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Tropical Storm Marco Public Advisory Number 18
2020-08-24 19:56:17| National Hurricane Center (Atlantic)
Issued at 100 PM CDT Mon Aug 24 2020 000 WTNT34 KNHC 241756 TCPAT4 BULLETIN Tropical Storm Marco Special Advisory Number 18 NWS National Hurricane Center Miami FL AL142020 100 PM CDT Mon Aug 24 2020 ...MARCO WEAKENS... ...GUSTY WINDS AND HEAVY RAINFALL STILL POSSIBLE OVER PORTIONS OF THE NORTHERN GULF COAST THROUGH TONIGHT... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...28.7N 88.6W ABOUT 40 MI...65 KM SE OF THE MOUTH OF THE MISSISSIPPI RIVER MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning and Storm Surge Warning for the U.S. Gulf Coast have been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. Gusty winds, heavy rainfall, and lingering coastal flooding are expected from Marco along portions of the Gulf Coast through this evening. For information on these hazards see products from your local National Weather Service office. Tropical cyclone wind and surge watches or warnings are likely to be issued for portions of the U.S. Gulf Coast later today for Tropical Storm Laura. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 100 PM CDT (1800 UTC), the center of Tropical Storm Marco was located near latitude 28.7 North, longitude 88.6 West. Marco is moving toward the northwest near 6 mph (9 km/h). A turn to the west-northwest is expected to occur by Tuesday, and this motion should continue until the system dissipates in a couple of days. Aircraft and satellite derived wind data indicate that maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Further weakening is expected, and Marco is forecast to become a tropical depression tonight and degenerate to a remnant low on Tuesday. Tropical-storm-force winds extend outward up to 80 miles (130 km) to the northeast of the center over water. A National Ocean Service weather station located on Petit Bois Island, Mississippi recently reported a wind gust to 35 mph (58 km/h). The latest minimum central pressure reported by aircraft reconnaissance is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Wind gusts to tropical storm force are possible over the coastal sections of southeastern Louisiana and Mississippi through this evening. RAINFALL: Marco is expected to produce total rainfall accumulations of 2 to 4 inches with isolated maximum amounts of 7 inches across portions of the northeast and north-central Gulf coast through Tuesday. This rainfall may result in areas of flash, urban and small stream flooding along the same area. SURF: Swells generated by Marco are likely to affect portions of the northern Gulf Coast for the next day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A couple of tornadoes are possible today into tonight across the Florida Panhandle, southern Georgia, southern Alabama, and southern Mississippi. NEXT ADVISORY ------------- Next complete advisory at 400 PM CDT. $$ Forecaster Latto
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Tropical Storm Laura Public Advisory Number 19A
2020-08-24 19:44:48| National Hurricane Center (Atlantic)
Issued at 200 PM EDT Mon Aug 24 2020 000 WTNT33 KNHC 241744 TCPAT3 BULLETIN Tropical Storm Laura Intermediate Advisory Number 19A NWS National Hurricane Center Miami FL AL132020 200 PM EDT Mon Aug 24 2020 ...CENTER OF LAURA PASSING NEAR CAYO LARGO CUBA.... ...HEAVY RAINFALL AND FLASH FLOODING CONTINUES OVER THE CAYMAN ISLANDS AND PORTIONS OF CUBA... SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...21.4N 81.6W ABOUT 15 MI...25 KM S OF CAYO LARGO ABOUT 80 MI...125 KM E OF THE ISLE OF YOUTH MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Little Cayman and Cayman Brac * Cuban provinces of Camaguey, Las Tunas, Ciego De Avila, Sancti Spiritus, Villa Clara, Cienfuegos, Matanzas, Mayabeque, La Habana, Artemisa, Pinar del Rio, and the Isle of Youth * Florida Keys from Craig Key to Key West * Dry Tortugas The Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 hours. Hurricane and Storm Surge Watches will likely be required for portions of the U.S. northwest Gulf coast area by this evening. 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 200 PM EDT (1800 UTC), the center of Tropical Storm Laura was located near latitude 21.4 North, longitude 81.6 West. Laura is moving toward the west-northwest near 20 mph (31 km/h), and this general motion with some decrease in forward speed is expected over the next day or so. