WTMA20 FIMP 171835 TTT WARNING OF STORM FORCE WINDS AT 1800 UTC, SEVERE TROPICAL STORM 6 (DUDZAI) 992 HPA WAS CENTRED WITHIN 20 NM RADIUS OF POINT 18.4S / 67.0E (EIGHTEEN DECIMAL FOUR DEGREES SOUTH AND SIXTY SEVEN DECIMAL ZERO DEGREES EAST) MOVEMENT: SOUTH-WEST 6 KT THREAT AREAS: SQUALLY WEATHER WITHIN A 70 NM RADIUS AROUND THE CENTER, EXTENDING UP TO 160 NM IN THE SOUTHERN SEMI-CIRCLE. STORM FORCE WINDS 50 KT AND HIGH TO VERY HIGH SEAS EXTENDING UP TO 30 NM IN THE NORTH-WESTERN QUADRANT, UP TO 40 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 55 NM IN THE SOUTH-EASTERN QUADRANT. GALE FORCE WINDS 35/45 KT AND VERY ROUGH TO HIGH SEAS WITHIN A 35 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 45 NM IN THE NORTH-WESTERN QUADRANT, UP TO 75 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 115 NM IN THE SOUTH-EASTERN QUADRANT. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEAS WITHIN A 50 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 65 NM IN THE NORTH-WESTERN QUADRANT, UP TO 135 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 180 NM IN THE SOUTH-EASTERN QUADRANT. STRONG GUSTS UNDER SQUALLS. END=