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BULLETIN
Tropical Storm Sebastien Advisory Number  20
NWS National Hurricane Center Miami FL       AL202019
500 AM AST Sun Nov 24 2019

...SEBASTIEN ACCELERATING NORTHEASTWARD TOWARD THE WESTERN AZORES...
...FORECAST TO BECOME POST-TROPICAL OVER THE NEXT DAY OR SO...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...36.0N 40.0W
ABOUT 730 MI...1175 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NE OR 50 DEGREES AT 33 MPH...54 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests in the Azores should monitor the progress of Sebastien.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM AST (0900 UTC), the center of Tropical Storm Sebastien was
located near latitude 36.0 North, longitude 40.0 West.  Sebastien is
moving faster toward the northeast near 33 mph (54 km/h), and an
additional increase in speed toward the northeast is expected
during the next day or so.  On the forecast track, the center of
Sebastien will pass near the western Azores tonight.

Maximum sustained winds are near 65 mph (100 km/h) with higher
gusts.  A slow decrease in the maximum winds is expected
during the next couple of days.  Sebastien is forecast to become
post-tropical tonight and then merge with another weather system
over the northeastern Atlantic on Tuesday.

Tropical-storm-force winds extend outward up to 115 miles (185 km)
from the center.

The estimated minimum central pressure is 994 mb (29.36 inches).


HAZARDS AFFECTING LAND
----------------------
WIND AND RAIN:  Regardless of its status, Sebastien or its remnants
are expected to bring gusty winds and rain to the Azores beginning
later today.  Please see products issued by the Portuguese Institute
for the Sea and the Atmosphere (IPMA) for more information.

SURF:  Swells generated by Sebastien are expected to reach the
Azores later today and tonight.  These swells are likely to cause
life-threatening surf and rip current conditions.


NEXT ADVISORY
-------------
Next complete advisory at 1100 AM AST.

$$
Forecaster Berg

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