WTJP21 RJTD 281800

WARNING 281800.

WARNING VALID 291800.

WARNING IS UPDATED EVERY 6 HOURS.

TYPHOON WARNING.

SEVERE TROPICAL STORM 1821 JEBI (1821) UPGRADED FROM TROPICAL STORM

994 HPA

AT 16.7N 154.4E SEA AROUND OF MINAMITORISIMA MOVING WESTNORTHWEST 09

KNOTS.

POSITION FAIR.

MAX WINDS 50 KNOTS NEAR CENTER.

RADIUS OF OVER 30 KNOT WINDS 180 MILES EAST SEMICIRCLE AND 120 MILES

ELSEWHERE.

FORECAST POSITION FOR 290600UTC AT 17.2N 152.4E WITH 30 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

FORECAST POSITION FOR 291800UTC AT 17.4N 150.3E WITH 50 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 301800UTC AT 18.0N 145.5E WITH 110 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

960 HPA, MAX WINDS 80 KNOTS NEAR CENTER.

FORECAST POSITION FOR 311800UTC AT 19.6N 140.6E WITH 140 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

950 HPA, MAX WINDS 90 KNOTS NEAR CENTER.



JAPAN METEOROLOGICAL AGENCY.=