WTPH20 RPMM 111800 TTT TYPHOON WARNING 04 AT 1800 11 SEPTEMBER TYPHOON {MERANTI} (1614) WAS LOCATED BASED ON ALL AVAILABLE DATA AT ONE SEVEN POINT FIVE NORTH ONE THREE ONE POINT SEVEN EAST FORECAST TO MOVE WEST NORTHWEST AT ZERO SIX METERS PER SECOND ROUGH TO PHENOMENAL SEAS WITHIN TWO FIVE ZERO KILOMETER RADIUS FROM THE CENTER ESTIMATED CENTRAL PRESSURE NINE FIVE FOUR HECTOPASCALS MAXIMUM WINDS FOUR SIX METERS PER SECOND NEAR THE CENTER THREE THREE METERS PER SECOND WITHIN ONE ZERO ZERO KILOMETER RADIUS FROM THE CENTER ONE THREE METERS PER SECOND WITHIN TWO FIVE ZERO KILOMETER RADIUS FROM THE CENTER FORECAST POSITONS AT 121800 ONE NINE POINT FOUR NORTH ONE TWO SIX POINT SEVEN EAST AT 131800 TWO ONE POINT ZERO NORTH ONE TWO ONE POINT SIX EAST AT 141800 TWO FOUR POINT ZERO NORTH ONE ONE SEVEN POINT TWO EAST AND AT 151800 TWO EIGHT POINT ZERO NORTH ONE ONE SEVEN POINT ZERO EAST ALL SHIPS WITHIN TYPHOON AREA ARE REQUESTED TO SEND THREE HOURLY WEATHER REPORT TO PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION PD PAGASA=