High probability of cyclogenesis over Bay of Bengal by May 3
There is a high
probability of a cyclogenesis over Bay of Bengal by May 3. Cyclogenesis is the
development or strengthening of cyclonic circulation in the atmosphere
The tropical weather outlook
released by the Regional Specialised Meteorological Centre (RSMC) for Tropical
Cyclones for North Indian Ocean on April 28 said that the probability of
cyclogenesis over Bay of Bengal is low for the 48-72 hours starting from April
28, moderate for 72-96 hours, and high for 96-120 hours.
It said that the Madden-JulianOscillation (MJO) index lies currently in phase-3 with amplitude more than 1.
It will continue in same phase till April 30. It will move to phase-4 with
amplitude becoming less than 1 from May 1 onwards till May 4. MJO phase will
support enhancement of convective activity over Bay of Bengal (BoB).
The tropical weather outlook
said that many of the numerical models, including IMD Global Forecast System, suggest
low-pressure area over South Andaman Sea and adjoining southeast BoB around April
30.
Most of the models suggest
further Intensification into a depression during subsequent 48 hours and further
intensification into a cyclonic storm thereafter in subsequent 24 hours. Most
of the models suggest initial North-North-Westward movement and then North-North-Eastward
movement of the system along Andaman and Nicobar Islands towards Myanmar coast
during April 30 to May 3.
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