 The MFR began monitoring a tropical depression on December 25 about 900 km ( 550 mi ) east @-@ northeast of the northern tip of Madagascar . Initially moving eastward without any strengthening , the depression turned back to the west toward Madagascar on December 28 due to a ridge . Two days later , the JTWC also began tracking the system , designating it as Tropical Cyclone 10S . With warmer water temperatures but persistent wind shear , the system strengthened into Tropical Storm Bryna on December 31 . At 1800 UTC that day , the MFR estimated peak 10 ‑ minute winds of 70 km / h ( 45 mph ) . On January 1 , the JTWC estimated peak 1 ‑ minute winds of 85 km / h ( 50 mph ) , before assessing that Bryna began weakening . 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 , moving around a ridge . Bryna curved to the south , brushing Melaky before moving farther offshore . The MFR estimated a secondary peak intensity of 65 km / h ( 40 mph ) on January 7 , based on ship reports , although the structure was more subtropical in nature . Around that time , BrBrynayna was turning to the southeast , and the next day made a final landfall in southwestern Madagascar . After crossing the southern portion of the country , Bryna moved over open waters , eventually turning back to the southwest before dissipating on January 10 . 
