WTPH20 RPMM 201800 TTT GALE WARNING 04 AT 1800 20 AUGUST TROPICAL STORM {HATO}(1713) WAS ESTIMATED BASED ON ALL AVAILABLE DATA AT TWO ZERO POINT FOUR NORTH ONE TWO FIVE POINT THREE EAST FORECAST TO MOVE WEST NORTHWEST AT ZERO FOUR METERS PER SECOND ROUGH TO VERY ROUGH SEAS WITHIN ONE FIVE ZERO KILOMETER RADIUS ESTIMATED CENTRAL PRESSURE NINE NINE EIGHT HECTOPASCALS MAXIMUM WINDS ONE EIGHT METERS PER SECOND NEAR THE CENTER ONE THREE METERS PER SECOND WITHIN ONE FIVE ZERO KILOMETER RADIUS FORECAST POSITIONS AT 211800 TWO ZERO POINT SEVEN NORTH ONE TWO ZERO POINT NINE EAST AT 221800 TWO TWO POINT ONE NORTH ONE ONE SIX POINT EIGHT EAST AND AT 231800 TWO THREE POINT FIVE NORTH ONE ONE ZERO POINT ZERO EAST ALL SHIPS WITHIN STORM AREA ARE REQUESTED TO SEND THREE HOURLY WEATHER REPORT TO PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION PD PAGASA=