WTPA35 PHFO 202041 TCPCP5 BULLETIN HURRICANE OLAF ADVISORY NUMBER 24 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI EP192015 1100 AM HST TUE OCT 20 2015 ...OLAF REMAINS A POWERFUL CATEGORY FOUR HURRICANE WELL SOUTHEAST OF HAWAII... SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION ----------------------------------------------- LOCATION...10.8N 142.1W ABOUT 1060 MI...1705 KM ESE OF HILO HAWAII ABOUT 1275 MI...2050 KM ESE OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 AM HST...2100 UTC...THE CENTER OF HURRICANE OLAF WAS LOCATED NEAR LATITUDE 10.8 NORTH...LONGITUDE 142.1 WEST. OLAF IS MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH...17 KM/H...AND THIS MOTION IS EXPECTED TO CONTINUE THROUGH TODAY. A TURN TOWARD THE NORTHWEST ON WEDNESDAY IS EXPECTED TO CONTINUE INTO THURSDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 150 MPH...240 KM/H...WITH HIGHER GUSTS. OLAF IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. 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. SOME FLUCTUATIONS IN INTENSITY ARE EXPECTED THROUGH TODAY...WITH A GRADUAL WEAKENING TREND EXPECTED WEDNESDAY INTO THURSDAY. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 938 MB...27.70 INCHES. HAZARDS AFFECTING LAND ---------------------- SURF...LARGE SWELLS GENERATED BY OLAF WILL BEGIN TO ARRIVE 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 ------------- NEXT COMPLETE ADVISORY...500 PM HST. $$ FORECASTER POWELL