WTJP21 RJTD 041800

WARNING 041800.

WARNING VALID 051800.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1821 JEBI (1821) DOWNGRADED FROM TYPHOON 975

HPA

AT 43.2N 140.0E SEA OF JAPAN MOVING NORTH 47 KNOTS.

POSITION FAIR.

MAX WINDS 60 KNOTS.

RADIUS OF OVER 50 KNOT WINDS 60 MILES EAST SEMICIRCLE AND 30 MILES

ELSEWHERE.

RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTHEAST SEMICIRCLE AND 120

MILES ELSEWHERE.

FORECAST POSITION FOR 050600UTC AT 49.6N 138.7E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

974 HPA, MAX WINDS 50 KNOTS.

BECOMING EXTRATROPICAL LOW.

FORECAST POSITION FOR 051800UTC AT 52.9N 137.4E WITH 60 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 40 KNOTS.

BECOMING EXTRATROPICAL LOW.



JAPAN METEOROLOGICAL AGENCY.=