Monsoon has covered the entire country, a day later than normal, announces IMD, Pg1

Key Highlights:

• The southwest monsoon covered the entire country on Thursday, July 9.
• This nationwide coverage was achieved one day later than its normal date.
• The India Meteorological Department (IMD) announced the monsoon's advance into the remaining parts of the north Arabian Sea, Rajasthan, Haryana, and Punjab.
• India's current monsoon rainfall deficit stands at 15%, a significant improvement from 38% on June 30.

Detailed Insights:

• The monsoon reached Kerala on June 5, taking 35 days for nationwide coverage.
• While slower than recent years, the July 9 date for full coverage is not historically unusual.
• Historically, nationwide monsoon coverage dates have ranged from June 16 (2013) to August 15 (2002).
• The IMD has forecast below-normal rainfall for July, defined as less than 94% of the Long Period Average.
• July is crucial for Indian agriculture as it receives the highest rainfall among the monsoon months.
• There is no simple correlation between the date of nationwide monsoon coverage and the total June-September rainfall.
• El Niño events can weaken monsoon circulation and impact rainfall distribution, even after the monsoon has formally covered the entire country.

Key Concepts Involved:

• Southwest Monsoon: A seasonal wind system that brings heavy rainfall to the Indian subcontinent from June to September.
• India Meteorological Department (IMD): The primary agency responsible for meteorological observations, weather forecasting, and seismology in India.
• Long Period Average (LPA): A benchmark figure representing the average rainfall over a specific period, typically 50 years, used to assess monsoon performance.
• El Niño: A climate pattern characterized by the unusual warming of surface waters in the eastern tropical Pacific Ocean, often associated with weaker monsoons in India.