9 April 2017 - bulletin 176

Updated at 0920 GMT
Latest warning for 15S

Tropical cyclone Ernie / 15S
Warning 07 from JTWC at 0900 GMT
Position 17.4S 107.6E
Location 470 miles NW of Learmonth, Australia
Movement 240° (WSW) at 8 knots
Maximum sustained winds 85 knots gusting to 105 knots
Comparative strength HURRICANE
Winds of 34 knots or higher occur within 65 to 115 miles of the centre
Winds of 64 knots or higher occur within 15 to 30 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 28 feet
Next warning from JTWC at 2100 GMT

Ernie is weakening and will continue to move southwest, until it  dissipates within three days.

Tropical cyclone Cook / 16P
Warning 03 from JTWC at 0300 GMT
Position 17.5S 167.6E
Location 289 miles NNE of Noumea, New Caledonia
Movement 180° (S) at 4 knots
Maximum sustained winds 60 knots gusting to 75 knots
Comparative strength Tropical storm
Winds of 34 knots or higher occur within 60 to 130 miles of the centre
Threatened landmasses Vanuatu, New Caledonia
Maximum significant wave height 15 feet
Next warning from JTWC at 1500 GMT

Cook will move south, through Vanuatu, whilst intensifying to 85 knots. The storm will veer southwest, later southeast and pass close to New Caledonia's Grande Terre island, before becoming extra-tropical.

Regional warnings
The Vanuatu Met Office  advises that a RED ALERT is in force for Malampa and Shefa provinces, with a Blue Alert in force for Tafea province. Damaging winds, very rough seas, heavy swells, heavy rainfall and flooding can be expected. Please monitor local government output, as linked from the VMO site.

Meteo France advises that the entire territory of New Caledonia is on a pre-alert for a tropical cyclone. Please note: site in French.

Update from JTWC at 1800 GMT
System 96P
Position 7.5S 132.0E
Location 306 miles NNE of Darwin, Australia
Likelihood of tropical cyclone formation within 24 hours is now MEDIUM

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