Hurricane Gaston

Forecast Advisory 20

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546
WTNT22 KNHC 271439
TCMAT2

TROPICAL STORM GASTON FORECAST/ADVISORY NUMBER 20
NWS NATIONAL HURRICANE CENTER MIAMI FL AL072016
1500 UTC SAT AUG 27 2016

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 28.4N 53.2W AT 27/1500Z
POSITION ACCURATE WITHIN 15 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB
MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT.
50 KT....... 50NE 30SE 20SW 30NW.
34 KT.......130NE 80SE 40SW 100NW.
12 FT SEAS..240NE 120SE 120SW 180NW.
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 28.4N 53.2W AT 27/1500Z
AT 27/1200Z CENTER WAS LOCATED NEAR 28.1N 52.8W

FORECAST VALID 28/0000Z 29.3N 54.3W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 15NE 15SE 10SW 15NW.
50 KT... 60NE 40SE 20SW 40NW.
34 KT...130NE 90SE 60SW 100NW.

FORECAST VALID 28/1200Z 30.1N 55.3W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 20NE 20SE 15SW 20NW.
50 KT... 60NE 50SE 40SW 50NW.
34 KT...130NE 110SE 80SW 100NW.

FORECAST VALID 29/0000Z 30.7N 56.0W
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 29/1200Z 31.3N 56.3W
MAX WIND 90 KT...GUSTS 110 KT.
50 KT... 70NE 70SE 50SW 60NW.
34 KT...140NE 130SE 100SW 110NW.

FORECAST VALID 30/1200Z 32.6N 54.4W
MAX WIND 90 KT...GUSTS 110 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 31/1200Z 34.2N 49.6W
MAX WIND 80 KT...GUSTS 100 KT.

OUTLOOK VALID 01/1200Z 36.9N 43.7W
MAX WIND 70 KT...GUSTS 85 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 28.4N 53.2W

NEXT ADVISORY AT 27/2100Z

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FORECASTER STEWART