WTSS20 VHHH 190445 TROPICAL CYCLONE WARNING AT 190300 UTC, TROPICAL STORM DIANMU (1608) WITH CENTRAL PRESSURE 984 HECTOPASCALS WAS CENTRED WITHIN 60 NAUTICAL MILES OF TWO ZERO POINT FIVE DEGREES NORTH (20.5 N) ONE ZERO SEVEN POINT THREE DEGREES EAST (107.3 E) AND IS FORECAST TO MOVE WEST AT ABOUT 12 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 45 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 200300 UTC DISSIPATED OVER LAND.