Hurricane Gaston

Forecast Advisory 21

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109
WTNT22 KNHC 272038
TCMAT2

TROPICAL STORM GASTON FORECAST/ADVISORY NUMBER 21
NWS NATIONAL HURRICANE CENTER MIAMI FL AL072016
2100 UTC SAT AUG 27 2016

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 29.2N 54.0W AT 27/2100Z
POSITION ACCURATE WITHIN 15 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 320 DEGREES AT 8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB
MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT.
50 KT....... 50NE 40SE 20SW 40NW.
34 KT.......130NE 90SE 50SW 110NW.
12 FT SEAS..180NE 90SE 120SW 150NW.
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 29.2N 54.0W AT 27/2100Z
AT 27/1800Z CENTER WAS LOCATED NEAR 28.9N 53.7W

FORECAST VALID 28/0600Z 30.0N 54.6W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 15NE 15SE 10SW 15NW.
50 KT... 60NE 40SE 30SW 40NW.
34 KT...130NE 100SE 60SW 110NW.

FORECAST VALID 28/1800Z 30.7N 55.1W
MAX WIND 80 KT...GUSTS 100 KT.
64 KT... 20NE 20SE 15SW 20NW.
50 KT... 70NE 50SE 40SW 50NW.
34 KT...130NE 120SE 80SW 110NW.

FORECAST VALID 29/0600Z 31.0N 55.3W
MAX WIND 85 KT...GUSTS 105 KT.
64 KT... 30NE 30SE 20SW 30NW.
50 KT... 70NE 60SE 50SW 60NW.
34 KT...140NE 120SE 90SW 110NW.

FORECAST VALID 29/1800Z 31.4N 54.9W
MAX WIND 90 KT...GUSTS 110 KT.
50 KT... 70NE 70SE 50SW 60NW.
34 KT...140NE 130SE 100SW 110NW.

FORECAST VALID 30/1800Z 32.5N 53.0W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 80NE 80SE 70SW 60NW.
34 KT...140NE 150SE 120SW 110NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 31/1800Z 34.0N 50.0W
MAX WIND 75 KT...GUSTS 90 KT.

OUTLOOK VALID 01/1800Z 37.0N 44.0W
MAX WIND 65 KT...GUSTS 80 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.2N 54.0W

NEXT ADVISORY AT 28/0300Z

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FORECASTER STEWART