The second, designated Tropical Depression A2 by the Météo-France office (MFR) on Réunion, passed north of Madagascar on October 16 before weakening.

The basin was most active in February, when five named storms developed, including Tropical Depression Elizabetha which struck western Madagascar.

The agency estimated intensity through the Dvorak technique,[2] and warned on tropical cyclones in the region from the coast of Africa to 80° E, south of the equator.

[7] About a month after the previous storm dissipated, the JTWC classified another tropical depression on October 11 about 960 km (600 mi) east-southeast of Seychelles.

[6] While near peak intensity, the storm was affected by wind shear that displaced the circulation center along the north edge of the convection.

[11] The JTWC discontinued advisories on December 26, and Alexandra dissipated three days later well to the east-northeast of Mauritius, or about 1,600 km (1,000 mi) south of where it first formed.

[10] The MFR began monitoring a tropical depression on December 25 about 900 km (550 mi) east-northeast of the northern tip of Madagascar.

[12] Initially moving eastward without any strengthening, the depression turned back to the west toward Madagascar on December 28 due to a ridge.

[4] With warmer water temperatures but persistent wind shear,[6] the system strengthened into Tropical Storm Bryna on December 31.

The storm made landfall in the Sava Region of eastern Madagascar early on January 2 and subsequently crossed the northern portion of the country.

Although the JTWC discontinued advisories while Bryna was inland, the MFR continued tracking it, and the circulation emerged into the Mozambique Channel on January 3,[12] moving around a ridge.

The MFR estimated a secondary peak intensity of 65 km/h (40 mph) on January 7,[12] based on ship reports, although the structure was more subtropical in nature.

After crossing the southern portion of the country, Bryna moved over open waters, eventually turning back to the southwest before dissipating on January 10.

[6] After a period of inactivity lasting about a month, a tropical depression formed from the monsoon trough about 900 km (560 mi) northeast of Mauritius on February 8.

[14][15] Late on February 22, a tropical depression formed within a broad area of convection south of the Comoros in the Mozambique Channel.

With warm water temperatures, it gradually intensified while moving east-southeastward, and MFR upgraded it to Tropical Storm Elizabetha on February 24.

After reaching winds of 65 km/h (40 mph), the storm weakened back to tropical depression status and turned sharply southward, making landfall just west of Mahajanga in western Madagascar.

[17] While near peak intensity, the cyclone had developed well-defined outflow,[14] and around that time was interacting with Tropical Storm Gerda to its northwest.

[20] The JTWC assessed tropical storm intensity on February 27, noting the system was moving generally southeastward, although the MFR tracked the depression as executing a loop before turning to the southeast.

[4] After passing just south of North Keeling Island, Harriet turned more to the southwest, and strengthened into a Category 5 on the Australian tropical cyclone intensity scale on March 1.

[21] By that time, the MFR had begun issuing advisories, and later that day renamed Harriet as Heather after the cyclone crossed into the south-west Indian Ocean.

[22] On March 4, an approaching trough turned the cyclone to the south and southeast, producing stronger wind shear that induced weakening.

The cyclone reintensified slightly while accelerating to the southeast, and MFR estimated Heather re-attained its peak of 165 km/h (105 mph) on March 5.