Issued at 1020 GMT
Latest warning for 09L, 10E and 18W
First warning for 11L
Disturbance update
NORTHERN ATLANTIC OCEAN
HURRICANE Helene / 09L
Warning 12 from NHC at 0900 GMT
Position 24.2N 86.2W
Location 385 miles S of Apalachicola, Florida
Movement 015° (NNE) at 10 knots
Maximum sustained winds 80 knots gusting to 100 knots
Winds of 34 knots or higher occur within 345 miles of the centre
Winds of 64 knots or higher occur within 60 miles of the centre
Threatened landmasses Cuba, Florida, Georgia, Carolinas
Minimum central pressure 966 mbar
Next warning from NHC at 1200 GMT
Regional warnings
Tropical storm Isaac / 10L
Warning 02 from NHC at 0900 GMT
Position 37.1N 52.8W
Location 755 miles ENE of Bermuda
Movement 090° (E) at 10 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Threatened landmasses Mexico, Cuba, Florida, Georgia, Carolinas
Minimum central pressure 997 mbar
Next warning from NHC at 1500 GMT
EASTERN PACIFIC OCEAN
Tropical storm John / 10E
Warning 14 from NHC at 0900 GMT
Position 17.1N 102.5W
Location 65 miles SSW of Lazaro Cardenas, Mexico
Movement 285° (WNW) at 3 knots
Maximum sustained winds 60 knots gusting to 75 knots
Winds of 34 knots or higher occur within 140 miles of the centre
Threatened landmasses Mexico
Minimum central pressure 982 mbar
Next warning from NHC at 1500 GMT
NORTHWESTERN PACIFIC OCEAN
Tropical depression Cimaron / 18W
Warning 08 from JTWC at 0900 GMT
Position 28.0N 132.3E
Location 256 miles ENE of Kadena AB, Okinawa
Movement 180° (S) at 2 knots
Maximum sustained winds 25 knots gusting to 35 knots
Threatened landmasses NONE
Minimum central pressure 1002 mbar
Maximum significant wave height 12 feet
Next warning from JTWC at 1500 GMT
TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 0600 GMT
System 98L
Position 15.0N 36.7W
Minimum central pressure 1009 mbar
Likelihood of tropical cyclone formation within 48 hours is HIGH (70%)
Likelihood of tropical cyclone formation within 7 days is HIGH (80%)
System 99L is now 11L
NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 95W
Position 16.1N 148.3E
Location 157 miles ENE of Saipan
Likelihood of tropical cyclone formation within 24 hours is HIGH
System 96W is no longer suspect for tropical cyclone formation
System 97W
Position 24.5N 126.4E
Location 135 miles SSW of Kadena AB, Okinawa
Likelihood of tropical cyclone formation within 24 hours is LOW
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