What was the most powerful storm in the 1996-97 South-West Indian Ocean cyclone season?
1996–97 South-West Indian Ocean cyclone season
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In the middle of October, the intertropical convergence zone (ITCZ) was active over the northeast portion of the basin and into the adjacent Australian region, spawning a low pressure area on October15 northwest of the Cocos Islands. With a large ridge to the south, the system tracked southwestward,[1] crossing into the south-west Indian Ocean as a tropical depression on October17.[6] Also on that day, the JTWC began issuing warnings on the system as Tropical Cyclone 4S.[3] On October18, the depression intensified into Tropical Storm Antoinette after developing a well-defined central dense overcast, and began turning more to the west-southwest.[1] That day, Antoinette strengthened to a peak intensity of just below tropical cyclone status, or with 10–minute winds just below 120km/h (75mph).[6] Around that time, the storm developed an eye feature, but that quickly dissipated. Antoinette began weakening steadily on October20 due to increasing wind shear, and by that time it was moving quickly westward. After the circulation became largely devoid of deep convection, the storm weakened into a tropical depression on October21. The next day, Antoinette passed about 200km (120mi) north of the northern tip of Madagascar, and dissipated on October24 in the Mozambique Channel.[1]