In contrast to the northern Indian Ocean and the Arabian Sea... three active tropical cases over the waters of the southern Indian Ocean, one of which is a category 4 cyclone

Arab Weather - The regions of the southern hemisphere, including the southern parts of the Indian Ocean, have entered the summer season since 12/21/2024 until today, as temperatures have risen and the surface temperature of the waters of the southern Indian Ocean has also risen, and it has become suitable for the generation of tropical conditions, some of which rise to the level of a hurricane.

In contrast to the areas in the northern Indian Ocean and the Arabian Sea, satellite images at the Arab Weather Center monitor three tropical cases at the same time, rotating close to each other in the area in the southern Indian Ocean, one of which reaches the level of a hurricane with advanced categories.

System 1: Category 4 Hurricane Vince

The most severe tropical cyclone is a Category 4 cyclone Vince in the southeastern Indian Ocean, moving west over the ocean in the coming days with expectations of its classification being reduced to Category 1 over the next two days, and there are no expected or clear effects until the end of this week on any country or island in the western Indian Ocean.

System 2: Tropical Storm Taliah is expected to develop into a Category 1 hurricane.

The second tropical system is Tropical Storm Taliah, which is expected to develop into a Category 1 hurricane centered in the central part of the southern Indian Ocean, and will move in the coming days at a southeasterly angle towards waters with lower temperatures than where it is now, as the air pressure in the center of the hurricane fills as it turns into a tropical depression over the ocean waters away from the countries.

System 3: Tropical storm to affect northern Australia in the coming days

The third tropical system is Tropical Storm 96S, which is expected to affect northwestern Australia in the coming days, accompanied by very heavy rains and strong winds that will cause noticeable waves disturbance, with flooding in some areas.

What is the scientific reason for tropical cyclones forming in the southern Indian Ocean at this time of year?

The scientific reason for the formation of hurricanes in the southern Indian Ocean region is due to the entry of these regions in the summer, where the temperature of the waters of the southern Indian Ocean rose to about 28 degrees Celsius, which is a very favorable temperature for the formation of huge cumulonimbus clouds that begin to develop and grow and absorb the latent energy from the surface heat of the warm waters, which makes them gradually develop into a tropical weather system with a decrease in atmospheric pressure in its center and the clouds begin to rotate around the center of low atmospheric pressure announcing the growth of a hurricane when the wind speed reaches more than 120 km/h, and the hurricane classification increases according to the average wind speed according to the Saffir-Simpson scale for measuring the intensity of hurricanes.

In stark contrast, the region north of the Indian Ocean and the Arabian Sea is dominated by a solid tropical high in the upper atmosphere, with even no cloud cover.

It is noteworthy that the hurricane season of the North Indian Ocean and the Arabian Sea witnesses two periods of activity; the first is between May and June, and the other period of activity begins from September to November.

God knows best.