Hurricane Gert

Forecast Advisory 12

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156
WTNT23 KNHC 152031
TCMAT3

HURRICANE GERT FORECAST/ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL AL082017
2100 UTC TUE AUG 15 2017

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 33.7N 71.2W AT 15/2100Z
POSITION ACCURATE WITHIN 20 NM

PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 20 DEGREES AT 10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 981 MB
MAX SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT.
64 KT....... 20NE 20SE 0SW 0NW.
50 KT....... 50NE 50SE 0SW 0NW.
34 KT.......100NE 100SE 60SW 40NW.
12 FT SEAS..180NE 190SE 100SW 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 33.7N 71.2W AT 15/2100Z
AT 15/1800Z CENTER WAS LOCATED NEAR 33.1N 71.8W

FORECAST VALID 16/0600Z 35.3N 69.4W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 25NE 25SE 0SW 0NW.
50 KT... 50NE 60SE 20SW 20NW.
34 KT...100NE 110SE 70SW 50NW.

FORECAST VALID 16/1800Z 37.4N 64.9W
MAX WIND 80 KT...GUSTS 100 KT.
64 KT... 30NE 35SE 15SW 0NW.
50 KT... 50NE 60SE 30SW 30NW.
34 KT...100NE 130SE 100SW 60NW.

FORECAST VALID 17/0600Z 39.7N 58.4W
MAX WIND 80 KT...GUSTS 100 KT.
64 KT... 30NE 40SE 30SW 0NW.
50 KT... 50NE 70SE 50SW 30NW.
34 KT...100NE 140SE 130SW 70NW.

FORECAST VALID 17/1800Z 42.9N 50.2W
MAX WIND 70 KT...GUSTS 85 KT.
50 KT... 50NE 70SE 50SW 0NW.
34 KT...100NE 160SE 140SW 70NW.

FORECAST VALID 18/1800Z 51.5N 37.1W...POST-TROP/EXTRATROP
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 40NE 50SE 40SW 0NW.
34 KT...130NE 150SE 110SW 70NW.

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 19/1800Z 55.5N 33.0W...POST-TROP/EXTRATROP
MAX WIND 40 KT...GUSTS 50 KT.

OUTLOOK VALID 20/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.7N 71.2W

NEXT ADVISORY AT 16/0300Z

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FORECASTER BERG