WTJP21 RJTD 151200

WARNING 151200.

WARNING VALID 161200.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1607 CHANTHU (1607) 985 HPA

AT 29.4N 143.9E OGASAWARA SHOTO MOVING NORTHNORTHWEST 13 KNOTS.

POSITION FAIR.

MAX WINDS 50 KNOTS NEAR CENTER.

RADIUS OF OVER 30 KNOT WINDS 210 MILES EAST SEMICIRCLE AND 120 MILES

ELSEWHERE.

FORECAST POSITION FOR 160000UTC AT 31.2N 142.5E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

FORECAST POSITION FOR 161200UTC AT 33.4N 141.2E WITH 60 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 171200UTC AT 42.3N 142.8E WITH 150 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

FORECAST POSITION FOR 181200UTC AT 55.2N 147.6E WITH 220 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

984 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=