4 September 2025 - bulletin 580

Issued at 1500 GMT
Latest warnings for 11E, 12E and 21W
Disturbance update
EASTERN PACIFIC OCEAN
HURRICANE Kiko / 11E
Warning 18 from NHC at 1500 GMT
Position 13.8N 133.7W
Location 1470 miles ESE of Hilo, Hawaii
Movement 270° (W) at 8 knots
Maximum sustained winds 115 knots gusting to 140 knots
Winds of 34 knots or higher occur within 80 miles of the centre
Winds of 64 knots or higher occur within 30 miles of the centre
Threatened landmasses NONE
Minimum central pressure 951 mbar 
Next warning from NHC at 2100 GMT

Tropical storm Lorena / 12E

Warning 11 from NHC at 1500 GMT
Position 24.2N 114.2W
Location 125 miles WSW of Cabo San Lazaro, Mexico
Movement 310° (NW) at 7 knots
Maximum sustained winds 60 knots gusting to 75 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Threatened landmasses Mexico
Minimum central pressure 991 mbar 
Next warning from NHC at 1800 GMT

Mexican warnings

NORTHWESTERN PACIFIC OCEAN

Tropical storm Peipah / 21W
Warning 05 from JTWC at 1500 GMT
Position 32.3N 132.0W
Location 424 miles WSW of Yokosuka, Japan
Movement 020° (NNE) at 14 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 110 miles to the southeast of the centre
Threatened landmasses Japan
Minimum central pressure 997 mbar 
Maximum significant wave height 15 feet
Next warning from JTWC at 2100 GMT

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1200 GMT
System 91L
Position 12.1N 33.5W
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (50%)
Likelihood of tropical cyclone formation within 7 days is HIGH (80%)

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