In the past one week, the Kerala and Mahe region have received rainfall in ‘large excess,’ the IMD has said. According to an extended range forecast issued by the IMD for the coming two weeks, the region received 287.1 mm against 52.1 which is normal for the one-week period, a departure of 451%.

The southwest monsoon had set in over Kerala on May 24 against the normal date of June 1. In IMD parlance ‘large excess’ is rainfall in excess of 60% of the normal for a given period. “All districts in Kerala received large excess rainfall. Lakshadweep and Mahe also received large excess rainfall,” the IMD said.

Meanwhile, the deep depression over West Bengal and Bangladesh coasts is likely to weaken gradually into a depression during the next 12 hours and into a well-marked low pressure area during the subsequent 24 hours.