378  
WTNT32 KNHC 140232  
TCPAT2  
 
BULLETIN  
HURRICANE OPHELIA ADVISORY NUMBER 20  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL172017  
1100 PM AST FRI OCT 13 2017  
 
...CORE OF HURRICANE OPHELIA FORECAST TO PASS SOUTH OF THE AZORES ON  
SATURDAY EVENING...  
 
SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION  
-----------------------------------------------  
LOCATION...33.0N 30.6W  
ABOUT 400 MI...645 KM SSW OF THE AZORES  
MAXIMUM SUSTAINED WINDS...100 MPH...155 KM/H  
PRESENT MOVEMENT...ENE OR 60 DEGREES AT 20 MPH...31 KM/H  
MINIMUM CENTRAL PRESSURE...971 MB...28.68 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 EYE OF HURRICANE OPHELIA WAS LOCATED  
NEAR LATITUDE 33.0 NORTH, LONGITUDE 30.6 WEST. OPHELIA IS MOVING  
TOWARD THE EAST-NORTHEAST NEAR 20 MPH (31 KM/H), AND A CONTINUED  
EAST-NORTHEAST MOTION WITH AN INCREASE IN FORWARD SPEED IS FORECAST  
THROUGH SATURDAY EVENING. A TURN TOWARD THE NORTHEAST IS EXPECTED  
ON SUNDAY. ON THE FORECAST TRACK, THE CORE OF OPHELIA WILL PASS  
SOUTH OF THE SOUTHEASTERN AZORES BY LATE SATURDAY OR EARLY SUNDAY.  
 
MAXIMUM SUSTAINED WINDS REMAIN NEAR 100 MPH (155 KM/H) WITH HIGHER  
GUSTS. OPHELIA IS EXPECTED TO REMAIN A POWERFUL CYCLONE FOR THE  
NEXT COUPLE OF DAYS.  
 
HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 25 MILES (35 KM) FROM THE  
CENTER AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 90 MILES  
(150 KM).  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 971 MB (28.68 INCHES).  
 
HAZARDS AFFECTING LAND  
----------------------  
WIND: TROPICAL-STORM-FORCE WINDS ARE POSSIBLE THROUGHOUT THE AZORES  
BEGINNING LATE SATURDAY OR SATURDAY NIGHT, PRIMARILY DUE TO AN  
APPROACHING COLD FRONT.  
 
RAINFALL: OPHELIA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS  
OF 2 TO 4 INCHES OVER THE SOUTHEASTERN AZORES THROUGH SATURDAY  
NIGHT. DURING THE SAME TIME, A COLD FRONT AND MOISTURE ASSOCIATED  
WITH OPHELIA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 1 TO  
3 INCHES OVER THE OTHER ISLANDS OF THE AZORES. THIS RAINFALL COULD  
PRODUCE FLOODING, ESPECIALLY OVER THE SOUTHEASTERN AZORES.  
 
NEXT ADVISORY  
-------------  
NEXT COMPLETE ADVISORY AT 500 AM AST.  
 

 
FORECASTER AVILA  
 
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