1 August 2025 - bulletin 478

Issued at 1545 GMT
Latest warnings for 01C, 07E and 12W
Disturbance update

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NORTHWESTERN PACIFIC OCEAN
Tropical storm Krosa / 12W
Warning 36 from JTWC at 1500 GMT
Position 34.1N 141.3E
Location 99 miles SE of Yokosuka, Japan
Movement 360° (N) at 6 knots
Maximum sustained winds 60 knots gusting to 75 knots
Winds of 34 knots or higher occur within 50 to 100 miles of the centre
Threatened landmasses Japan
Maximum significant wave height 25 feet
Minimum central pressure 977 mbar
Next warning from JTWC at 2100 GMT

EASTERN PACIFIC OCEAN
Tropical storm Gil / 07E
Warning 06 from NHC at 1500 GMT
Position 15.3N 121.5W
Location 920 miles WSW of the southern tip of Baja California
Movement 290° (WNW) at 14 knots
Maximum sustained winds 55 knots gusting to 70 knots
Winds of 34 knots or higher occur within 140 miles of the centre
Threatened landmasses NONE
Minimum central pressure 996 mbar
Next warning from NHC at 2100 GMT

CENTRAL PACIFIC OCEAN
Tropical storm Iona / 01C
Warning 22 from CPHC at 1500 GMT
Position 14.6N 176.3W
Location 1295 miles WSW of Honolulu, Hawaii
Movement 285° (WNW) at 19 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 60 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1005 mbar
Next warning from CPHC at 2100 GMT

TROPICAL DISTURBANCE UPDATE 
EASTERN PACIFIC OCEAN
Update from NHC at 1200 GMT
System No Invest Assigned 
Position 13N 102W 
Likelihood of tropical cyclone formation within 48 hours is LOW (30%)
Likelihood of tropical cyclone formation within 7 days is HIGH (80%)

System No Invest Assigned 
Position 13N 102W 
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is LOW (20%)

CENTRAL PACIFIC OCEAN
Update from CPHC at 1200 GMT
System 92C is no longer suspect for tropical cyclone formation

NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 1230 GMT 
System 93W 
Position 26.3N 135.1E 
Location 395 miles E of Kadena AB, Okinawa
Likelihood of tropical cyclone formation within 24 hours is now MEDIUM