On April 11, an upper air circulation developed over the Andaman Sea, where it moved north-eastwards and concentrated into a low pressure trough over the next day. The United StatesJoint Typhoon Warning Center started monitoring the system as a tropical disturbance on April 13, while it was some southwest of Yangon. JTWC reported that the disturbance was located within a favourable environment for further development and that convection had started to wrap into the elongated low level circulation centre. The system continued to develop and was classified as Depression BOB 01, by the India Meteorological Department early on April 15.
Preparations
Myanmar
The Union Minister for Social Welfare, Relief and Resettlement, the Vice President, ministers and disaster response team of Myanmar had an emergency meeting on the morning of April 16 to prepare rescue teams and arrange food and water stockpiles in disaster zones.
Shortly after the development was reported, the cyclone struck, causing severe waves and hence harm for people on the water.
Impact and aftermath
Myanmar
A total of 81 houses, worth about Ks3.7 million were damaged by the storm. Three houses were destroyed by fallen trees. Six lamp posts collapsed. Some houses had superficial damage as coconut palms collapsed on them. The Myanmar Meteorological Agency reported that accumulated rainfall for the 24 hours before April 17 at 9:30 a.m. local time totaled 3.7 inches for Bago. The town of Pyay received 5.4 inches. In the Rahkine Region, the city of Kyauckpyu received 4.6 inches of rainfall in a 24-hour period. In the Mon State, Thaton, a town in southern Myanmar received 4.3 inches of rainfall. Four people were reported killed in the Irrawady division of Myanmar.
Cyclone Maarutha, as a deep depression, left hundreds of tourists stranded in Havelock Island of Andaman and Nicobar Islands from heavy rainfall. In Andhra Pradesh and Odisha, heatwave conditions worsened as the cyclone drew all the moisture towards itself resulting in severe hot and dry weather.
Records
shares the Bay of Bengal coast with neighbouring countries Bangladesh and India. It has experienced strong tropical cyclones from May to November. Notable destructive cyclones that affected Myanmar include Cyclone Nargis in 2008, Cyclone Giri in 2010 and Cyclone Mala in 2006. According to the IMD, Maarutha was the first ever cyclone to maintain peak intensity until landfall on Myanmar in the month of April. Cyclone Bijli in April 2009 weakened into a depression prior to landfall in Bangladesh.