WTJP21 RJTD 031800

WARNING 031800.

WARNING VALID 041800.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1703 NANMADOL (1703) 985 HPA

AT 31.3N 127.7E EAST CHINA SEA MOVING NORTHNORTHEAST 25 KNOTS.

POSITION GOOD.

MAX WINDS 55 KNOTS NEAR CENTER.

RADIUS OF OVER 50 KNOT WINDS 20 MILES.

RADIUS OF OVER 30 KNOT WINDS 100 MILES EAST SEMICIRCLE AND 80 MILES

ELSEWHERE.

FORECAST POSITION FOR 040600UTC AT 33.7N 133.8E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

992 HPA, MAX WINDS 45 KNOTS NEAR CENTER.

FORECAST POSITION FOR 041800UTC AT 35.0N 141.5E WITH 80 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

996 HPA, MAX WINDS 40 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 051800UTC AT 37.8N 153.9E WITH 150 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=