25 March 2017 - bulletin 147

Updated at 2125 GMT
Latest warnings for 12S and 13P
Disturbance update


SOUTHERN INDIAN OCEAN
Tropical cyclone Caleb / 12S
Warning 05 from JTWC at 0900 GMT
Position 15.5S 100.0E
Location 898 miles WNW of Learmonth, Australia
Movement 215° (SW) at 5 knots
Maximum sustained winds 45 knots gusting to 55 knots
Comparative strength Tropical storm
Winds of 34 knots or higher occur within 50 to 75 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 14 feet
Next warning from JTWC at 2100 GMT

Caleb will move southwest, later west and is expected to strengthen to about 50 knots. After two days, the storm will weaken and is expected to dissipate after 4 days.

SOUTHWESTERN PACIFIC OCEAN
Tropical cyclone Debbie / 13S
Warning 02 from JTWC at 0900 GMT
Position 17.7S 152.1E
Location 364 miles E of Cairns, Australia
Movement 180° (S) at 2 knots
Maximum sustained winds 55 knots gusting to 70 knots
Comparative strength Tropical storm
Winds of 34 knots or higher occur within 85 to 140 miles to the south of the centre
Threatened landmasses Queensland, Australia
Maximum significant wave height 13 feet
Next warning from JTWC at 2100 GMT

Debbie will move south, later southwest and is expected to intensify rapidly. The storm will peak at 110 knots before making landfall in Queensland on Monday (GMT). 

Australian warnings
A tropical cyclone WARNING is in force from Ayr to St Lawrence, including Bowen, Mackay and Whitsunday Islands.
A tropical cyclone watch is in force from Cairns to Ayr, including Cardwell and Townsville.

TROPICAL DISTURBANCE UPDATE
SOUTHERN INDIAN OCEAN
Update from JTWC at 0130 GMT
System 92S
Position 15.7S 120.5E
Location 170 miles NW of Broome, Australia
Likelihood of tropical cyclone formation within 24 hours is LOW

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