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Potential Tropical Cyclone Six Public Advisory Number 3

2021-08-10 10:49:35| National Hurricane Center (Atlantic)

Issued at 500 AM AST Tue Aug 10 2021 000 WTNT31 KNHC 100849 TCPAT1 BULLETIN Potential Tropical Cyclone Six Advisory Number 3 NWS National Hurricane Center Miami FL AL062021 500 AM AST Tue Aug 10 2021 ...DISTURBANCE NOW IN THE NORTHEASTERN CARIBBEAN SEA... ...LIKELY TO BECOME A TROPICAL STORM TODAY... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...15.7N 62.2W ABOUT 65 MI...110 KM SW OF GUADELOUPE ABOUT 330 MI...535 KM ESE OF PONCE PUERTO RICO MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of the Bahamas has issued a Tropical Storm Watch for the Turks and Caicos Islands, and for the southeastern Bahamas, including the Acklins, Crooked Island, Long Cay, the Inaguas, Mayaguana, and the Ragged Islands. 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... * Martinique and Guadeloupe * Dominica * Saba and St. Eustatius * 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 within 36 hours. 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 500 AM AST (0900 UTC), the disturbance was centered near latitude 15.7 North, longitude 62.2 West. The system is moving toward the west-northwest near 17 mph (28 km/h) and this general motion is expected to continue during the next few days. On the forecast track, the disturbance is expected to pass near or over the U.S. Virgin Islands and Puerto Rico late today and tonight, and be near or over Hispaniola on Wednesday. Maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Gradual strengthening is forecast during the next day or so and the disturbance is expected to become a tropical storm later this morning. Some weakening is likely while the system interacts with Hispaniola on Wednesday. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. The estimated minimum central pressure 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. Heavy 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 for the next few hours. Tropical storm conditions are expected in the warning areas in the U.S. Virgin Islands and Puerto Rico later today, and 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 the disturbance are affecting portions of the Leeward Islands. These swells are expected to spread across the U.S. Virgin Islands and Puerto Rico today 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 intermediate advisory at 800 AM AST. Next complete advisory at 1100 AM AST. $$ Forecaster Pasch

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Potential Tropical Cyclone Six Forecast Advisory Number 3

2021-08-10 10:49:35| National Hurricane Center (Atlantic)

Issued at 0900 UTC TUE AUG 10 2021 000 WTNT21 KNHC 100849 TCMAT1 POTENTIAL TROPICAL CYCLONE SIX FORECAST/ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL AL062021 0900 UTC TUE AUG 10 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF THE BAHAMAS HAS ISSUED A TROPICAL STORM WATCH FOR THE TURKS AND CAICOS ISLANDS...AND FOR THE SOUTHEASTERN BAHAMAS... INCLUDING THE ACKLINS...CROOKED ISLAND...LONG CAY...THE INAGUAS... MAYAGUANA...AND THE RAGGED ISLANDS. 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... * MARTINIQUE AND GUADELOUPE * DOMINICA * SABA AND ST. EUSTATIUS * 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 WITHIN 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. POTENTIAL TROP CYCLONE CENTER LOCATED NEAR 15.7N 62.2W AT 10/0900Z POSITION ACCURATE WITHIN 50 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 15 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1010 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 15.7N 62.2W AT 10/0900Z AT 10/0600Z CENTER WAS LOCATED NEAR 15.3N 61.5W FORECAST VALID 10/1800Z 16.7N 64.6W...TROPICAL CYCLONE MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 0SE 0SW 40NW. FORECAST VALID 11/0600Z 17.9N 67.4W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 0SE 0SW 50NW. FORECAST VALID 11/1800Z 19.0N 70.1W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/0600Z 20.1N 72.6W...OVER WATER MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/1800Z 21.1N 74.9W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 13/0600Z 22.0N 77.0W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 0SE 0SW 50NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 14/0600Z 24.4N 80.8W MAX WIND 40 KT...GUSTS 50 KT. OUTLOOK VALID 15/0600Z 26.8N 83.1W MAX WIND 50 KT...GUSTS 60 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.7N 62.2W INTERMEDIATE PUBLIC ADVISORY...WTNT31 KNHC/MIATCPAT1...AT 10/1200Z NEXT ADVISORY AT 10/1500Z $$ FORECASTER PASCH

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Summary for Potential Tropical Cyclone Six (AT1/AL062021)

2021-08-10 07:44:07| National Hurricane Center (Atlantic)

...DISTURBANCE PASSING NEAR DOMINICA... ...HEAVY RAINS AND GUSTY WINDS CONTINUING TO SPREAD ACROSS THE LEEWARD ISLANDS... As of 2:00 AM AST Tue Aug 10 the center of Six was located near 15.5, -61.5 with movement WNW at 16 mph. The minimum central pressure was 1010 mb with maximum sustained winds of about 35 mph.

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Potential Tropical Cyclone Six Public Advisory Number 2A

2021-08-10 07:44:07| National Hurricane Center (Atlantic)

Issued at 200 AM AST Tue Aug 10 2021 000 WTNT31 KNHC 100543 TCPAT1 BULLETIN Potential Tropical Cyclone Six Intermediate Advisory Number 2A NWS National Hurricane Center Miami FL AL062021 200 AM AST Tue Aug 10 2021 ...DISTURBANCE PASSING NEAR DOMINICA... ...HEAVY RAINS AND GUSTY WINDS CONTINUING TO SPREAD ACROSS THE LEEWARD ISLANDS... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...15.5N 61.5W ABOUT 55 MI...90 KM S OF GUADELOUPE MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 16 MPH...26 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... * 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... * Martinique and Guadeloupe * Dominica * Saba and St. Eustatius * 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 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. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM AST (0600 UTC), the disturbance was centered near latitude 15.5 North, longitude 61.5 West. The system is moving toward the west-northwest near 16 mph (26 km/h) and this general motion is expected to continue during the next few days. On the forecast track, the disturbance is expected to continue passing near the southern Leeward Islands during the next few hours, pass near or over the U.S. Virgin Islands and Puerto Rico late today and tonight, and be near or over Hispaniola on Wednesday. Maximum sustained winds remain 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 later this morning. * 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 for the next several hours. Tropical storm conditions are expected in the warning areas in the U.S. Virgin Islands and Puerto Rico later today, and in the Dominican Republic by early Wednesday. Tropical storm conditions are possible elsewhere along the northern coasts of the Dominican Republic and northern Haiti beginning late 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 today 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 500 AM AST. $$ Forecaster Pasch

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