WTSS20 VHHH 190745 TROPICAL CYCLONE WARNING AT 190600 UTC, TROPICAL STORM DIANMU (1608) WITH CENTRAL PRESSURE 982 HECTOPASCALS WAS CENTRED WITHIN 60 NAUTICAL MILES OF TWO ZERO POINT SIX DEGREES NORTH (20.6 N) ONE ZERO SIX POINT FOUR DEGREES EAST (106.4 E) AND IS FORECAST TO WEAKEN AND MOVE WEST AT ABOUT 15 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 40 KNOTS. RADIUS OF OVER 33 KNOT WINDS 60 NAUTICAL MILES OVER SOUTHERN SEMICIRCLE, 30 NAUTICAL MILES ELSEWHERE. RADIUS OF OVER 2 METRE WAVES 150 NAUTICAL MILES. FORECAST POSITION AND INTENSITY AT 200600 UTC DISSIPATED OVER LAND.