Issued at 800 AM EDT Sun Sep 28 2025
000 WTNT34 KNHC 281152 TCPAT4 BULLETIN Tropical Depression Nine Intermediate Advisory Number 7A NWS National Hurricane Center Miami FL AL092025 800 AM EDT Sun Sep 28 2025 ...DEPRESSION MOVING SLOWLY NORTH-NORTHWESTWARD... ...HEAVY RAINS CONTINUE OVER PORTIONS OF EASTERN CUBA AND THE BAHAMAS, WITH WINDS SOON INCREASING OVER THE BAHAMAS... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...23.2N 77.3W ABOUT 285 MI...460 KM NW OF THE EASTERN TIP OF CUBA ABOUT 100 MI...160 KM WSW OF THE CENTRAL BAHAMAS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Central Bahamas, including Cat Island, the Exumas, Long Island, Rum Cay, and San Salvador * Portions of the northwestern Bahamas, including Eleuthera, New Providence, the Abacos, Berry Islands, Andros island, and Grand Bahama Island A Tropical Storm Watch is in effect for... * East coast of Florida from the Palm Beach/Martin County Line to the Flagler/Volusia County Line A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in the Bahamas and along the southeast coast of the United States from Florida to North Carolina should monitor the progress of this system. Additional watches or warnings could be required later today. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Depression Nine was located near latitude 23.2 North, longitude 77.3 West. The depression is moving toward the north-northwest near 7 mph (11 km/h). A faster motion to the north-northwest is expected to begin later today and continue through Monday. On the forecast track, the center of the system is expected to move across the central and northwestern Bahamas later today and tonight and approach the southeast U.S. coast early this week. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Strengthening is expected during the next few days, and the system is forecast to become a tropical storm later today and a hurricane by late Monday or Tuesday. The minimum central pressure estimated by NOAA G-IV dropsonde data is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Depression Nine can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC. WIND: Tropical storm conditions are expected in the central Bahamas beginning later today and in the northwestern Bahamas late this afternoon. Tropical storm conditions are possible in the watch area along the east coast of Florida on Monday. RAINFALL: Tropical Depression Nine is expected to produce additional rainfall of 4 to 8 inches across eastern Cuba and 6 to 12 inches across the northwest Bahamas through Tuesday. This rainfall will likely produce flash and urban flooding. Mudslides are also possible in areas of higher terrain across eastern Cuba. Storm total rainfall amounts of 2 to 4 inches with local maxima of 7 inches are expected into Wednesday morning across portions of the coastal Carolinas. This rainfall could result in flash, urban, and river flooding. Changes in the forecast track could result in further adjustments to these rainfall totals. For a complete depiction of forecast rainfall and flash flooding associated with Tropical Depression Nine, please see the National Weather Service Storm Total Rainfall Graphic, available at hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at4.shtml?ero STORM SURGE: A storm surge will raise water levels by as much as 1 to 3 feet above ground level along the immediate coast in areas of onshore winds in the northwestern Bahamas. Near the coast, the surge will be accompanied by large waves. SURF: Swells generated by this system and Hurricane Humberto will affect portions of the Bahamas this weekend, and spread to portions of the southeast U.S. coast early this week. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. A depiction of rip current risk for the United States can be found at: hurricanes.gov/graphics_at4.shtml?ripCurrents NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Papin
NHC Atlantic
