...SEBASTIEN EXPECTED TO BECOME A HURRICANE BY TONIGHT...
NWS National Hurricane Center Miami FL AL202019
1100 AM AST Thu Nov 21 2019
SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
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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
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There are no coastal watches or warnings in effect.
DISCUSSION AND OUTLOOK
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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
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None
Forecaster Pasch
