12 August 2017 - bulletin 474

Updated at 1500 GMT
Latest warnings for 14W and 12E
Disturbance update


NORTHWESTERN PACIFIC OCEAN
Tropical storm Banyan / 14W
Warning 07 from JTWC at 1500 GMT
Position 20.0N 164.7E
Location 115 miles WNW of Wake Island
Movement 330° (NNW) at 7 knots
Maximum sustained winds 60 knots gusting to 75 knots
Winds of 34 knots or higher occur within 30 to 90 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 19 feet
Next warning from JTWC at 2100 GMT

Banyan will move northnorthwest, later veering northnortheast. The system will intensify to 100 knots, before becoming extratropical.

EASTERN PACIFIC OCEAN
Tropical storm Jova / 12E
Warning 03 from NHC at 1500 GMT
Position 20.1N 111.2W
Location 90 miles N of Socorro Island
Movement 295° (WNW) at 11 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 45 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1003 mbar
Next warning from NHC at 2100 GMT

Jova will move westnorthwest, later west. Due to adverse conditions, the storm will weaken after today, and is expected to dissipate after a day or so.

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1200 GMT
System 99L
Position 23.0N 68.7W
Location 150 miles NE of the Turks & Caicos Islands
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (60%)
Likelihood of tropical cyclone formation within 5 days is HIGH (70%)

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