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| #989947 (Received by flhurricane at: 3:51 AM 20.Nov.2019) TCPAT5 BULLETIN Tropical Storm Sebastien Advisory Number 4 NWS National Hurricane Center Miami FL AL202019 500 AM AST Wed Nov 20 2019 ...SEBASTIEN A LITTLE STRONGER... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...21.0N 61.0W ABOUT 235 MI...380 KM NE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NW OR 305 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 500 AM AST (0900 UTC), the center of Tropical Storm Sebastien was located near latitude 21.0 North, longitude 61.0 West. Sebastien is moving toward the northwest near 8 mph (13 km/h). A turn to the north-northwest and north is expected later today. A turn toward the northeast with an increase in forward speed is expected tonight and Thursday. Maximum sustained winds have increased to near 50 mph (85 km/h) with higher gusts. Some strengthening is forecast during the next 48 hours. Sebastien is expected to become an extratropical cyclone in a couple of days and be absorbed by a cold front on Friday. Tropical-storm-force winds extend outward up to 150 miles (240 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 1100 AM AST. $$ Forecaster Brown |