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continue through Wednesday night. On the forecast track, the center of Laura will move over the Caribbean Sea just offshore of the southern coast of Cuba this afternoon, cross western Cuba this evening, and move into the southeastern Gulf of Mexico overnight. Laura is then forecast to move over the central and northwestern Gulf of Mexico Tuesday night and Wednesday, and approach the northwestern coast of the Gulf of Mexico Wednesday night. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Little change in strength is forecast today, but strengthening is expected when the storm moves over the Gulf of Mexico. Laura is foreast to become a hurricane on Tuesday, with additional strengthening forecast on Wednesday. Tropical-storm-force winds extend outward up to 175 miles (280 km) primarily to the northeast and east of the center. An elevated observing site at Sand Key located south of Key West, Florida, has recently reported a wind gust of 41 mph (67 km/h). A wind gust of 47 mph (76 km/h) has been observed at Santa Clara, Cuba, within the past few hours. The estimated minimum central pressure based on reconnaissance aircraft data is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. RAINFALL: Laura is expected to produce the following storm total rainfall accumulations through today: Jamaica, Cuba and the Cayman Islands: 4 to 6 inches, with maximum amounts of 10 inches. Across the Greater Antilles this heavy rainfall could lead to life-threatening flash and urban flooding, and the potential for mudslides. From Wednesday afternoon into Friday, Laura is expected to produce rainfall of 4 to 8 inches, with isolated maximum amounts of 12 inches across portions of the west-central U.S. Gulf Coast near the Texas and Louisiana border north into portions of the lower Mississippi Valley. This rainfall could cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. WIND: Tropical storm conditions are expected to spread westward within the warning area in Cuba through today. Tropical storm conditions are expected in Little Cayman and Cayman Brac today. Tropical storm conditions are also expected within the warning area in the middle and lower Florida Keys and the Dry Tortugas this afternoon and tonight. SURF: Swells generated by Laura are affecting portions of Hispaniola, Cuba, the central Bahamas, and the Florida Keys. Swells are expected to spread northward along portions of the west coast of Florida peninsula and the coast of the Florida panhandle on Tuesday and Tuesday night. These swells are likely to cause life- threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: An isolated tornado will be possible later today into tonight across the Florida Keys. NEXT ADVISORY ------------- Next complete advisory at 500 PM EDT. $$ Forecaster Brown
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Tropical Storm Marco Public Advisory Number 17
2020-08-24 16:42:50| National Hurricane Center (Atlantic)
Issued at 1000 AM CDT Mon Aug 24 2020 000 WTNT34 KNHC 241442 TCPAT4 BULLETIN Tropical Storm Marco Advisory Number 17 NWS National Hurricane Center Miami FL AL142020 1000 AM CDT Mon Aug 24 2020 ...MARCO CONTINUES TO PRODUCE HEAVY RAINFALL AND GUSTY WINDS ALONG PORTIONS OF THE NORTHERN GULF COAST... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...28.5N 88.5W ABOUT 55 MI...90 KM SE OF THE MOUTH OF THE MISSISSIPPI RIVER MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NNW OR 330 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning from west of Morgan City to Intracoastal City, Louisiana, has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for.... * Morgan City Louisiana to Ocean Springs Mississippi * Lake Borgne A Tropical Storm Warning is in effect for... * Morgan City to the Mississippi/Alabama border * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 6 to 18 hours. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Storm Marco was located near latitude 28.5 North, longitude 88.5 West. Marco is moving toward the north-northwest near 8 mph (13 km/h). A turn to the west-northwest is expected to occur by Tuesday, and this motion should continue until the system dissipates in a couple of days. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Steady weakening is forecast, and Marco is expected to weaken to a tropical depression tonight, and degenerate to a remnant low on Tuesday. