13 August 2017 - bulletin 478

Updated at 2150 GMT
Latest warnings for 14W, 12E and 08L
Disturbance update


NORTHWESTERN PACIFIC OCEAN
TYPHOON Banyan / 14W
Warning 12 from JTWC at 2100 GMT
Position 22.2N 163.7E
Location 238 miles NW of Wake Island
Movement 345° (NNW) at 3 knots
Maximum sustained winds 90 knots gusting to 110 knots
Winds of 34 knots or higher occur within 35 to 50 miles of the centre
Winds of 64 knots or higher occur within 15 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 25 feet
Next warning from JTWC at 0300 GMT

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

EASTERN PACIFIC OCEAN
Tropical depression Jova / 12E
Warning 07 from NHC at 1500 GMT
Position 20.4N 118.5W
Location 580 miles WSW of the southern tip of Baja California
Movement 270° (W) at 12 knots
Maximum sustained winds 25 knots gusting to 35 knots
Threatened landmasses NONE
Minimum central pressure 1006 mbar
Next warning from NHC at 0300 GMT

Jova will move west. Due to adverse conditions, the system will weaken and is expected to dissipate later today.

NORTHERN ATLANTIC OCEAN
Tropical storm Gert / 08L
Warning 04 from NHC at 2100 GMT
Position 28.1N 71.7W
Location 505 miles WSW of Bermuda
Movement 335° (NNW) at 11 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 80 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1011 mbar
Next warning from NHC at 0300 GMT

Gert will move north, later northeast. The system will intensify to 55 knots before turning extra-tropical.

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1800 GMT
System 91L
Position 13.4N 21.1W
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 5 days is LOW (30%)
EASTERN PACIFIC OCEAN
Update from NHC at 1800 GMT
System No Invest Assigned
Position 13N 101W
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 5 days is MEDIUM (60%)

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