WTJP31 RJTD 170900

WARNING 170900.

WARNING VALID 180900.

STORM WARNING.

SEVERE TROPICAL STORM 1607 CHANTHU (1607) 980 HPA

AT 42.3N 143.1E HOKKAIDO MOVING NORTH 33 KNOTS.

POSITION GOOD.

MAX WINDS 55 KNOTS.

RADIUS OF OVER 50 KNOT WINDS 90 MILES EAST SEMICIRCLE AND 20 MILES

ELSEWHERE.

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

ELSEWHERE.

FORECAST POSITION FOR 172100UTC AT 49.5N 145.0E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.

FORECAST POSITION FOR 180900UTC AT 55.9N 147.6E WITH 80 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=