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Morgan City LA to Ocean Springs MS, including Lake Borgne...2-4 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to start by this afternoon in portions of the warning area. RAINFALL: Marco is expected to produce total rainfall accumulations of 3 to 6 inches with isolated maximum amounts of 10 inches across portions of the northeast and north-central Gulf coast through Tuesday. This rainfall may result in areas of flash, urban and small stream flooding along the same area. SURF: Swells generated by Marco are likely to affect portions of the northern Gulf Coast for the next couple of days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A couple of tornadoes are possible today into tonight across the Florida Panhandle, southern Georgia, southern Alabama, and southern Mississippi. NEXT ADVISORY ------------- Next intermediate advisory at 100 PM CDT. Next complete advisory at 400 PM CDT. $$ Forecaster Latto
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Tropical Storm Laura Public Advisory Number 19
2020-08-24 16:40:36| National Hurricane Center (Atlantic)
Issued at 1100 AM EDT Mon Aug 24 2020 000 WTNT33 KNHC 241440 TCPAT3 BULLETIN Tropical Storm Laura Advisory Number 19 NWS National Hurricane Center Miami FL AL132020 1100 AM EDT Mon Aug 24 2020 ...LAURA CONTINUES WEST-NORTHWESTWARD OVER THE FAR NORTHWESTERN CARIBBEAN SEA.... ...HEAVY RAINFALL AND FLASH FLOODING CONTINUES OVER JAMAICA, THE CAYMAN ISLANDS, AND PORTIONS OF CUBA... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...21.2N 80.6W ABOUT 65 MI...105 KM ESE OF CAYO LARGO ABOUT 145 MI...230 KM E OF THE ISLE OF YOUTH MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Cuba has discontinued the Tropical Storm Warning for the provinces of Guantanamo, Santiago de Cuba, Holguin, and Granma. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Little Cayman and Cayman Brac * Cuban provinces of Camaguey, Las Tunas, Ciego De Avila, Sancti Spiritus, Villa Clara, Cienfuegos, Matanzas, Mayabeque, La Habana, Artemisa, Pinar del Rio, and the Isle of Youth * Florida Keys from Craig Key to Key West * Dry Tortugas The Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 hours. Hurricane and Storm Surge Watches will likely be required for portions of the U.S. northwest Gulf coast area by this evening. 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 AM EDT (1500 UTC), the center of Tropical Storm Laura was located near latitude 21.2 North, longitude 80.6 West. Laura is moving toward the west-northwest near 20 mph (31 km/h), and this general motion with some decrease in forward speed is expected over the next day or so. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continued through Wednesday night. On the forecast track, the center of Laura will move over the Caribbean Sea just offshore of the southern coast of Cuba this afternoon, cross western Cuba this evening, and move into the southeastern Gulf of Mexico overnight. Laura is then forecast to move over the central and northwestern Gulf of Mexico Tuesday night and Wednesday, and approach the northwestern coast of the Gulf of Mexico Wednesday night. NOAA and Air Force reconnaissance aircraft indicate that the maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Little change in strength is forecast today, but strengthening is expected when the storm moves over the Gulf of Mexico, and Laura is foreast to become a hurricane on Tuesday, with additional strengthening forecast on Wednesday. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. The estimated minimum central pressure based on reconnaissance aircraft data is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Laura is expected to produce the following storm total rainfall accumulations through today: Jamaica, Cuba and the Cayman Islands: 4 to 6 inches, with maximum amounts of 10 inches. Across the Greater Antilles this heavy rainfall could lead to life-threatening flash and urban flooding, and the potential for mudslides. From Wednesday afternoon into Friday, Laura is expected to produce rainfall of 4 to 8 inches, with isolated maximum amounts of 12 inches across portions of the west-central U.S. Gulf Coast near the Texas and Louisiana border north into portions of the lower Mississippi Valley. This rainfall could cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. WIND: Tropical storm conditions are expected to spread westward within the warning area in Cuba through today. Tropical storm conditions are expected in Little Cayman and Cayman Brac today. Tropical storm conditions are also expected within the warning area in the middle and lower Florida Keys and the Dry Tortugas this afternoon and tonight. SURF: Swells generated by Laura are affecting portions of Hispaniola, eastern and central Cuba, and the Bahamas. These swells are expected to spread across western Cuba and the Florida Keys today. Please consult products from your local weather office. TORNADOES: An isolated tornado will be possible later today into tonight across the Florida Keys. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM EDT. Next complete advisory at 500 PM EDT. $$ Forecaster Brown
