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Potential Tropical Cyclone Six Public Advisory Number 1A
2021-08-10 01:30:57| National Hurricane Center (Atlantic)
Issued at 800 PM AST Mon Aug 09 2021 000 WTNT31 KNHC 092330 TCPAT1 BULLETIN Potential Tropical Cyclone Six Intermediate Advisory Number 1A NWS National Hurricane Center Miami FL AL062021 800 PM AST Mon Aug 09 2021 ...DISTURBANCE NEARING THE LEEWARD ISLANDS... ...HEAVY RAINS AND GUSTY WINDS EXPECTED THERE OVERNIGHT... SUMMARY OF 800 PM AST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...14.7N 60.1W ABOUT 90 MI...145 KM ESE OF DOMINICA ABOUT 135 MI...220 KM SE OF GUADELOUPE MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 15 MPH...24 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 Watch is in effect for... * Martinique and Guadeloupe * Dominica * Saba and St. Eustatius * Puerto Rico, including Culebra and Vieques * U.S. Virgin Islands * Dominican Republic on the south coast from Punta Palenque eastward and the entire northern coast to the Dominican Republic/Haiti border. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 PM AST (0000 UTC), the disturbance was centered near latitude 14.7 North, longitude 60.1 West. The system is moving toward the west-northwest near 15 mph (24 km/h) and this general motion is expected to continue during the next few days. On the forecast track, the disturbance is expected to move across the southern Leeward Islands later tonight, pass near or over the U.S. Virgin Islands and Puerto Rico late Tuesday and Tuesday night, and be near or over Hispaniola on Wednesday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Gradual strengthening is forecast during the next day or two and the disturbance is expected to become a tropical storm overnight. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. The estimated minimum central pressure based on surface observations is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Six 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: The potential tropical cyclone is expected to produce the following rainfall amounts: Over the Leeward Islands, Virgin Islands, and Puerto Rico...2 to 4 inches, with isolated amounts of 6 inches. This rainfall could lead to flash, urban, and small stream flooding and potential mudslides across the U.S. Virgin Islands and Puerto Rico. Over the northern Windward Islands...1 to 3 inches. Over the Dominican Republic...3 to 6 inches. WIND: Tropical storm conditions are possible within the watch area in the Lesser Antilles later tonight, and are also possible within the watch area in the U.S. Virgin Islands and Puerto Rico beginning Tuesday afternoon. Tropical storm conditions are possible within the watch area in the Dominican Republic beginning early Wednesday. SURF: Swells generated by the disturbance are affecting portions of the Leeward Islands. These swells are expected to spread across the U.S. Virgin Islands and Puerto Rico on Tuesday and across portions of Hispaniola on Wednesday, and they could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Cangialosi
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