WTJP21 RJTD 131800

WARNING 131800.

WARNING VALID 141800.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

TROPICAL STORM 1607 CHANTHU (1607) UPGRADED FROM TROPICAL DEPRESSION

998 HPA

AT 19.7N 141.7E MARIANAS MOVING NORTHEAST 10 KNOTS.

POSITION FAIR.

MAX WINDS 35 KNOTS NEAR CENTER.

RADIUS OF OVER 30 KNOT WINDS 180 MILES SOUTHEAST SEMICIRCLE AND 90

MILES ELSEWHERE.

FORECAST POSITION FOR 140600UTC AT 21.4N 143.2E WITH 40 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

992 HPA, MAX WINDS 40 KNOTS NEAR CENTER.

FORECAST POSITION FOR 141800UTC AT 23.6N 144.2E WITH 80 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 151800UTC AT 26.9N 143.1E WITH 95 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

970 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

FORECAST POSITION FOR 161800UTC AT 29.2N 140.8E WITH 130 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

965 HPA, MAX WINDS 65 KNOTS NEAR CENTER.



JAPAN METEOROLOGICAL AGENCY.=