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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

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