Marine/Aviation Tropical Cyclone Advisory
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000
WTNT23 KNHC 172037
TCMAT3

POST-TROPICAL CYCLONE GERT FORECAST/ADVISORY NUMBER  20
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL082017
2100 UTC THU AUG 17 2017

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 44.8N  46.0W AT 17/2100Z
POSITION ACCURATE WITHIN  25 NM

PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR  60 DEGREES AT  34 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  985 MB
MAX SUSTAINED WINDS  55 KT WITH GUSTS TO  65 KT.
50 KT....... 40NE  60SE   0SW   0NW.
34 KT.......120NE 200SE 120SW  20NW.
12 FT SEAS..180NE 120SE 660SW  90NW.
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 44.8N  46.0W AT 17/2100Z
AT 17/1800Z CENTER WAS LOCATED NEAR 44.0N  48.0W

FORECAST VALID 18/0600Z 47.8N  40.5W...POST-TROP/EXTRATROP
MAX WIND  45 KT...GUSTS  55 KT.
34 KT...180NE 240SE 120SW  90NW.

FORECAST VALID 18/1800Z 50.6N  36.2W...POST-TROP/EXTRATROP
MAX WIND  40 KT...GUSTS  50 KT.
34 KT...180NE 180SE 120SW 120NW.

FORECAST VALID 19/0600Z 52.5N  35.0W...POST-TROP/EXTRATROP
MAX WIND  35 KT...GUSTS  45 KT.
34 KT...210NE 120SE  60SW 150NW.

FORECAST VALID 19/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 44.8N  46.0W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM.  ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE
FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.


$$
FORECASTER ZELINSKY





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