000 WTNT31 KNHC 110258 TCPAT1 BULLETIN Tropical Storm Fred Advisory Number 6 NWS National Hurricane Center Miami FL AL062021 1100 PM AST Tue Aug 10 2021 ...TROPICAL STORM FRED DEVELOPS JUST SOUTH OF PUERTO RICO... ...HEAVY RAINS AND GUSTY WINDS SPREADING ACROSS PUERTO RICO OVERNIGHT AND OVER HISPANIOLA ON WEDNESDAY... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...17.4N 66.8W ABOUT 45 MI...70 KM SSW OF PONCE PUERTO RICO ABOUT 215 MI...350 KM ESE OF SANTO DOMINGO DOMINICAN REPUBLIC MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...1009 MB...29.80 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Puerto Rico, including Culebra and Vieques * U.S. Virgin Islands * Dominican Republic on the south coast from Punta Palenque eastward and on the north coast from Cabo Frances Viejo eastward A Tropical Storm Watch is in effect for... * Dominican Republic on the north coast from Cabo Frances Viejo to the Dominican Republic/Haiti border * Haiti from the northern border with the Dominican Republic to Gonaives * Turks and Caicos Islands * Southeastern Bahamas A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in Haiti and the Bahamas, as well as in eastern and central Cuba, should monitor the progress of this system. 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 Storm Fred was located by the San Juan NOAA Doppler weather radar near latitude 17.4 North, longitude 66.8 West. Fred is moving toward the west near 17 mph (28 km/h) and this general motion is expected to continue tonight. A turn back toward the west-northwest is forecast to occur early Wednesday, with a west-northwestward motion continuing during the next few days. On the forecast track, Fred is expected to pass near the southern coast of Puerto Rico tonight and early Wednesday, be near or over Hispaniola on Wednesday, and be near the southeastern Bahamas and the Turks and Caicos Islands on Thursday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Slight strengthening is forecast overnight before Fred reaches eastern Dominican Republic Wednesday morning. Some weakening is likely while the system interacts with Hispaniola on Wednesday. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. A wind gust to 41 mph (66 km/h) was recently measured by a Weatherflow observing site in Las Mareas along the south-central coast of Puerto Rico. The estimated minimum central pressure is 1009 mb (29.80 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Fred can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC and on the web at www.hurricanes.gov/graphics_at1.shtml?key_messages. RAINFALL: Fred is expected to produce the following rainfall amounts: Over the Leeward Islands, Virgin Islands, Puerto Rico, and the Dominican Republic...2 to 4 inches, with isolated maximum totals of 6 inches. Heavy rainfall could lead to flash, urban, and small stream flooding, along with possible rapid river rises and the potential for mudslides across the U.S. Virgin Islands, Puerto Rico, and the Dominican Republic. Over Haiti, the Turks and Caicos, eastern Bahamas, and eastern Cuba...1 to 3 inches with isolated maximum totals of 5 inches. WIND: Tropical storm conditions are expected in the warning areas in the U.S. Virgin Islands and Puerto Rico during the next several hours, and in the warning area in the Dominican Republic by early Wednesday. Tropical storm conditions are possible elsewhere along the northern coasts of the Dominican Republic, northern Haiti, the Turks and Caicos, and the southeastern Bahamas beginning late Wednesday. SURF: Swells generated by Tropical Storm Fred are affecting portions of the Leeward Islands. These swells are expected to spread across the U.S. Virgin Islands and Puerto Rico today and reach portions of Hispaniola on Wednesday, where they could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 200 AM AST. Next complete advisory at 500 AM AST. $$ Forecaster Stewart