13 April 2026 - bulletin 254

Issued at 0940 GMT
Latest warnings for 04W 

NORTHWESTERN PACIFIC OCEAN
SUPERTYPHOON Sinlaku / 04W
Warning 18 from JTWC at 0900 GMT
Position 12.7N 148.0E
Location 307 miles ESE of Guam
Movement 305° (NW) at 9 knots
Maximum sustained winds 150 knots gusting to 198 knots
Winds of 34 knots or higher occur within 180 to 240 miles of the centre
Winds of 64 knots or higher occur within 45 to 70 miles of the centre
Threatened landmasses Northern Marianas Islands
Maximum significant wave height 43 feet
Minimum central pressure 903 mbar 
Next warning from JTWC at 1500 GMT

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