31 July 2025 - bulletin 474

Issued at 1025 GMT
Latest warnings for 01C and 12W
First warning for 07E
Disturbance update

NORTHWESTERN PACIFIC OCEAN
Tropical storm Krosa / 12W
Warning 31 from JTWC at 0900 GMT
Position 30.1N 142.6E
Location 181 miles N of Chichi Jima, Japan
Movement 290° (WNW) at 3 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 75 to 105 miles of the centre
Threatened landmasses Japan
Maximum significant wave height 17 feet
Minimum central pressure 978 mbar
Next warning from JTWC at 1500 GMT

EASTERN PACIFIC OCEAN
Tropical storm Gil / 07E
Warning 01 from NHC at 0900 GMT
Position 12.7N 115.1W
Location 785 miles SSW of the southern tip of Baja California
Movement 275° (W) at 13 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 160 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1004 mbar
Next warning from NHC at 1500 GMT

CENTRAL PACIFIC OCEAN
Tropical storm Iona / 01C
Warning 17 from CPHC at 0900 GMT
Position 12.3N 166.9W
Location 860 miles SW of Honolulu, Hawaii
Movement 280° (W) at 20 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 60 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1001 mbar
Next warning from CPHC at 1500 GMT

TROPICAL DISTURBANCE UPDATE 
EASTERN PACIFIC OCEAN
Update from NHC at 0900 GMT
System 99E is now 07E

System No Invest Assigned 
Position 13N 98W 
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is HIGH (70%)

CENTRAL PACIFIC OCEAN

Update from CPHC at 0900 GMT
System 92C
Position 11.5N 146.2W 
Minimum central pressure 1009 mbar
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (40%)
Likelihood of tropical cyclone formation within 7 days is MEDIUM (40%)

NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT 
System 92W is no longer suspect for tropical cyclone formation

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