WTPQ20 VHHH 311046 TROPICAL CYCLONE WARNING AT 310900 UTC, SEVERE TROPICAL STORM NIDA (1604) WITH CENTRAL PRESSURE 978 HECTOPASCALS WAS CENTRED WITHIN 60 NAUTICAL MILES OF ONE EIGHT POINT FIVE DEGREES NORTH (18.5 N) ONE TWO ONE POINT SEVEN DEGREES EAST (121.7 E) AND IS FORECAST TO STRENGTHEN AND MOVE NORTHWEST OR WEST-NORTHWEST AT ABOUT 12 KNOTS FOR THE NEXT 24 HOURS. MAXIMUM WINDS NEAR THE CENTRE ARE ESTIMATED TO BE 60 KNOTS. RADIUS OF OVER 33 KNOT WINDS 90 NAUTICAL MILES. RADIUS OF OVER 47 KNOT WINDS 60 NAUTICAL MILES. RADIUS OF OVER 2 METRE WAVES 180 NAUTICAL MILES. FORECAST POSITION AND INTENSITY AT 010900 UTC TWO ONE POINT ONE DEGREES NORTH (21.1 N) ONE ONE SEVEN POINT THREE DEGREES EAST (117.3 E) MAXIMUM WINDS 80 KNOTS. FORECAST POSITION AND INTENSITY AT 020900 UTC TWO THREE POINT ONE DEGREES NORTH (23.1 N) ONE ONE ONE POINT TWO DEGREES EAST (111.2 E) MAXIMUM WINDS 65 KNOTS. FORECAST POSITION AND INTENSITY AT 030900 UTC TWO THREE POINT SIX DEGREES NORTH (23.6 N) ONE ZERO SIX POINT FOUR DEGREES EAST (106.4 E) MAXIMUM WINDS 30 KNOTS. FORECAST POSITION AND INTENSITY AT 040900 UTC DISSIPATED OVER LAND.