WTMA20 FIMP 201230 TTT WARNING OF GALE FORCE WIND AT 20/1200 UTC, MODERATE TROPICAL STORM 4 (CHENGE) 992 HPA WAS CENTRED WITHIN 30 NM RADIUS OF POINT 9.1 S / 67.0 E (NINE DECIMAL ONE DEGREES SOUTH AND SIXTY SEVEN DECIMAL ZERO DEGREES EAST). MOVEMENT: SOUTH-WEST 7 KT THREAT AREAS: SQUALLY WEATHER WITHIN A 80 NM RADIUS AROUND THE CENTER, EXTENDING UP TO 250 NM IN THE WESTERN SEMI-CIRCLE. GALE FORCE WINDS 35/40 KT AND VERY ROUGH TO HIGH SEAS WITHIN A 55 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 90 NM IN THE NORTH-WESTERN QUADRANT AND UP TO 100 NM IN THE SOUTHERN SEMI-CIRCLE. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEAS WITHIN A 120 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 140 NM IN THE NORTH-WESTERN QUADRANT, UP TO 230 NM IN THE SOUTH-EASTERN QUADRANT AND UP TO 300 NM IN THE SOUTH-WESTERN QUADRANT. STRONG GUSTS UNDER SQUALLS. END=