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Isaac - Caribbean Sea
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Tropical Storm Isaac Advisory Number 6 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Sat Sep 08 2018 ...ISAAC STRENGTHENING OVER THE EASTERN TROPICAL ATLANTIC... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.4N 37.5W ABOUT 1580 MI...2540 KM E OF THE WINDWARD ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 14.4 North, longitude 37.5 West. Isaac is moving toward the west near 8 mph (13 km/h). A westward motion with an increase in forward speed is expected during the next few days. Maximum sustained winds have increased to near 50 mph (85 km/h) with higher gusts. Additional strengthening is forecast during the next few days, and Isaac is expected to become a hurricane by Monday. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Advisory Number 8 NWS National Hurricane Center Miami FL AL092018 1100 AM AST Sun Sep 09 2018 ...ISAAC STRENGTHENING OVER THE EASTERN TROPICAL ATLANTIC... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...14.3N 39.1W ABOUT 1470 MI...2370 KM E OF THE WINDWARD ISLANDS MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Tropical Storm Isaac was located near latitude 14.3 North, longitude 39.1 West. Isaac is moving toward the west near 9 mph (15 km/h) and is expected to accelerate during the next 36 hours. A westward motion is forecast to continue through the end of the week, with Isaac expected to move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday. Maximum sustained winds have increased to near 65 mph (100 km/h) with higher gusts. Additional strengthening is forecast, and Isaac is expected to become a hurricane later today or tonight. Weakening is anticipated to begin by the middle of the week. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Hurricane Isaac Advisory Number 10 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Sun Sep 09 2018 ...ISAAC BECOMES THE FIFTH HURRICANE OF THE 2018 ATLANTIC SEASON... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.5N 41.6W ABOUT 1305 MI...2100 KM E OF THE WINDWARD ISLANDS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Lesser Antilles should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Hurricane Isaac was located near latitude 14.5 North, longitude 41.6 West. Isaac is moving toward the west near 14 mph (22 km/h) and it is expected to accelerate during the next 36 hours. A westward motion is forecast to continue through the end of the week, with Isaac expected to move across the Lesser Antilles and into the eastern Caribbean Sea Wednesday night or Thursday. Maximum sustained winds have increased to near 75 mph (120 km/h) with higher gusts. Additional strengthening is expected over the next day or two. Weakening is forecast to begin by the middle of the week as Isaac approaches the Lesser Antilles. Hurricane-force winds extend outward up to 10 miles (20 km) from the center and tropical-storm-force winds extend outward up to 45 miles (75 km). The estimated minimum central pressure is 993 mb (29.33 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Hurricane Isaac Advisory Number 13 NWS National Hurricane Center Miami FL AL092018 500 PM AST Mon Sep 10 2018 ...ISAAC CONTINUES TO SHOW LITTLE CHANGE IN STRENGTH... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.4N 45.0W ABOUT 1090 MI...1755 KM E OF THE LESSER ANTILLES MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Lesser Antilles should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Hurricane Isaac was located near latitude 14.4 North, longitude 45.0 West. Isaac is moving toward the west near 14 mph (22 km/h). A westward motion with a slight increase in forward speed is expected through the end of the week. On the forecast track, Isaac should move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday. Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Some strengthening is expected over the next day or two. Weakening is forecast to begin by the middle of the week as Isaac approaches the Lesser Antilles. Isaac is a small hurricane. Hurricane-force winds extend outward up to 10 miles (20 km) from the center and tropical-storm-force winds extend outward up to 45 miles (75 km). The estimated minimum central pressure is 993 mb (29.33 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Advisory Number 14 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Mon Sep 10 2018 ...ISAAC A LITTLE WEAKER... ...STILL EXPECTED TO BE AT OR NEAR HURRICANE STRENGTH WHEN IT APPROACHES THE LEEWARD ISLANDS LATER THIS WEEK... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.5N 46.9W ABOUT 960 MI...1550 KM E OF THE LESSER ANTILLES MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Lesser Antilles should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 14.5 North, longitude 46.9 West. Isaac is moving toward the west near 16 mph (26 km/h). This general motion is expected to continue through the end of the week. On the forecast track, Isaac should move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday. The maximum sustained winds have decreased to near 70 mph (110 km/h) with higher gusts. Little change in strength is forecast during the next few days, but Isaac is forecast to be at or near hurricane strength as it approaches the Lesser Antilles later this week. