ZCZC MIATCPAT5 ALL
TTAA00 KNHC DDHHMM

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

NNNN