23 October 2017 - bulletin 690

Updated at 2150 GMT
Latest warning for 27W

Tropical storm 27W
Warning 17 from JTWC at 2100 GMT
Position 9.6N 145.9E
Location 234 miles S of Andersen AFB, Guam
Movement 290° (WNW) at 8 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 110 to 120 miles to the south of the centre
Threatened landmasses Japan
Maximum significant wave height 10 feet
Next warning from JTWC at 0300 GMT

27W is now moving to the west. The system will strengthen, peaking at 90 knots after three days, before weakening.