WTJP21 RJTD 141800

WARNING 141800.

WARNING VALID 151800.

WARNING IS UPDATED EVERY 6 HOURS.

STORM WARNING.

SEVERE TROPICAL STORM 1607 CHANTHU (1607) UPGRADED FROM TROPICAL

STORM 985 HPA

AT 26.2N 144.7E OGASAWARA SHOTO MOVING NORTHNORTHEAST 12 KNOTS.

POSITION FAIR.

MAX WINDS 50 KNOTS NEAR CENTER.

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

ELSEWHERE.

FORECAST POSITION FOR 150600UTC AT 27.7N 143.9E WITH 30 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

FORECAST POSITION FOR 151800UTC AT 29.4N 142.6E WITH 50 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

EXTENDED OUTLOOK.

FORECAST POSITION FOR 161800UTC AT 33.9N 140.8E WITH 110 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

980 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

FORECAST POSITION FOR 171800UTC AT 42.5N 143.3E WITH 220 MILES RADIUS

OF 70 PERCENT PROBABILITY CIRCLE.

990 HPA, MAX WINDS 45 KNOTS NEAR CENTER.



JAPAN METEOROLOGICAL AGENCY.=