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 997 mb (29.44 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts near 6 inches across the Leeward Islands late this week, with 1 to 2 inches anticipated across the Windward Islands. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 16A NWS National Hurricane Center Miami FL AL092018 200 PM AST Tue Sep 11 2018 ...ISAAC CONTINUES MOVING WESTWARD... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...14.6N 50.4W ABOUT 725 MI...1165 KM E OF THE LESSER ANTILLES MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The meteorological service of Antigua and Barbuda has issued a Tropical Storm Watch for St. Kitts and Nevis. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Guadeloupe * Martinique * Dominica A Tropical Storm Watch is in effect for... * Antigua * Montserrat * St. Kitts and Nevis A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. 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 should monitor the progress of Isaac as additional watches could be issued this afternoon or evening. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the center of Tropical Storm Isaac was located with high-resolution GOES-16 visible satellite data near latitude 14.6 North, longitude 50.4 West. Isaac is moving toward the west near 16 mph (26 km/h), and this motion is expected to continue for the next few days. On the forecast track Isaac is anticipated to move near or over the central Lesser Antilles on Thursday and move into the eastern Caribbean Sea Thursday night. Maximum sustained winds remain near 70 mph (110 km/h) with higher gusts. Isaac is expected to be near hurricane strength when it moves through the central Lesser Antilles, with some weakening forecast afterward on Friday. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 996 mb (29.42 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 3 to 5 inches with isolated amounts near 10 inches across the southern Leeward Islands late this week, with 1 to 2 inches anticipated across portions of the Windward Islands. STORM SURGE: A storm surge of 2 to 4 feet above normal tide levels is possible near and to the north of where the center moves through the Lesser Antilles. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are possible within the hurricane watch area by Thursday morning, with tropical storm conditions possible early Thursday in both the hurricane and tropical storm watch areas. SURF: Swells generated by Isaac will begin to affect portions of the Lesser Antilles on Wednesday afternoon. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 18A NWS National Hurricane Center Miami FL AL092018 200 AM AST Wed Sep 12 2018 ...ISAAC MOVING WESTWARD TOWARD THE LESSER ANTILLES WITH NO CHANGE IN STRENGTH... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...14.5N 53.0W ABOUT 535 MI...860 KM E OF MARTINIQUE MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Martinique * Dominica * Guadeloupe A Tropical Storm Watch is in effect for... * Antigua * Montserrat * St. Kitts and Nevis * Saba and St. Eustatius 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, in this case within 36 to 48 hours. Interests elsewhere in the Leeward Islands should monitor the progress of Isaac. 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 center of Tropical Storm Isaac was located near latitude 14.5 North, longitude 53.0 West. Isaac is moving toward the west near 16 mph (26 km/h), and this general motion is expected to continue through the weekend. On the forecast track, Isaac's center is forecast to move across the central Lesser Antilles and into the eastern Caribbean Sea on Thursday. Maximum sustained winds remain near 65 mph (100 km/h) with higher gusts. Gradual weakening is forecast during the next few days. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 3 to 5 inches with isolated amounts near 10 inches across Martinique, Dominica, and Guadeloupe, with 1 to 2 inches anticipated across the remaining Windward and Leeward Islands. WIND: Tropical storm conditions are expected on Martinique, Dominica, and Guadeloupe by tonight or early Thursday. Tropical storm conditions are possible within the tropical storm watch area on Thursday. STORM SURGE: Some coastal flooding is possible in areas of onshore winds. Near the coast, the surge will be accompanied by large waves. SURF: Swells generated by Isaac will begin to affect portions of the Lesser Antilles this afternoon. These swells are likely to 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. