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Tropical Storm Maria Public Advisory Number 4
2017-09-17 11:07:59| National Hurricane Center (Atlantic)
Issued at 500 AM AST Sun Sep 17 2017 000 WTNT35 KNHC 170907 TCPAT5 BULLETIN Tropical Storm Maria Advisory Number 4 NWS National Hurricane Center Miami FL AL152017 500 AM AST Sun Sep 17 2017 ...MARIA STRENGTHENING... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...13.0N 54.9W ABOUT 460 MI...740 KM ESE OF THE LESSER ANTILLES 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 changed the Tropical Storm Watch for Dominica to a Hurricane Watch. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Antigua, Barbuda, St. Kitts, Nevis, and Montserrat * Guadeloupe * Dominica * Saba and St. Eustatius * St. Maarten * Anguilla A Tropical Storm Watch is in effect for... * St. Lucia * Martinique * Barbados * St. Vincent and the Grenadines 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 and the British and U. S. Virgin Islands 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 500 AM AST (0900 UTC), the center of Tropical Storm Maria was located near latitude 13.0 North, longitude 54.9 West. Maria is moving toward the west-northwest near 15 mph (24 km/h) and this motion with a further reduction in forward speed is expected over the next couple of days. On the forecast track, the center of Maria will be near the Leeward Islands Monday night. Maximum sustained winds have increased to near 65 mph (100 km/h) with higher gusts. Additional strengthening is forecast during the next 48 hours, and Maria will likely become a hurricane later today. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are possible within the hurricane watch area by Monday night or Tuesday, with tropical storm conditions possible on Monday. Tropical storm conditions are possible in the Tropical Storm Watch area on Monday. STORM SURGE: A dangerous storm surge accompanied by large and destructive waves will raise water levels by as much as 3 to 5 feet above normal tide levels within the Hurricane Watch area. RAINFALL: Maria is expected to produce total rain accumulations of 6 to 12 inches with isolated maximum amounts of 20 inches across the central and southern Leeward Islands through Wednesday night. Maria is also expected to produce total rain accumulations of 2 to 4 inches with isolated maximum amounts of 8 inches in the northern Leeward Islands and north-central Windward Islands. This rainfall could cause life-threatening flash floods and mudslides. SURF: Swells generated by Maria are expected to begin affecting the Lesser Antilles by tonight. 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 800 AM AST. Next complete advisory at 1100 AM AST. $$ Forecaster Pasch
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