WTJP21 RJTD 170600

WARNING 170600.

WARNING VALID 180600.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1607 CHANTHU (1607) 980 HPA

AT 40.8N 142.7E SEA EAST OF JAPAN MOVING NORTH 32 KNOTS.

POSITION GOOD.

MAX WINDS 55 KNOTS.

RADIUS OF OVER 50 KNOT WINDS 60 MILES EAST SEMICIRCLE AND 20 MILES

ELSEWHERE.

RADIUS OF OVER 30 KNOT WINDS 240 MILES EAST SEMICIRCLE AND 120 MILES

ELSEWHERE.

FORECAST POSITION FOR 171800UTC AT 47.8N 144.5E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.

FORECAST POSITION FOR 180600UTC AT 54.6N 147.0E WITH 80 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=