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Impressive rapid intensification of Tropical Cyclone “Ambali” in South Indian Ocean

impressive-rapid-intensification-of-tropical-cyclone-ambali-in-south-indian-ocean

An impressive rapid intensification of Tropical Cyclone "Ambali" is currently in progress in the South Indian Ocean. 

This is the second named storm of the 2019/20 Southwest Indian Ocean cyclone season, forming just days after Belna, the first named storm of the season. This is also the first major hurricane strength cyclone of the 2019/20 Southern Hemisphere season to date.

Ambali was seen quickly organizing and attaining formative rainbands around a coalescing center of circulation on December 3. Quick organization continued on December 4 and into December 5 when the storm was finally named Ambali.

Due to its location in a highly favorable environment, a phase of rapid intensification ensued, accompanied by the formation of an eye.

Tropical Cyclone 02S (left) and Tropical Cyclone "Ambali" (right) at 06:30 UTC on December 5, 2019

Tropical Cyclone "Ambali" at 19:30 UTC on December 5, 2019. Credit: Meteosat-8

At 18:00 UTC, Meteo France upgraded Ambali to an intense tropical cyclone, following a 75 km/h (47 mph) increase in storm's winds in just three hours.

The intensification could continue this night. However, from tomorrow and beyond, due to an approaching upper levels trough, a westerly shear constraint appears in the mid-levels, then in the upper levels quickly after, associated with mid-levels dry air intrusion.

A rather rapid weakening is suggested by the available intensity guidance, RSMC La Reunion said.

The intensity forecast for such a small system remains challenging and associated with a greater than usual uncertainty, it added.

JTWC's current forecast calls for Ambali to peak at 240 km/h (150 mph) over the next 12 hours (by 06:00 UTC on December 6).

Featured image: Tropical Cyclone "Ambali" at 19:30 UTC on December 5, 2019. Credit: Meteosat-8

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