WTMA20 FIMP 151815 TTT WARNING OF STORM FORCE WINDS AT 15/1800UTC, SEVERE TROPICAL STORM 9 (TALIAH) 988 HPA WAS CENTRED WITHIN 30 NM RADIUS OF POINT 26.1 S / 82.8 E (TWENTY SIX DECIMAL ONE DEGREES SOUTH AND EIGHTY TWO DECIMAL EIGHT DEGREES EAST) MOVEMENT: SOUTH 7 KT THREAT AREAS: SQUALLY WEATHER EXTENDING UP TO 300 NM IN THE SOUTHERN SEMI-CIRCLE FROM THE CENTER. STORM FORCE WINDS 50 KT AND HIGH TO VERY HIGH SEAS EXTENDING UP TO 85 NM IN THE NORTH-WESTERN QUADRANT AND UP TO 150 NM IN THE SOUTH-WESTERN QUADRANT. GALE FORCE WINDS 35/45 KT AND VERY ROUGH TO HIGH SEAS WITHIN A 100 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 115 NM IN THE NORTH-WESTERN QUADRANT, UP TO 200 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 235 NM IN THE SOUTH-EASTERN QUADRANT. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEAS WITHIN A 210 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 225 NM IN THE NORTH-WESTERN QUADRANT, UP TO 390 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 430 NM IN THE SOUTH-EASTERN QUADRANT. STRONG GUSTS UNDER SQUALLS. END=