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Tropical Storm Laura Public Advisory Number 18A
2020-08-24 13:55:14| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Mon Aug 24 2020 000 WTNT33 KNHC 241155 TCPAT3 BULLETIN Tropical Storm Laura Intermediate Advisory Number 18A NWS National Hurricane Center Miami FL AL132020 800 AM EDT Mon Aug 24 2020 ...NOAA AND AIR FORCE RECONNAISSANCE AIRCRAFT FIND LAURA MOVING WEST-NORTHWESTWARD JUST SOUTH OF THE COAST OF CENTRAL CUBA.... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...20.9N 79.7W ABOUT 125 MI...200 KM ESE OF CAYO LARGO ABOUT 205 MI...330 KM ESE OF THE ISLE OF YOUTH MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Little Cayman and Cayman Brac * Cuban provinces of Camaguey, Las Tunas, Holguin, Guantanamo, Santiago de Cuba, Granma, Ciego De Avila, Sancti Spiritus, Villa Clara, Cienfuegos, Matanzas, Mayabeque, La Habana, Artemisa, Pinar del Rio, and the Isle of Youth * Florida Keys from Craig Key to Key West * Dry Tortugas The Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 to 24 hours. Hurricane and Storm Surge Watches will likely be required for portions of the U.S. northwest Gulf coast area by this evening. 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 Storm Laura was located near latitude 20.9 North, longitude 79.7 West. Laura is moving toward the west-northwest near 21 mph (33 km/h), and this general motion with some decrease in forward speed is expected over the next couple of days. A turn toward the northwest is forecast by Wednesday. On the forecast track, the center of Laura will move over the Caribbean Sea just offshore the southern coast of Cuba today, and move into the southeastern Gulf of Mexico by early Tuesday morning. Laura is then forecast to move over the central and northwestern Gulf of Mexico Tuesday night and Wednesday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Gradual strengthening is expected, and Laura is forecast to become a hurricane by early Tuesday. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. The estimated minimum central pressure is 1000 mb (29.53 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Laura is expected to produce the following storm total rainfall accumulations through Tuesday: Jamaica and Cuba: 4 to 8 inches, with maximum amounts of 12 inches. Cayman Islands: 2 to 4 inches, maximum amounts of 6 inches. Florida Keys, Turks and Caicos Islands, and the Northwest Bahamas: 1 to 2 inches. Across the Greater Antilles this heavy rainfall could lead to life-threatening flash and urban flooding, and the potential for mudslides. From late Wednesday into Friday, Laura is expected to produce rainfall of 5 to 10 inches, with isolated maximum amounts of 15 inches across portions of the west-central U.S. Gulf Coast near the Texas and Louisiana border north into portions of the lower Mississippi Valley. This rainfall could cause widespread flash and urban flooding, small streams to overflow their banks, and the possibility of some minor river flooding across this region. WIND: Tropical storm conditions are expected to spread westward within the warning area in Cuba through today. Tropical storm conditions are expected in Little Cayman and Cayman Brac today. Tropical storm conditions are also expected within the warning area in the middle and lower Florida Keys and the Dry Tortugas this afternoon and tonight. SURF: Swells generated by Laura are affecting portions of Hispaniola, eastern Cuba, the southeastern Bahamas and the Turks and Caicos Islands. These swells are expected to spread across central and western Cuba, the central and northwestern Bahamas, and the Florida Keys today. Please consult products from your local weather office. TORNADOES: An isolated tornado will be possible later today into tonight across the Florida Keys. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Brown
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