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 19A...Corrected NWS National Hurricane Center Miami FL AL092018 800 AM AST Wed Sep 12 2018 Corrected latitude to 14.4N in the discussion section ...NOAA HURRICANE HUNTER APPROACHING ISAAC... SUMMARY OF 800 AM AST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...14.4N 54.1W ABOUT 450 MI...725 KM E OF MARTINIQUE MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 15 MPH...24 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... * Martinique * Dominica * Guadeloupe A Tropical Storm Watch is in effect for... * Antigua * Montserrat * St. Kitts and Nevis * Saba and St. Eustatius 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, in this case within 36 to 48 hours. Interests elsewhere in the Leeward Islands should monitor the progress of Isaac. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM AST (1200 UTC), the center of Tropical Storm Isaac was located near latitude 14.4 North, longitude 54.1 West. Isaac is moving toward the west near 15 mph (24 km/h), and this general motion is expected to continue through the weekend. On the forecast track, Isaac's center is forecast to move across the central Lesser Antilles and into the eastern Caribbean Sea on Thursday, and into the central Caribbean Sea on Saturday. Maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Gradual weakening is forecast during the next few days. A NOAA hurricane hunter aircraft will soon fly through the center of Isaac, and will provide a better assessment of the intensity of the tropical storm and the extent of its winds. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1000 mb (29.53 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 inches across Martinique, Dominica, and Guadeloupe, with up to one inch anticipated across the remaining Windward and Leeward Islands. WIND: Tropical storm conditions are expected on Martinique, Dominica, and Guadeloupe by tonight or early Thursday. Tropical storm conditions are possible within the tropical storm watch area on Thursday. STORM SURGE: Some coastal flooding is possible in areas of onshore winds. Near the coast, the surge will be accompanied by large waves. SURF: Swells generated by Isaac will begin to affect portions of the Lesser Antilles this afternoon. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 20A...Corrected NWS National Hurricane Center Miami FL AL092018 200 PM AST Wed Sep 12 2018 Corrected for distances from Martinique and Guadeloupe ...ISAAC MOVING RAPIDLY WESTWARD... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...15.1N 55.7W ABOUT 350 MI...565 KM E OF MARTINIQUE ABOUT 385 MI...620 KM E OF GUADELOUPE MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of France has issued a Tropical Storm Watch for St. Martin and the government of St. Maarten has issued a Tropical Storm Watch for St. Maarten. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Martinique * Dominica * Guadeloupe A Tropical Storm Watch is in effect for... * Antigua * Montserrat * St. Kitts and Nevis * Saba and St. Eustatius * St. Martin and St. Maarten A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 24 to 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within 24 to 36 hours. Interests elsewhere in the Leeward Islands should monitor the progress of Isaac. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the center of Tropical Storm Isaac was located by a NOAA Hurricane Hunter aircraft and satellite near latitude 15.1 North, longitude 55.7 West. Isaac is moving faster toward the west near 21 mph (33 km/h), and this general motion with a decrease in forward is expected to continue through the weekend. On the forecast track, Isaac is forecast to move across the central Lesser Antilles and into the eastern Caribbean Sea on Thursday, and then move across the eastern and central Caribbean Sea through Saturday. Aircraft data indicate that maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Gradual weakening is forecast during the next 72 hours. Tropical-storm-force winds extend outward up to 175 miles (280 km), primarily to the north of the center. The estimated minimum central pressure based on the aircraft data is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 inches across Martinique, Dominica, and Guadeloupe. Rainfall of 1 to 2 inches with isolated amounts to 4 inches are forecast across Puerto Rico and the southern United States Virgin Islands, with up to an inch anticipated across the remaining Windward and Leeward Islands. This rainfall may cause life-threatening flash flooding. WIND: Tropical storm conditions are expected on Martinique, Dominica, and Guadeloupe early Thursday. Tropical storm conditions are possible within the tropical storm watch area on Thursday. STORM SURGE: Some coastal flooding is possible in areas of onshore winds. Near the coast, the surge will be accompanied by large waves. SURF: Swells generated by Isaac will begin to affect portions of the Lesser Antilles this afternoon. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 22A NWS National Hurricane Center Miami FL AL092018 200 AM AST Thu Sep 13 2018 ...NOAA HURRICANE HUNTER AIRCRAFT FINDS ISAAC A LITTLE WEAKER... ...HEAVY RAINS AND TROPICAL-STORM-FORCE WINDS EXPECTED OVER PORTIONS OF THE LEEWARD ISLANDS ON THURSDAY... