BULLETIN Tropical Depression Seven Advisory Number 3 NWS National Hurricane Center Miami FL AL072021 1100 PM AST Fri Aug 13 2021 ...SMALL TROPICAL DEPRESSION CONTINUES MOVING QUICKLY WESTWARD... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...15.5N 53.8W ABOUT 540 MI...870 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Antigua and Barbuda, Anguilla, St. Kitts and Nevis, and Montserrat * Saba and Sint Eustatius * Sint Maarten * St. Martin and St. Barthelemy A Tropical Storm Watch is in effect for... * British Virgin Islands * U.S. Virgin Islands * Puerto Rico, including Vieques and Culebra 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 Leeward Islands, as well as the Dominican Republic, should monitor the progress of this system. Additional watches and warnings will likely be required for these areas tonight or on Saturday. 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 1100 PM AST (0300 UTC), the center of Tropical Depression Seven was located near latitude 15.5 North, longitude 53.8 West. The depression is moving toward the west near 21 mph (33 km/h). A motion towards the west or west-northwest with a gradual decrease in forward speed is expected during the next few days. On the forecast track, the center of the depression is forecast to move over the Leeward Islands Saturday night, over the Virgin Islands and Puerto Rico on Sunday, and then over the Dominican Republic on Monday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some strengthening is forecast during the next couple of days, and the depression is expected to become a tropical storm tomorrow. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Depression Seven can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. WIND: Tropical storm conditions are expected within the warning area over the Leeward Islands by Saturday night or early Sunday. Tropical storm conditions are possible over the Virgin Islands and Puerto Rico beginning on Sunday. RAINFALL: The system is expected to produce the following rainfall amounts Saturday into Monday: Over the northern Leeward Islands and Virgin Islands...3 to 6 inches. This rainfall may produce scattered areas of flash and urban flooding. Over Puerto Rico...3 to 6 inches. Heavy rainfall could lead to flash, urban, and small stream flooding as well as potential mudslides.
