As per the latest meteorological indications, the southwesterly winds could strengthen further gradually from 01st June, resulting in a likely enhancement in rainfall activity over Kerala. Hence the monsoon onset over Kerala is likely to take place by 03rd June 2021.

• The Western Disturbance now seen as a trough in mid & upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly along longitude 70°E to the north of latitude 28°N.
• The cyclonic circulation over Punjab & neighbourhood extending up to 1.5 km above mean sea level persists.
• The trough from the above cyclonic circulation over Punjab & neighbourhood now runs up to northwest Rajasthan extending up to 0.9 km above mean sea level.
• The Cyclonic Circulation over East Uttar Pradesh & neighbourhood now lies over southern parts of East Uttar Pradesh & neighbourhood extending up to 4.5 km above mean sea level.
• The trough from the above cyclonic circulation over southern parts of East Uttar Pradesh & neighbourhood now runs up to Vidarbha extending up to 1.5 km above mean sea level across Chhattisgarh & East Madhya Pradesh.
• The cyclonic circulation over the East-central Arabian Sea off the Karnataka coast at 3.1 km above mean sea level persists.
• A cyclonic circulation lies over Tamil Nadu & neighbourhood between 5.8 & 7.6 km above mean sea level.
• The cyclonic circulation over central parts of the South Arabian Sea & adjoining parts of the Central Arabian Sea now lies over the Southwest Arabian Sea at 5.8 km above mean sea level.
• The cyclonic circulation over north Pakistan & neighbourhood between 2.1 km & 3.1 km above mean sea level has become less marked.
• The cyclonic circulation over the North Andaman Sea & neighbourhood extending up to 1.5 km above mean sea level has become less marked.
• The cyclonic circulation over southeast Madhya Pradesh & neighbourhood extending up to 0.9 km above mean sea level has become less marked.
• The trough from the cyclonic circulation over southeast Madhya Pradesh & neighbourhood to south Tamil Nadu across Vidarbha, Telangana and Rayalaseema at 0.9 km above mean sea level has become less marked.