520  
WTNT32 KNHC 141438  
TCPAT2  
 
BULLETIN  
HURRICANE OPHELIA ADVISORY NUMBER 22  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL172017  
1100 AM AST SAT OCT 14 2017  
 
...OPHELIA BECOMES A RARE CATEGORY 3 HURRICANE SOUTH OF THE  
AZORES...   
..THIS IS THE SIXTH MAJOR HURRICANE OF THE 2017 SEASON
 
 
SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION  
-----------------------------------------------  
LOCATION...34.8N 26.6W  
ABOUT 220 MI...355 KM S OF THE AZORES  
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H  
PRESENT MOVEMENT...NE OR 55 DEGREES AT 25 MPH...41 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 AM AST (1500 UTC), THE DISTINCT EYE OF HURRICANE OPHELIA WAS  
LOCATED NEAR LATITUDE 34.8 NORTH, LONGITUDE 26.6 WEST. OPHELIA IS  
MOVING TOWARD THE NORTHEAST NEAR 25 MPH (41 KM/H), AND THIS MOTION  
IS EXPECTED CONTINUE THROUGH SUNDAY WITH A TURN TOWARD THE  
NORTH-NORTHEAST THEREAFTER. ON THE FORECAST TRACK, THE CORE OF  
OPHELIA WILL PASS TO THE SOUTH AND SOUTHEAST OF THE SOUTHEASTERN  
AZORES BY TONIGHT.  
 
SATELLITE DATA INDICATE THAT THE MAXIMUM SUSTAINED WINDS HAVE  
INCREASED NEAR 115 MPH (185 KM/H) WITH HIGHER GUSTS. OPHELIA IS A  
CATEGORY 3 HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE.  
NO SIGNIFICANT CHANGE IN STRENGTH IS EXPECTED TODAY, BUT GRADUAL  
WEAKENING SHOULD BEGIN TONIGHT OR SUNDAY. HOWEVER, OPHELIA IS STILL  
EXPECTED TO REMAIN A POWERFUL CYCLONE WITH HURRICANE FORCE WINDS FOR  
THE NEXT COUPLE OF DAYS AS IT APPROACHES IRELAND.  
 
HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 45 MILES (75 KM) FROM THE  
CENTER AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 125 MILES  
(205 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  
BEGINNING THIS AFTERNOON OR TONIGHT, PRIMARILY DUE TO AN APPROACHING  
COLD FRONT.  
 
RAINFALL: OPHELIA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS  
OF 1 TO 3 INCHES OVER THE CENTRAL AND SOUTHEASTERN AZORES THROUGH  
SATURDAY NIGHT.  
 
NEXT ADVISORY  
-------------  
NEXT COMPLETE ADVISORY AT 500 PM AST.  
 

 
FORECASTER AVILA  
 
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