8 May 2017 - bulletin 246

Updated at 0900 GMT
Latest warning for 18P
Disturbance updates


SOUTHWESTERN PACIFIC OCEAN
Tropical cyclone Donna / 18P
Warning 19 from JTWC at 0900 GMT
Position 17.5S 165.1E
Location 183 miles W of Port Vila, Vanuatu
Movement 155° (SSE) at 7 knots
Maximum sustained winds 115 knots gusting to 140 knots
Comparative strength HURRICANE
Winds of 34 knots or higher occur within 110 to 180 miles of the centre
Winds of 64 knots or higher occur within 30 to 35 miles of the centre
Threatened landmasses Vanuatu, New Caledonia
Maximum significant wave height 27 feet
Next warning from JTWC at 1500 GMT

Donna is moving south, and will slowly curve round onto a southeasterly course. This will take the storm past Vanuatu. The storm will then pass east of New Caledonia whilst weakening. Donna will become extra-tropical after 2-3 days.

Vanuatu warnings
A tropical cyclone warning is current for Sanma, Malampa and Shefa
A RED alert is in force for Sanma and Malampa
A YELLOW alert is in force for Shefa
A blue alert is in force for Tafea province

New Caledonian warnings
A cyclonic pre-alert is in force for the entire territory.
Cyclonic alert level 2 is in force for the provinces Nord, Ouvéa and Lifou, with alert level 1 in force elsewhere

TROPICAL DISTURBANCE UPDATE
EASTERN PACIFIC OCEAN
Update from NHC at 1800 GMT
System 90E
Position 8.0N 88.5W
Likelihood of tropical cyclone formation within 48 hours is LOW (20%)
Likelihood of tropical cyclone formation within 5 days is HIGH (70%)   

System No Invest Assigned (NIA-E)
Position 10N 104W
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 5 days is LOW (10%) 

SOUTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 91P
Position 16.3S 173.5W
Location 205 miles SW of Pago Pago
Likelihood of tropical cyclone formation within 24 hours is now MEDIUM

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