WTPA35 PHFO 210244

TCPCP5



BULLETIN

HURRICANE OLAF ADVISORY NUMBER  25

NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP192015

500 PM HST TUE OCT 20 2015



...OLAF MOVING WEST NORTHWESTWARD FAR SOUTHEAST OF HAWAII...





SUMMARY OF 500 PM HST...0300 UTC...INFORMATION

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LOCATION...11.1N 143.1W

ABOUT 995 MI...1600 KM SE OF HILO HAWAII

ABOUT 1205 MI...1940 KM ESE OF HONOLULU HAWAII

MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H

PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H

MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES





WATCHES AND WARNINGS

--------------------

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.





DISCUSSION AND 48-HOUR OUTLOOK

------------------------------

AT 500 PM HST...0300 UTC...THE CENTER OF HURRICANE OLAF WAS LOCATED

NEAR LATITUDE 11.1 NORTH...LONGITUDE 143.1 WEST. OLAF IS MOVING

TOWARD THE WEST-NORTHWEST NEAR 10 MPH...17 KM/H...AND THIS MOTION IS

EXPECTED TO CONTINUE THROUGH TONIGHT. A TURN TOWARD THE NORTHWEST ON

WEDNESDAY IS EXPECTED TO CONTINUE THURSDAY.



MAXIMUM SUSTAINED WINDS ARE NEAR 145 MPH...230 KM/H...WITH HIGHER

GUSTS.  OLAF IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON

HURRICANE WIND SCALE. GRADUAL WEAKENING IS EXPECTED WEDNESDAY

INTO THURSDAY.



HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 40 MILES...65 KM...FROM

THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140

MILES...220 KM.



THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 943 MB...27.85 INCHES.





HAZARDS AFFECTING LAND

----------------------

SURF...LARGE SWELLS GENERATED BY OLAF WILL BUILD ALONG EAST FACING

SHORES OF THE MAIN HAWAIIAN ISLANDS OVER THE NEXT COUPLE OF DAYS.

RESULTANT HAZARDOUS SURF WILL BE LARGE...POTENTIALLY

LIFE-THREATENING AND DAMAGING. SEE PRODUCTS ISSUED BY THE NATIONAL

WEATHER SERVICE FORECAST OFFICE IN HONOLULU FOR DETAILS.





NEXT ADVISORY

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NEXT COMPLETE ADVISORY...1100 PM HST.



$$

FORECASTER POWELL