000
WTNT23 KNHC 181432
TCMAT3
 
HURRICANE GORDON FORECAST/ADVISORY NUMBER  12
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL082012
1500 UTC SAT AUG 18 2012
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
THE GOVERNMENT OF PORTUGAL HAS CHANGED THE TROPICAL STORM WARNING
FOR THE CENTRAL AND EASTERN AZORES TO A HURRICANE WARNING.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A HURRICANE WARNING IS IN EFFECT FOR...
* THE CENTRAL AND EASTERN AZORES
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED 36
HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL STORM
FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT
OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE
RUSHED TO COMPLETION.
 
HURRICANE CENTER LOCATED NEAR 34.1N  38.6W AT 18/1500Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE EAST OR  90 DEGREES AT  16 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  983 MB
EYE DIAMETER  20 NM
MAX SUSTAINED WINDS  70 KT WITH GUSTS TO  85 KT.
64 KT.......  0NE  30SE  30SW   0NW.
50 KT....... 30NE  60SE  60SW   0NW.
34 KT....... 80NE 110SE 110SW  80NW.
12 FT SEAS.. 90NE 180SE 240SW 120NW.
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 34.1N  38.6W AT 18/1500Z
AT 18/1200Z CENTER WAS LOCATED NEAR 34.0N  39.6W
 
FORECAST VALID 19/0000Z 34.3N  35.5W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  40SE  40SW   0NW.
50 KT... 40NE  70SE  70SW  30NW.
34 KT... 90NE 120SE 120SW  90NW.
 
FORECAST VALID 19/1200Z 35.0N  31.4W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 20NE  40SE  40SW   0NW.
50 KT... 50NE  70SE  70SW  30NW.
34 KT...100NE 130SE 130SW  90NW.
 
FORECAST VALID 20/0000Z 36.1N  27.8W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT...  0NE  30SE  30SW   0NW.
50 KT... 50NE  60SE  60SW  30NW.
34 KT...100NE 130SE 130SW  90NW.
 
FORECAST VALID 20/1200Z 37.4N  24.6W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 30NE  40SE  40SW   0NW.
34 KT... 90NE 120SE 110SW  80NW.
 
FORECAST VALID 21/1200Z 38.5N  20.0W...POST-TROP/EXTRATROP
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 20NE  50SE  50SW   0NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM
ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
 
OUTLOOK VALID 22/1200Z 38.5N  16.0W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
OUTLOOK VALID 23/1200Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 34.1N  38.6W
 
NEXT ADVISORY AT 18/2100Z
 
$$
FORECASTER BRENNAN