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A deep depression that the Bay of Bengal conjured up as if on the sly washed ashore on Monday morning and parked itself 30 km north-west of Kolkata by the evening, surfing up the Bay waters in the process and setting of stormy conditions.
The preparatory low-pressure area had materialised yesterday but underwent quick transformation to become a deep depression, which is next only in strength and intensity to a tropical cyclone.
Quick transformation The proximity to land acted against any prospect of further intensification as a cyclone, but impact-wise, deep depression would have delivered almost similar experience in terms of rough seas, high winds, and heavy rainfall.
The India Met Department (IMD) said in an evening update that along with Assam, Meghalaya and the plains of Bengal, Rayalaseema far away to south-west too received heavy rain until Monday morning. Thunderstorms rolled out across Vidarbha, Madhya Pradesh, Marathwada, Telangana, Coastal Andhra Pradesh, plains of Bengal, Assam and Meghalaya until post-noon the same day.
The deep depression has thrown down a trough (an elongated area of lower pressure) diagonally across to south-west to link with a circulation over North-West Madhya Pradesh and onward to another over East-Central Arabian Sea.
Violent weather This region would also experience violent weather over the next few days, strengthening the circulation over North-West Madhya Pradesh and pushing it towards Konkan-Mumbai-South Gujarat, according to early forecasts.
The tri-junction is a favourite location for storms to prosper; in the instant case, it would not grow beyond a depression. But some stormy weather is likely to develop over this region from the weekend and last for a couple of days.
The IMD projections suggest that this weather system would later move out into the sea and away from the coast by which time the Bay of Bengal, on the other side, would have geared up for fresh activity.
The US Climate Prediction points to a fresh bout of showers over the South Peninsula (Tamil Nadu, Puducherry, Coastal Andhra Pradesh, Rayalaseema, Telangana, Karnataka and Kerala) during October 15 to 20.
This could likely indicate the arrival of the North-East monsoon, which, according to three global ensemble forecasts tracked by BusinessLine , would be accompanied by a fresh weather system (low-pressure area or a more advanced storm).
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