115  
WTNT32 KNHC 150239  
TCPAT2  
 
BULLETIN  
HURRICANE OPHELIA ADVISORY NUMBER 24  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL172017  
1100 PM AST SAT OCT 14 2017  
   
..LARGE EYE OF HURRICANE OPHELIA PASSING EAST OF THE AZORES
 
   
..EXPECTED TO BECOME POST-TROPICAL BY SUNDAY NIGHT
 
 
SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION  
-----------------------------------------------  
LOCATION...37.3N 21.5W  
ABOUT 305 MI...490 KM E OF THE AZORES  
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H  
PRESENT MOVEMENT...NE OR 55 DEGREES AT 28 MPH...44 KM/H  
MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES  
 
WATCHES AND WARNINGS  
--------------------  
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.  
 
DISCUSSION AND 48-HOUR OUTLOOK  
------------------------------  
AT 1100 PM AST (0300 UTC), THE CENTER OF HURRICANE OPHELIA WAS  
LOCATED NEAR LATITUDE 37.3 NORTH, LONGITUDE 21.5 WEST. OPHELIA IS  
MOVING TOWARD THE NORTHEAST NEAR 28 MPH (44 KM/H). A CONTINUED  
NORTHEAST MOTION WITH AN INCREASE IN FORWARD SPEED IS EXPECTED  
TONIGHT AND SUNDAY, FOLLOWED BY A TURN TOWARD THE NORTH-NORTHEAST  
SUNDAY NIGHT. ON THE FORECAST TRACK, THE CENTER OF OPHELIA WILL  
CONTINUE TO PASS EAST OF THE AZORES TONIGHT, AND APPROACH IRELAND  
ON MONDAY.  
 
MAXIMUM SUSTAINED WINDS ARE NEAR 115 MPH (185 KM/H) WITH HIGHER  
GUSTS. OPHELIA IS A CATEGORY 3 HURRICANE ON THE SAFFIR-SIMPSON  
HURRICANE WIND SCALE. GRADUAL WEAKENING IS FORECAST TO BEGIN  
LATER TONIGHT, BUT OPHELIA IS FORECAST TO BECOME A POST-TROPICAL  
CYCLONE WITH HURRICANE-FORCE WINDS AS IT APPROACHES IRELAND ON  
MONDAY.  
 
HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 45 MILES (75 KM) FROM THE  
CENTER AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 150 MILES  
(240 KM).  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 960 MB (28.35 INCHES).  
 
HAZARDS AFFECTING LAND  
----------------------  
WIND: TROPICAL-STORM-FORCE WINDS ARE POSSIBLE THROUGHOUT THE AZORES  
THROUGH TONIGHT, PRIMARILY DUE TO A COLD FRONT THAT HAS PASSED  
THROUGH THE ISLANDS.  
 
NEXT ADVISORY  
-------------  
NEXT COMPLETE ADVISORY AT 500 AM AST.  
 

 
FORECASTER BROWN  
 
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