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...15.3N 58.8W ABOUT 170 MI...275 KM E OF DOMINICA ABOUT 185 MI...300 KM ESE OF GUADELOUPE MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 20 MPH...31 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Martinique * Dominica * Guadeloupe A Tropical Storm Watch is in effect for... * Antigua * Montserrat * St. Kitts and Nevis * Saba and St. Eustatius * St. Martin and St. Maarten A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within 12 hours. Interests elsewhere in the Leeward Islands should monitor the progress of Isaac. 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 center of Tropical Storm Isaac was located near latitude 15.3 North, longitude 58.8 West. Isaac is moving toward the west near 20 mph (31 km/h), and this general motion with a decrease in forward is expected to continue through the weekend. On the forecast track, Isaac is forecast to move across the central Lesser Antilles and into the eastern Caribbean Sea later today, and then move across the eastern and central Caribbean Sea through the weekend. Data from a NOAA Hurricane Hunter aircraft indicate that the maximum sustained winds have decreased to near 45 mph (75 km/h) with higher gusts. A continued gradual decrease in the winds is forecast during the next few days. Tropical-storm-force winds extend outward up to 175 miles (280 km) to the north of the center. Recent data from the NOAA aircraft indicate that the minimum pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 inches across Martinique, Dominica, and Guadeloupe. Rainfall of 1 to 2 inches with isolated amounts to 4 inches are forecast across Puerto Rico and the southern United States Virgin Islands, with up to an inch anticipated across the remaining Windward and Leeward Islands. This rainfall may cause life-threatening flash flooding. WIND: Tropical storm conditions are expected within the tropical storm warning area later this morning through the afternoon. Tropical storm conditions are possible within the tropical storm watch area, beginning later this morning. STORM SURGE: Some coastal flooding is possible in areas of onshore winds. Near the coast, the surge will be accompanied by large waves. SURF: Swells generated by Isaac are affecting portions of the Lesser Antilles. These swells are likely to 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. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Intermediate Advisory Number 24A NWS National Hurricane Center Miami FL AL092018 200 PM AST Thu Sep 13 2018 ...ISAAC BECOMING LESS ORGANIZED OVER THE EASTERN CARIBBEAN SEA... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...14.9N 62.5W ABOUT 80 MI...130 KM WSW OF DOMINICA ABOUT 240 MI...385 KM SE OF ST. CROIX MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of the Netherlands has discontinued the Tropical Storm Watch for Saba and St. Eustatius. The government of France has discontinued the Tropical Storm Watch for St. Martin, and the government of St. Maarten has discontinued the Tropical Storm Watch for St. Maarten. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Martinique * Dominica * Guadeloupe A Tropical Storm Watch is in effect for... * Antigua * Barbuda * Montserrat * St. Kitts and Nevis A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Leeward Islands should monitor the progress of Isaac. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the center of Tropical Storm Isaac was located by satellite images near latitude 14.9 North, longitude 62.5 West. Isaac is moving toward the west near 18 mph (30 km/h). A westward track with a slower forward motion is forecast to continue for the next few days. On the forecast track, Isaac should move farther away from Lesser Antilles today, and then move across the eastern and central Caribbean Sea through the weekend. Maximum sustained winds remain near 45 mph (75 km/h) with higher gusts. Gradual weakening is forecast over the next few days as Isaac moves through the Caribbean Sea. Tropical-storm-force winds extend outward up to 160 miles (260 km) from the center. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Tropical Storm Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 to 10 inches over Dominica. Rainfall amounts of 2 to 4 inches with isolated amounts up to 6 inches over elevated terrain are forecast across Martinique and Guadeloupe. Rainfall totals of 2 to 4 inches are forecast across southeastern Puerto Rico, while totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico and the U.S. Virgin Islands. This rainfall may cause dangerous flash flooding. WIND: Tropical storm conditions are occuring within portions of the warning area and should continue through the afternoon hours. Tropical storm conditions are possible within the watch area today. SURF: Swells generated by Isaac are affecting portions of the Lesser Antilles. