WTSS20 VHHH 170746 TROPICAL CYCLONE WARNING AT 170600 UTC, TYPHOON SARIKA (1621) WITH CENTRAL PRESSURE 955 HECTOPASCALS WAS CENTRED WITHIN 30 NAUTICAL MILES OF ONE SEVEN POINT FIVE DEGREES NORTH (17.5 N) ONE ONE THREE POINT ONE DEGREES EAST (113.1 E) AND IS FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 10 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 80 KNOTS. RADIUS OF OVER 33 KNOT WINDS 210 NAUTICAL MILES OVER NORTHERN SEMICIRCLE, 150 NAUTICAL MILES ELSEWHERE. RADIUS OF OVER 47 KNOT WINDS 120 NAUTICAL MILES OVER NORTHERN SEMICIRCLE, 90 NAUTICAL MILES ELSEWHERE. RADIUS OF OVER 63 KNOT WINDS 60 NAUTICAL MILES. RADIUS OF OVER 2 METRE WAVES 300 NAUTICAL MILES OVER NORTHERN SEMICIRCLE, 240 NAUTICAL MILES ELSEWHERE. FORECAST POSITION AND INTENSITY AT 180600 UTC ONE NINE POINT ZERO DEGREES NORTH (19.0 N) ONE ONE ZERO POINT TWO DEGREES EAST (110.2 E) MAXIMUM WINDS 90 KNOTS. FORECAST POSITION AND INTENSITY AT 190600 UTC TWO ONE POINT ZERO DEGREES NORTH (21.0 N) ONE ZERO EIGHT POINT ZERO DEGREES EAST (108.0 E) MAXIMUM WINDS 60 KNOTS. FORECAST POSITION AND INTENSITY AT 200600 UTC DISSIPATED OVER LAND.