Weather systems like cyclonic circulations, low pressure areas and depressions are Monsoon drivers. Precisely, these systems enhance the Monsoon activity in the country from time to time. All of these systems originate as cyclonic circulations, both in the Arabian Sea and the Bay of Bengal. However, the frequency of weather systems are more in the Bay of Bengal than in its counterpart. At times, the cyclonic circulations appear over land and are known as ‘in situ’ Monsoon systems.
Dumbbell Effect
Occasionally, weather systems occur both in the Arabian Sea and the Bay of Bengal simultaneously. This gives rise to the dumbbell effect, when both the systems complement each other to enhance rainfall activity during the Monsoon season. They could even be partly over land and partly over the sea. Such a situation is likely to arise very soon as satellite images suggest the development of cyclonic circulations on either side of the mainland of India.
Monsoon rain in India
According to Skymet, Southwest Monsoon will remain active along the West Coast. Vigorous Monsoon activity will be witnessed over coastal Karnataka, Konkan & Goa during next 2 to 3 days. In fact, most parts of Peninsular India except extreme south Tamil Nadu will receive good Monsoon showers during next few days.
At the moment, the weather systems are organising and will gradually strengthen. The system over the Arabian Sea will remain mostly static but the one over the Bay of Bengal could shift inland after 48 hours. Thereby, the rain belt will shift to cover Odisha, Chhattisgarh, West Bengal and Madhya Pradesh. The circulation could gradually come very close to the West Coast and even merge with the one present in North Arabian Sea. We can then expect vigorous Monsoon activity over Gujarat, coastal parts of Maharashtra and west Madhya Pradesh.
The two weather systems will also be instrumental in the progress of Southwest Monsoon over more parts of West Bengal, Odisha, Chhattisgarh and even Bihar. However, rainfall in Northeast India will be only light to moderate for next few days. Blame it on the cyclonic circulation in the Bay of Bengal, which will draw away all the moisture from the region.
Click here, to see the next 7 days Monsoon Forecast
Image courtesy - www.interference.cc
