WTPH20 RPMM 171800 TTT GALE WARNING 13 AT 1800 17 JANUARY TROPICAL STORM {MEKKHALA} (1501) WAS ESTIMATED BASED ON ALL AVAILABLE DATA AT ONE TWO POINT FIVE NORTH ONE TWO FOUR POINT FIVE EAST FORECAST TO MOVE NORTHWEST AT ZERO FOUR METERS PER SECOND ROUGH TO HIGH SEAS WITHIN TWO ZERO ZERO KILOMETER RADIUS FROM THE CENTER NORTH SEMICIRCLE ONE FIVE ZERO KILOMETER RADIUS ELSEWHERE ESTIMATED CENTRAL PRESSURE NINE NINE ONE HECTOPASCALS MAXIMUM WINDS TWO THREE METERS PER SECOND NEAR THE CENTER ONE THREE METERS PER SECOND WITHIN TWO ZERO ZERO KILOMETER RADIUS FROM THE CENTER NORTH SEMICIRCLE ONE FIVE ZERO KILOMETER RADIUS ELSEWHERE FORECAST POSITIONS AT 181800 ONE FIVE POINT THREE NORTH ONE TWO TWO POINT THREE EAST AT 191800 ONE EIGHT POINT ONE NORTH ONE TWO TWO POINT SEVEN EAST AND AT 201800 TWO ONE POINT SEVEN NORTH ONE TWO FOUR POINT THREE EAST ALL SHIPS WITHIN STORM AREA ARE REQUESTED TO SEND THREE HOURLY WEATHER REPORT TO PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION PD PAGASA=