WTPH20 RPMM 221800 TTT STORM WARNING 01 AT 1800 22 DECEMBER SEVERE TROPICAL STORM {NOCK-TEN} (1626) WAS ESTIMATED BASED ON ALL AVAILABLE DATA AT ONE ZERO POINT NINE NORTH ONE THREE FIVE POINT ONE EAST FORECAST TO MOVE WEST NORTHWSEST AT ZERO SIX METERS PER SECOND ROUGH TO HIGH SEAS WITHIN TWO ZERO ZERO KILOMETER RADIUS NORTH SEMICIRCLE ONE FIVE ZERO KILOMETER RADIUS ELSEWHERE ESTIMATED CENTRAL PRESSURE NINE EIGHT SEVEN HECTOPASCALS MAXIMUM WINDS TWO SIX METERS PER SECOND NEAR THE CENTER ONE THREE METERS PER SECOND WITHIN TWO ZERO ZERO KILOMETER RADIUS NORTH SEMICIRCLE ONE FIVE ZERO KILOMETER RADIUS ELSEWHERE FORECAST POSITIONS AT 231800 ONE TWO POINT SEVENT NORTH ONE THREE ZERO POINT ONE EAST AT 241800 ONE THREE POINT THREE NORTH ONE TWO SIX POINT SEVEN EAST AT 251800 ONE THREE POINT EIGHT NORTH ONE TWO THREE POINT ZERO EAST AT 261800 ONE FOUR POINT FIVE NORTH ONE ONE NINE POINT ZERO EAST AND AT 271800 ONE FIVE POINT ZERO NORTH ONE ONE FIVE POINT SEVEN EAST ALL SHIPS WITHIN STORM AREA ARE REQUESTED TO SEND THREE HOURLY WEATHER REPORT TO PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION PD PAGASA=