10 August 2026 - bulletin 540

Issued at 2145 GMT
Latest warnings for 13W, 14W and 15W
Disturbance update

NORTHWESTERN PACIFIC OCEAN
Tropical storm Peilou / 13W
Warning 16 from JTWC at 2100 GMT
Position 22.4N 154.1E
Location 725 miles WNW of Wake Island
Movement 055° (NE) at 14 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 50 miles to the south of the centre
Threatened landmasses NONE
Minimum central pressure 994 mbar 
Maximum significant wave height 15 feet
Next warning from JTWC at 0300 GMT

Tropical storm Chan-hom / 14W
Warning 16 from JTWC at 2100 GMT
Position 36.8N 145.9E
Location 274 miles ENE of Narita Airport, Japan
Movement 310° (NW) at 19 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 40 to 175 miles of the centre
Threatened landmasses Japan
Minimum central pressure 980 mbar 
Maximum significant wave height 25 feet
Next warning from JTWC at 0300 GMT

Tropical depression 15W
Warning 04 from JTWC at 2100 GMT
Position 27.5N 160.2E
Location 605 miles NW of Wake Island
Movement 270° (W) at 4 knots
Maximum sustained winds 25 knots gusting to 35 knots
Threatened landmasses NONE
Minimum central pressure 997 mbar 
Maximum significant wave height 11 feet
Next warning from JTWC at 0300 GMT

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 0600 GMT 
System No Invest Assigned 
Position 10N 40W 
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 7 days is LOW (10%)

System No Invest Assigned
Position 10N 25W
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is MEDIUM (50%)

System No Invest Assigned 
Position 30N 68W 
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 7 days is LOW (10%)

EASTERN PACIFIC OCEAN
Update from NHC at 0600 GMT
System No Invest Assigned 
Position 13N 113W
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is LOW (10%)

System No Invest Assigned 
Position 11N 130W
Likelihood of tropical cyclone formation within 48 hours is LOW (30%)
Likelihood of tropical cyclone formation within 7 days is MEDIUM (60%)

CENTRAL PACIFIC OCEAN
Update from CPHC at 0600 GMT
System 93C
Position 10.6N 141.2W
Minimum central pressure 1007 mbar
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (50%)
Likelihood of tropical cyclone formation within 7 days is HIGH (90%)

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