893  
WTNT22 KNHC 140853  
TCMAT2  
 
HURRICANE OPHELIA FORECAST/ADVISORY NUMBER 21  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL172017  
0900 UTC SAT OCT 14 2017  
 
THERE ARE NO COASTAL TROPICAL CYCLONE WATCHES OR WARNINGS IN EFFECT.  
 
INTERESTS IN THE AZORES SHOULD REFER TO PRODUCTS ISSUED BY THE  
AZORES WEATHER FORECAST AND WATCH CENTER.  
 
INTERESTS IN IRELAND SHOULD MONITOR PRODUCTS ISSUED BY MET  
EIREANN... AND INTERESTS IN THE UNITED KINGDOM SHOULD MONITOR  
PRODUCTS ISSUED BY THE UK MET OFFICE.  
 
HURRICANE CENTER LOCATED NEAR 33.9N 28.6W AT 14/0900Z  
POSITION ACCURATE WITHIN 15 NM  
 
PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR 60 DEGREES AT 21 KT  
 
ESTIMATED MINIMUM CENTRAL PRESSURE 971 MB  
EYE DIAMETER 20 NM  
MAX SUSTAINED WINDS 85 KT WITH GUSTS TO 105 KT.  
64 KT....... 20NE 20SE 15SW 15NW.  
50 KT....... 40NE 40SE 30SW 30NW.  
34 KT....... 70NE 80SE 70SW 60NW.  
12 FT SEAS..240NE 210SE 210SW 270NW.  
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 33.9N 28.6W AT 14/0900Z  
AT 14/0600Z CENTER WAS LOCATED NEAR 33.4N 29.7W  
 
FORECAST VALID 14/1800Z 35.3N 25.4W  
MAX WIND 80 KT...GUSTS 100 KT.  
64 KT... 20NE 25SE 20SW 15NW.  
50 KT... 40NE 40SE 30SW 30NW.  
34 KT... 80NE 90SE 80SW 80NW.  
 
FORECAST VALID 15/0600Z 38.3N 20.4W  
MAX WIND 80 KT...GUSTS 100 KT.  
64 KT... 20NE 30SE 25SW 15NW.  
50 KT... 50NE 50SE 40SW 40NW.  
34 KT...100NE 120SE 120SW 120NW.  
 
FORECAST VALID 15/1800Z 43.0N 16.0W...POST-TROP/EXTRATROP  
MAX WIND 75 KT...GUSTS 90 KT.  
64 KT... 30NE 40SE 30SW 15NW.  
50 KT... 60NE 70SE 50SW 40NW.  
34 KT...150NE 160SE 180SW 200NW.  
 
FORECAST VALID 16/0600Z 48.4N 12.5W...POST-TROP/EXTRATROP  
MAX WIND 75 KT...GUSTS 90 KT.  
50 KT... 90NE 120SE 120SW 150NW.  
34 KT...210NE 240SE 240SW 240NW.  
 
FORECAST VALID 17/0600Z 57.4N 6.3W...POST-TROP/EXTRATROP  
MAX WIND 50 KT...GUSTS 60 KT.  
50 KT... 0NE 90SE 0SW 0NW.  
34 KT...300NE 360SE 300SW 240NW.  
 
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 18/0600Z 63.1N .5W...POST-TROP/EXTRATROP  
MAX WIND 40 KT...GUSTS 50 KT.  
 
OUTLOOK VALID 19/0600Z...DISSIPATED  
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.9N 28.6W  
 
NEXT ADVISORY AT 14/1500Z  
 

 
FORECASTER STEWART  
 
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