Tropical Storm Sebastien Forecast Advisory Number 4

By | November 20, 2019

Issued at 0900 UTC WED NOV 20 2019


000
WTNT25 KNHC 200836
TCMAT5

TROPICAL STORM SEBASTIEN FORECAST/ADVISORY NUMBER   4
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL202019
0900 UTC WED NOV 20 2019

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 21.0N  61.0W AT 20/0900Z
POSITION ACCURATE WITHIN  30 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT   7 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 90NE 130SE   0SW   0NW.
12 FT SEAS..150NE   0SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 21.0N  61.0W AT 20/0900Z
AT 20/0600Z CENTER WAS LOCATED NEAR 20.7N  60.9W

FORECAST VALID 20/1800Z 21.7N  61.5W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 90NE 130SE   0SW   0NW.

FORECAST VALID 21/0600Z 23.2N  60.8W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 50NE  50SE   0SW   0NW.
34 KT...100NE 130SE  30SW   0NW.

FORECAST VALID 21/1800Z 25.3N  58.6W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 50NE  50SE   0SW   0NW.
34 KT...100NE 140SE  30SW  30NW.

FORECAST VALID 22/0600Z 28.7N  54.4W...POST-TROP/EXTRATROP
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 50NE  50SE   0SW   0NW.
34 KT...120NE 150SE  60SW  30NW.

FORECAST VALID 23/0600Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.0N  61.0W

NEXT ADVISORY AT 20/1500Z

$$
FORECASTER BROWN


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