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Advisory Number 26 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Thu Sep 13 2018 ...ISAAC MOVING WESTWARD ACROSS THE EASTERN CARIBBEAN SEA... ...BANDS OF RAIN LINGERING OVER THE LESSER ANTILLES... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.9N 64.4W ABOUT 195 MI...315 KM S OF ST. CROIX ABOUT 440 MI...710 KM SE OF SANTO DOMINGO DOMINICAN REPUBLIC MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 14.9 North, longitude 64.4 West. Isaac is moving toward the west near 16 mph (26 km/h), and this general motion with a decrease in forward speed is expected for the next few days. On the forecast track, Isaac will move over the eastern and central Caribbean Sea during the next few days. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Isaac is forecast to gradually weaken over the next few days, and could degenerate into a tropical wave at any time. 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 ---------------------- RAINFALL: Isaac is expected to produce additional rainfall of 2 to 3 inches with isolated amounts up to 5 inches across the northern Windward Islands into the Leeward islands, and southeastern Puerto Rico. Totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico, the Virgin Islands, Dominican Republic and Haiti. This rainfall may cause life-threatening flash flooding. SURF: Swells generated by Isaac are still affecting portions of the Lesser Antilles. These swells are likely to 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. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Depression Isaac Advisory Number 28 NWS National Hurricane Center Miami FL AL092018 1100 AM AST Fri Sep 14 2018 ...BANDS OF RAIN FROM ISAAC CONTINUE TO AFFECT THE LESSER ANTILLES... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...14.9N 67.3W ABOUT 300 MI...485 KM SE OF SANTO DOMINGO DOMINICAN REPUBLIC ABOUT 665 MI...1070 KM ESE OF KINGSTON JAMAICA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Tropical Depression Isaac was located near latitude 14.9 North, longitude 67.3 West. The depression is moving toward the west near 16 mph (26 km/h), and this general motion with some decrease in forward speed is expected over the next couple of days. A turn to the west-northwest is possible early next week if Isaac survives. On the forecast track, Isaac will move over the eastern and central Caribbean Sea during the next few days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Isaac is forecast to gradually weaken over the next few days, and could degenerate into a tropical wave at any time. A NOAA Hurricane Hunter aircraft is currently en route to investigate the depression. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce additional rainfall of 2 to 3 inches with isolated maximum totals of up to 5 inches across southeast Puerto Rico. Rainfall totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico, the Virgin Islands, the Leeward Islands and the northern Windward Islands. Rainfall totals of 2 to 3 inches with isolated maximum amounts of 4 inches are possible across the south- central portion of the Dominican Republic, southwest Haiti and Jamaica. This rainfall may cause life-threatening flash floods. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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Tropical Storm Isaac Advisory Number 30 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Fri Sep 14 2018 ...ISAAC QUICKLY LOSING ORGANIZATION AGAIN... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...15.4N 69.5W ABOUT 215 MI...345 KM S OF SANTO DOMINGO DOMINICAN REPUBLIC ABOUT 515 MI...830 KM ESE OF KINGSTON JAMAICA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in Jamaica should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 15.4 North, longitude 69.5 West. Isaac is moving toward the west near 15 mph (24 km/h) and this general motion with a slight decrease in forward speed is expected over the next couple of days. A turn toward the west-northwest or northwest is possible by the end of the weekend, if Isaac has not degenerated into a trough of low pressure by then. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. The maximum winds are not expected to change very much during the next several days. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce additional rainfall of 2 to 3 inches with isolated maximum totals of up to 5 inches across southeast Puerto Rico. Rainfall totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico, the Virgin Islands, the Leeward Islands and the northern Windward Islands. Rainfall totals of 2 to 3 inches with isolated maximum amounts of 4 inches are possible across the south- central portion of the Dominican Republic, southwest Haiti and most of Jamaica except for the eastern portion of Jamaica where rainfall totals of 2 to 4 inches and maximum amounts of 6 inches are possible. This rainfall may cause life-threatening flash floods. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. https://www.nhc.noaa.gov/storm_graph...png/025045.png |
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