WTPA33 PHFO 300246 TCPCP3 BULLETIN HURRICANE IGNACIO ADVISORY NUMBER 21 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI EP122015 500 PM HST SAT AUG 29 2015 ...HAWAIIAN ISLANDS REMAIN VULNERABLE AS MAJOR HURRICANE IGNACIO CONTINUES MOVING STEADILY NORTHWEST... SUMMARY OF 500 PM HST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...17.0N 147.6W ABOUT 525 MI...845 KM ESE OF HILO HAWAII ABOUT 735 MI...1180 KM ESE OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...952 MB...28.12 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... A TROPICAL STORM WATCH HAS BEEN ISSUED FOR MAUI COUNTY. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WATCH IS IN EFFECT FOR... * MAUI COUNTY...INCLUDING THE ISLANDS OF MAUI...MOLOKAI...LANAI AND KAHOOLAWE. * HAWAII COUNTY A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS OF THE INITIAL ISSUANCE. INTERESTS ELSEWHERE IN THE MAIN HAWAIIAN ISLANDS SHOULD CONTINUE TO CLOSELY MONITOR THE PROGRESS OF IGNACIO. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN HONOLULU HAWAII. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 500 PM HST...0300 UTC...THE EYE OF HURRICANE IGNACIO WAS LOCATED NEAR LATITUDE 17.0 NORTH...LONGITUDE 147.6 WEST. IGNACIO IS MOVING TOWARD THE NORTHWEST NEAR 9 MPH...15 KM/H...AND THIS MOTION IS EXPECTED TO CONTINUE FOR THE NEXT COUPLE OF DAYS. ON THE FORECAST TRACK...THE CENTER OF IGNACIO IS EXPECTED TO PASS TO THE NORTHEAST OF THE BIG ISLAND ON MONDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 140 MPH...220 KM/H...WITH HIGHER GUSTS. IGNACIO IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. LITTLE CHANGE IN INTENSITY IS EXPECTED TONIGHT AND A WEAKENING TREND IS EXPECTED TO BEGIN ON SUNDAY. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES...45 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 952 MB...28.12 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE POSSIBLE ON THE BIG ISLAND OF HAWAII STARTING SUNDAY NIGHT...AND STARTING MONDAY ON MAUI. RAINFALL...STORM TOTAL RAINFALL AMOUNTS OF 2 TO 4 INCHES...WITH ISOLATED MAXIMUM AMOUNTS NEAR 6 INCHES MAINLY IN AREAS OF HIGHER TERRAIN...ARE POSSIBLE IN THE WATCH AREA. SURF...LARGE SWELLS GENERATED BY IGNACIO WILL ARRIVE ALONG EAST AND SOUTHEAST FACING SHORES OF THE MAIN HAWAIIAN ISLANDS OVER THE NEXT SEVERAL DAYS. RESULTANT SURF WILL BE LARGE AND POTENTIALLY LIFE-THREATENING...ESPECIALLY ON THE BIG ISLAND LATER THIS WEEKEND AND EARLY NEXT WEEK. NEXT ADVISORY ------------- NEXT INTERMEDIATE ADVISORY...800 PM HST. NEXT COMPLETE ADVISORY...1100 PM HST. $$ FORECASTER R BALLARD