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| #990087 (Received by flhurricane at: 9:57 AM 21.Nov.2019) TCPAT5 BULLETIN Tropical Storm Sebastien Advisory Number 9 NWS National Hurricane Center Miami FL AL202019 1100 AM AST Thu Nov 21 2019 ...SEBASTIEN EXPECTED TO BECOME A HURRICANE BY TONIGHT... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...23.5N 60.5W ABOUT 405 MI...650 KM NNE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NNE OR 30 DEGREES AT 8 MPH...13 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 Sebastien was located near latitude 23.5 North, longitude 60.5 West. Sebastien is moving toward the north-northeast near 8 mph (13 km/h). A faster northeastward motion is expected during the next few days. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Sebastien is forecast to become a hurricane by tonight, but a weakening trend is expected to begin by late Friday. The system is likely to become an extratropical cyclone by Saturday. Tropical-storm-force winds extend outward up to 160 miles (260 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. $$ Forecaster Pasch |
