976 
 WTNT23 KNHC 170833
 TCMAT3
 
 HURRICANE GERT FORECAST/ADVISORY NUMBER  18
 NWS NATIONAL HURRICANE CENTER MIAMI FL       AL082017
 0900 UTC THU AUG 17 2017
 
 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
 
 HURRICANE CENTER LOCATED NEAR 41.7N  54.0W AT 17/0900Z
 POSITION ACCURATE WITHIN  25 NM
 
 PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR  65 DEGREES AT  34 KT
 
 ESTIMATED MINIMUM CENTRAL PRESSURE  968 MB
 MAX SUSTAINED WINDS  85 KT WITH GUSTS TO 105 KT.
 64 KT....... 20NE  30SE  20SW   0NW.
 50 KT....... 40NE  70SE  40SW  20NW.
 34 KT....... 90NE 150SE 120SW  50NW.
 12 FT SEAS..120NE 270SE 360SW 300NW.
 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 41.7N  54.0W AT 17/0900Z
 AT 17/0600Z CENTER WAS LOCATED NEAR 40.7N  56.0W
 
 FORECAST VALID 17/1800Z 44.2N  47.4W
 MAX WIND  70 KT...GUSTS  85 KT.
 64 KT...  0NE  30SE   0SW   0NW.
 50 KT... 30NE  60SE  40SW  20NW.
 34 KT...100NE 150SE 120SW  60NW.
 
 FORECAST VALID 18/0600Z 48.0N  40.2W...POST-TROP/EXTRATROP
 MAX WIND  55 KT...GUSTS  65 KT.
 50 KT...  0NE  60SE  40SW   0NW.
 34 KT...120NE 150SE 120SW  60NW.
 
 FORECAST VALID 18/1800Z 50.7N  36.0W...POST-TROP/EXTRATROP
 MAX WIND  50 KT...GUSTS  60 KT.
 50 KT... 90NE  60SE   0SW   0NW.
 34 KT...150NE 180SE 120SW 100NW.
 
 FORECAST VALID 19/0600Z 52.0N  33.0W...POST-TROP/EXTRATROP
 MAX WIND  40 KT...GUSTS  50 KT.
 34 KT...180NE 180SE 120SW 120NW.
 
 FORECAST VALID 20/0600Z...DISSIPATED
 
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 41.7N  54.0W
 
 NEXT ADVISORY AT 17/1500Z
 
 $$
 FORECASTER CANGIALOSI