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| #903450 (Received by flhurricane at: 10:56 AM 17.Sep.2017) TCPAT5 BULLETIN Tropical Storm Maria Advisory Number 5 NWS National Hurricane Center Miami FL AL152017 1100 AM AST Sun Sep 17 2017 ...MARIA EXPECTED TO BECOME A HURRICANE LATER TODAY... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...13.5N 56.2W ABOUT 450 MI...720 KM ESE OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Barbados has issued a Hurricane Warning for Dominica. The government of St. Lucia has issued a Tropical Storm Warning for St. Lucia. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Dominica A Tropical Storm Warning is in effect for... * St. Lucia A Hurricane Watch is in effect for... * Antigua, Barbuda, St. Kitts, Nevis, and Montserrat * Guadeloupe * Saba and St. Eustatius * St. Maarten * St. Martin and St. Barthelemy * Anguilla A Tropical Storm Watch is in effect for... * Martinique * Barbados * St. Vincent and the Grenadines A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm- force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. 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 Lesser Antilles, including the British and U. S. Virgin Islands, as well as Puerto Rico should monitor the progress of this system. Additional Tropical Storm or Hurricane Watches and Warnings will likely be issued today. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 1100 AM AST (1500 UTC), the center of Tropical Storm Maria was located near latitude 13.5 North, longitude 56.2 West. Maria is moving toward the west-northwest near 15 mph (24 km/h), and this motion with a decrease in forward speed is expected through Tuesday. On the forecast track, the center of Maria will move across the Leeward Islands Monday night. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Strengthening is forecast during the next 48 hours, and Maria is expected to become a hurricane later today. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. The estimated minimum central pressure is 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are first expected within portions of the Leeward Islands by Monday night, with tropical storm conditions beginning on Monday. Hurricane conditions are possible within the hurricane watch area by Tuesday, with tropical storm conditions possible Monday night. Tropical storm conditions are possible in the tropical storm watch area Monday or Monday night. STORM SURGE: A dangerous storm surge accompanied by large and destructive waves will raise water levels by as much as 4 to 6 feet above normal tide levels near where the center of Maria moves across the Leeward Islands. RAINFALL: Maria is expected to produce total rain accumulations of 6 to 12 inches with isolated maximum amounts of 20 inches across the Leeward Islands, including Puerto Rico and the U.S. and British Virgin Islands through Wednesday night. Maria is also expected to produce total rain accumulations of 2 to 4 inches for the northern and central Windward Islands. In all the above areas, these rainfall amounts could cause life-threatening flash floods and mudslides. SURF: Swells generated by Maria are beginning to affect 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 intermediate advisory at 200 PM AST. Next complete advisory at 500 PM AST. $$ Forecaster Berg |
