WTPH20 RPMM 301800 TTT GALE WARNING 08 AT 1800 30 JULY TROPICAL STORM {NIDA} (1604) WAS ESTIMATED BASED ON ALL AVAILABLE DATA AT ONE SIX POINT EIGHT NORTH ONE TWO FOUR POINT ONE EAST FORECAST TO MOVE NORTHWEST AT ZERO FIVE METERS PER SECOND ROUGH TO HIGH SEAS WITHIN TWO ZERO ZERO KILOMETER RADIUS FROM THE CENTER 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 FORECAST POSITIONS 311800 ONE NINE POINT THREE NORTH ONE ONE NINE POINT SEVEN EAST AT 011800 TWO TWO POINT THREE NORTH ONE ONE FIVE POINT SEVEN EAST AND AT 021800 TWO FOUR POINT FOUR NORTH ONE ONE ONE POINT ZERO EAST ALL SHIPS WITHIN STORM AREA ARE REQUESTED TO SEND THREE HOURLY WEATHER REPORT TO PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINSTRATION PD PAGASA=