On Thursday, the monsoon moved into more parts of the Maldives-Comorin area, the southwest and eastcentral Bay of Bengal, the majority of the southeast Bay of Bengal, and some parts of the westcentral Bay of Bengal.

The India Meteorological Department (IMD) has predicted that conditions will become favourable for monsoon onset in Kerala on May 31.

According to IMD, the normal date for monsoon onset in Kerala is June 1, but Yaas aided in pulling the monsoon flow over the Arabian Sea. On May 31, the IMD will release its second-stage monsoon forecast, which will include details on the likely zonal distribution of rain.

This morning, Cyclone Yaas weakened into a well-defined low pressure area over Bihar and east Uttar Pradesh. On Thursday night, the depression (remnant of Yaas) over central Jharkhand had moved northwards and lay around 100 kilometres north of Ranchi (Jharkhand) and 150 kilometres south of Patna.

Isolated heavy to very heavy rainfall with extremely heavy falls is likely over Bihar on Friday; east Uttar Pradesh on Thursday and Friday; Bihar on Friday; and heavy rainfall is likely over Odisha and Chhattisgarh during the period under its influence.