[5] The JTWC, released a TCFA on the system, stating that it could intensify further, because of very warm waters and low to moderate wind shear, designating it Invest 96B.

[7][8] Mandous continued tracking westward, and later, attaining wind speeds of 65 mph (105 km/h; 56 kn), strengthened into a Severe Cyclonic Storm.

Although forecasted to quickly degenerate into a remnant low, ARB 03 intensified into a Deep Depression, according to the Indian Meteorological Department,[13] and the JTWC dubbed it as Cyclone 07A.

After reaching peak intensity, the Low-Level Circulation detached from the associated convection, and wind shear increased, starting a weakening trend.

In Chennai, approximately 200 trees were uprooted due to strong winds and heavy rainfall, causing disruptions to transportation and daily activities.