WTJP21 RJTD 021800

WARNING 021800.

WARNING VALID 031800.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1703 NANMADOL (1703) UPGRADED FROM TROPICAL

STORM 990 HPA

AT 24.7N 124.1E EAST CHINA SEA MOVING NORTHNORTHWEST 16 KNOTS.

POSITION FAIR.

MAX WINDS 50 KNOTS NEAR CENTER.

RADIUS OF OVER 30 KNOT WINDS 80 MILES.

FORECAST POSITION FOR 030600UTC AT 28.3N 124.4E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

990 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

FORECAST POSITION FOR 031800UTC AT 32.0N 126.9E WITH 80 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

990 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 041800UTC AT 36.0N 135.5E WITH 150 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

998 HPA, MAX WINDS 35 KNOTS NEAR CENTER.

FORECAST POSITION FOR 051800UTC AT 38.0N 146.0E WITH 220 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

1004 HPA.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=