WTSS20 VHHH 181045 TROPICAL CYCLONE WARNING AT 180900 UTC, TROPICAL STORM DIANMU (1608) WITH CENTRAL PRESSURE 985 HECTOPASCALS WAS CENTRED WITHIN 90 NAUTICAL MILES OF TWO ZERO POINT SIX DEGREES NORTH (20.6 N) ONE ONE ZERO POINT ONE DEGREES EAST (110.1 E) AND IS FORECAST TO MOVE WEST AT ABOUT 10 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 35 KNOTS. RADIUS OF OVER 33 KNOT WINDS 60 NAUTICAL MILES OVER SOUTHERN SEMICIRCLE, 30 NAUTICAL MILES ELSEWHERE. RADIUS OF OVER 2 METRE WAVES 180 NAUTICAL MILES. FORECAST POSITION AND INTENSITY AT 190900 UTC TWO ZERO POINT FOUR DEGREES NORTH (20.4 N) ONE ZERO SIX POINT TWO DEGREES EAST (106.2 E) MAXIMUM WINDS 35 KNOTS. FORECAST POSITION AND INTENSITY AT 200900 UTC DISSIPATED OVER LAND.