The well marked low pressure area over north Sumatra coast and adjoining south Andaman Sea now lies over southeast Bay of Bengal with associated upper air cyclonic circulation extending upto 5.8 km above mean sea level.
It is likely to become a depression during next 24 hours and deep depression during the subsequent 48 hours. It is very likely to move towards north TamilNaduSouth Andhra Pradesh coasts during next 3 to 4 days, the Meteorological Centre here said today.
Coastal as well as interior regions of the state are expected to experience rainfall during the period, he said.
Preliminary reports indicate that around 18 districts of the state, mostly in southern region, are likely to face heavy rainfall due to the system, the MeT office said.
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In view of the emerging weather conditions, the state government is keeping a close watch on the situation and would alert the Collectors of the districts which are likely to experience rainfall, said a senior official.
Fresh rainfall is likely to compound the miseries of farmers who are already reeling under crop loss due to unseasonal rain last month. They also faced crop loss due to pest attack and drought conditions.