12 April 2026 - bulletin 252

Issued at 1600 GMT
Latest warnings for 04W 
Disturbance update

NORTHWESTERN PACIFIC OCEAN
SUPERTYPHOON Sinlaku / 04W
Warning 15 from JTWC at 1500 GMT
Position 11.1N 150.2E
Location 356 miles ESE of Guam
Movement 335° (NNW) at 89 knots
Maximum sustained winds 150 knots gusting to 180 knots
Winds of 34 knots or higher occur within 180 to 240 miles of the centre
Winds of 64 knots or higher occur within 30 to 50 miles of the centre
Threatened landmasses Micronesia, Northern Marianas Islands
Maximum significant wave height 38 feet
Minimum central pressure 902 mbar 
Next warning from JTWC at 2100 GMT

Micronesia warnings

TROPICAL DISTURBANCE UPDATE
SOUTHERN PACIFIC OCEAN
Update from JTWC at 1330 GMT 
System 31P is no longer suspect for tropical cyclone formation