WTPQ20 VHHH 170445 TROPICAL CYCLONE WARNING AT 170300 UTC, SEVERE TYPHOON KOPPU (1524) WITH CENTRAL PRESSURE 935 HECTOPASCALS WAS CENTRED WITHIN 30 NAUTICAL MILES OF ONE FIVE POINT EIGHT DEGREES NORTH (15.8 N) ONE TWO FOUR POINT ONE DEGREES EAST (124.1 E) AND IS FORECAST TO MOVE WEST AT ABOUT 6 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 95 KNOTS. RADIUS OF OVER 33 KNOT WINDS 180 NAUTICAL MILES. 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. FORECAST POSITION AND INTENSITY AT 180300 UTC ONE SIX POINT ZERO DEGREES NORTH (16.0 N) ONE TWO ONE POINT NINE DEGREES EAST (121.9 E) MAXIMUM WINDS 100 KNOTS. FORECAST POSITION AND INTENSITY AT 190300 UTC ONE SIX POINT NINE DEGREES NORTH (16.9 N) ONE TWO ONE POINT TWO DEGREES EAST (121.2 E) MAXIMUM WINDS 75 KNOTS. FORECAST POSITION AND INTENSITY AT 200300 UTC ONE EIGHT POINT ZERO DEGREES NORTH (18.0 N) ONE TWO ONE POINT ZERO DEGREES EAST (121.0 E) MAXIMUM WINDS 55 KNOTS. FORECAST POSITION AND INTENSITY AT 210300 UTC ONE NINE POINT ONE DEGREES NORTH (19.1 N) ONE TWO ONE POINT ZERO DEGREES EAST (121.0 E) MAXIMUM WINDS 55 KNOTS. FORECAST POSITION AND INTENSITY AT 220300 UTC TWO ZERO POINT FOUR DEGREES NORTH (20.4 N) ONE TWO ONE POINT ZERO DEGREES EAST (121.0 E) MAXIMUM WINDS 60 KNOTS.