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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
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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
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There are no coastal watches or warnings in effect.
DISCUSSION AND OUTLOOK
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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
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None
NEXT ADVISORY
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Next complete advisory at 1100 AM AST.
$$
Forecaster Brown
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