WTJP23 RJTD 051200

WARNING 051200.

WARNING VALID 061200.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1511 NANGKA (1511) UPGRADED FROM TROPICAL STORM

985 HPA

AT 10.8N 162.6E MARSHALLS MOVING WEST 13 KNOTS.

POSITION FAIR.

MAX WINDS 50 KNOTS NEAR CENTER.

RADIUS OF OVER 30 KNOT WINDS 120 MILES.

FORECAST POSITION FOR 060000UTC AT 11.5N 160.1E WITH 50 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

FORECAST POSITION FOR 061200UTC AT 12.4N 157.8E WITH 75 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 071200UTC AT 14.6N 153.5E WITH 140 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

FORECAST POSITION FOR 081200UTC AT 17.5N 149.5E WITH 210 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

950 HPA, MAX WINDS 85 KNOTS NEAR CENTER.



JAPAN METEOROLOGICAL AGENCY.=