Issued at 1540 GMT
Latest warnings for 09L, 10L; 10E; 19W and 20W
First warning for 11L
Disturbance update
NORTHERN ATLANTIC OCEAN
Tropical storm Helene / 09L
Warning 17 from NHC at 1500 GMT
Position 35.1N 83.8W
Location 105 miles NNE of Atlanta, Georgia
Movement 350° (N) at 27 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 345 miles to the east of the centre
Threatened landmasses Georgia, Carolinas
Minimum central pressure 975 mbar
Next warning from NHC at 1800 GMT
Regional warnings
HURRICANE Isaac / 10L
Warning 07 from NHC at 1500 GMT
Position 37.4N 46.8W
Location 1080 miles W of the Azores
Movement 065° (ENE) at 15 knots
Maximum sustained winds 65 knots gusting to 80 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Winds of 64 knots or higher occur within 15 miles of the centre
Threatened landmasses Azores
Minimum central pressure 981 mbar
Next warning from NHC at 2100 GMT
Regional warnings
Tropical storm Joyce / 11L
Warning 01 from NHC at 1500 GMT
Position 18.1N 42.9W
Location 1325 miles E of northern Leeward Islands
Movement 310° (NW) at 11 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1006 mbar
Next warning from NHC at 2100 GMT
EASTERN PACIFIC OCEAN
Tropical storm John / 10E
Warning 19 from NHC at 1500 GMT
Position 18.1N 103.0W
Location 55 miles W of Lazaro Cardenas, Mexico
Movement 330° (NNW) at 2 knots
Maximum sustained winds 50 knots gusting to 65 knots
Winds of 34 knots or higher occur within 160 miles of the centre
Threatened landmasses Mexico
Minimum central pressure 993 mbar
Next warning from NHC at 1800 GMT
Mexican warnings
NORTHWESTERN PACIFIC OCEAN
Tropical storm Jebi / 19W
Warning 05 from JTWC at 1500 GMT
Position 18.4N 144.9E
Location 433 miles SSE of Iwo To
Movement 340° (NNW) at 3 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 80 to 90 miles to the east of the centre
Threatened landmasses NONE
Minimum central pressure 1001 mbar
Maximum significant wave height 16 feet
Next warning from JTWC at 2100 GMT
Tropical depression 20W
Philippines name Julian
Warning 02 from JTWC at 1500 GMT
Position 19.8N 125.9E
Location 420 miles NE of Manila, Philippines
Movement 215° (SSW) at 6 knots
Maximum sustained winds 30 knots gusting to 40 knots
Threatened landmasses Philippines
Minimum central pressure 1001 mbar
Maximum significant wave height 13 feet
Next warning from JTWC at 2100 GMT
Philippines warnings
TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1500 GMT
System 98L is now 11L
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