WTMA20 FIMP 131830 TTT WARNING OF STORM FORCE WINDS AT 13/1800 UTC, SEVERE TROPICAL STORM (TALIAH) 989 HPA POSITION: WITHIN 20 NM RADIUS OF POINT 23.1 S / 85.5 E (TWENTY THREE DECIMAL ONE DEGREES SOUTH AND EIGHTY FIVE DECIMAL FIVE DEGREES EAST) MOVEMENT: WEST 10 KT THREAT AREAS: SQUALLY WEATHER WITHIN A 240 NM RADIUS AROUND THE CENTER, EXTENDING UP TO 400 NM IN THE SOUTH-EASTERN QUADRANT. STORM FORCE WINDS 50 KT AND HIGH TO VERY HIGH SEAS WITHIN A 65 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 75 NM IN THE NORTH-WESTERN QUADRANT AND UP TO 85 NM IN THE SOUTHERN SEMI-CIRCLE. GALE FORCE WINDS 35/45 KT AND VERY ROUGH TO HIGH SEAS WITHIN A 80 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 105 NM IN THE NORTH-WESTERN QUADRANT, UP TO 160 NM IN THE SOUTH-EASTERN QUADRANT AND UP TO 165 NM IN THE SOUTH-WESTERN QUADRANT. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEAS WITHIN A 155 NM RADIUS FROM THE CENTRE, EXTENDING UP TO 165 NM IN THE NORTH-EASTERN QUADRANT, UP TO 220 NM IN THE SOUTH-WESTERN QUADRANT AND UP TO 255 NM IN THE SOUTH-EASTERN QUADRANT. STRONG GUSTS UNDER SQUALLS. END=