Hurricane Irma

Forecast Advisory 6

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927
WTNT21 KNHC 312031
TCMAT1

HURRICANE IRMA FORECAST/ADVISORY NUMBER 6
NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017
2100 UTC THU AUG 31 2017

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 17.3N 34.8W AT 31/2100Z
POSITION ACCURATE WITHIN 10 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 967 MB
EYE DIAMETER 10 NM
MAX SUSTAINED WINDS 100 KT WITH GUSTS TO 120 KT.
64 KT....... 15NE 10SE 10SW 10NW.
50 KT....... 30NE 20SE 20SW 30NW.
34 KT....... 70NE 50SE 40SW 60NW.
12 FT SEAS.. 90NE 60SE 30SW 60NW.
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 17.3N 34.8W AT 31/2100Z
AT 31/1800Z CENTER WAS LOCATED NEAR 17.1N 34.3W

FORECAST VALID 01/0600Z 17.8N 36.2W
MAX WIND 105 KT...GUSTS 130 KT.
64 KT... 20NE 15SE 10SW 15NW.
50 KT... 40NE 30SE 20SW 30NW.
34 KT... 80NE 60SE 50SW 70NW.

FORECAST VALID 01/1800Z 18.2N 38.3W
MAX WIND 105 KT...GUSTS 130 KT.
64 KT... 25NE 20SE 15SW 20NW.
50 KT... 40NE 40SE 30SW 40NW.
34 KT... 90NE 70SE 60SW 80NW.

FORECAST VALID 02/0600Z 18.3N 40.7W
MAX WIND 105 KT...GUSTS 130 KT.
64 KT... 30NE 20SE 15SW 20NW.
50 KT... 50NE 40SE 30SW 40NW.
34 KT...100NE 70SE 60SW 90NW.

FORECAST VALID 02/1800Z 17.9N 42.9W
MAX WIND 105 KT...GUSTS 130 KT.
50 KT... 50NE 40SE 30SW 40NW.
34 KT...110NE 70SE 60SW 100NW.

FORECAST VALID 03/1800Z 16.8N 47.5W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 60NE 40SE 40SW 50NW.
34 KT...130NE 80SE 80SW 120NW.

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 04/1800Z 16.0N 52.0W
MAX WIND 115 KT...GUSTS 140 KT.

OUTLOOK VALID 05/1800Z 16.5N 56.5W
MAX WIND 120 KT...GUSTS 145 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.3N 34.8W

NEXT ADVISORY AT 01/0300Z

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FORECASTER BLAKE