Why it is in news?

•  As the Southwest monsoon recedes, attention is focussed on the potential of the Northeast monsoon to make up for the deficit this year in some parts of the peninsular States, particularly Tamil Nadu.
• The winter monsoon is likely to have a delayed onset, around the last week of October.

• The Northeast monsoon brings significant rainfall to coastal Andhra Pradesh, Rayalaseema, Tamil Nadu and Puducherry.
•  A well-marked low pressure area lying over central and adjoining south Bay of Bengal is likely to intensify into a depression.
• This is expected to be the last weather system of the season, as the Southwest monsoon withdraws.
•  Once it moves towards north Andhra Pradesh and south Odisha coast, the stage would be set for the arrival of the Northeast.
• International agencies that rely on various weather models have diverging results in their forecasts. Meteorologists and informed weather bloggers say the European Centre for Medium-Range Weather Forecasts (ECMWF), one of the reliable weather models, and South Asian Climate Outlook Forum indicate close to normal rainfall during the Northeast monsoon, especially for Tamil Nadu.
• Some districts, particularly those along the coast like Karaikal, Kanyakumari and Chennai, need a good Northeast monsoon to touch their normal annual rainfall.
•  There may be four weather events in the Bay of Bengal and Arabian sea from the second half of October to December.