weather Service at 500 PM ChST, followed by the next scheduled advisory at 800 PM ChST. $$ Doll/Aydlett