Advisory #8 Tropical Storm MARIA 5pm Sunday 17th September 2017

Advisory# 8

A TROPICAL STORM-WATCH IS IN EFFECT FOR ST.VINCENT AND THE GRENADINES (SVG)

 MARIA upgrades to HURRICANE MARIA.... Hurricane Hunter data indicate that Maria has a compact circulation.

At 5 pm, the center of Hurricane Maria was found near 13.8°N 57.5°W or about 210 miles (338km) to the east of Saint Vincent and the Grenadines; moving west-northwestward near 15 mph (24 km/h). The center is now expected to pass about 120 miles northeast of our islands on Monday afternoon as CAT1 hurricane; then north of SVG by Monday night as CAT 2 hurricane.  Maximum sustained winds have increased to near 75mph (120km/h) with higher gusts. Minimum central pressure was 982mb or 29.00inches. Hurricane-force winds extend outward up to 15 miles (30 km) from the center, and tropical-storm-force winds extend outward up to 105 miles (165 km). Maria could be near major hurricane intensity when it moves across the Leeward Islands Monday night.  As Maria draws closer to the region, increase cloudiness would spread across SVG this afternoon into tonight. Feeder bands could bring pockets of moderate to heavy showers, periods of rain, thunderstorms and occasional gusty winds. Instability expected to continue Monday through Wednesday with rainfall accumulations 4- 8 inches (100 - 200 mm) possible...FLASH FLOODNG IS POSSIBLE! Tonight, variable winds should become fresh to strong 20 – 30 mph (32 - 50km/h) with northerly breeze becoming westerly by Monday. As Maria pulls away from Saint Vincent and the Grenadines on Tuesday, southerly flow becomes south-easterly by Wednesday. Sea swells generated by Maria have begun affecting the Lesser Antilles. Seas across SVG are expected to peak between 3-4 meters (10-13 ft) by Monday, with life-threatening surf and rip current conditions. Further, with Maria projected to be a major hurricane, northerly and westerly swells are expected Tuesday and Wednesday across St. Vincent and the Grenadines. Sea bathers and other users of the sea should stay out of the water during the passage of Maria... A high- surf advisory and small craft warning may be extended beyond 12noon Tuesday.

 Persons near rivers, streams and coastline areas prone to flooding and land slippage, should take precautions.

 

The Saint Vincent Meteorological Services continue to monitor MARIA; the next update will be at 8pm tonight.

 

Prepared by Joan McDonald