May 26 :With the strengthening of westerly winds and development of convection over Bay of Bengal, southwest monsoon has further advanced into some more parts of south & central Bay of Bengal and parts of northeast Bay of Bengal.
India Meteorological Department’s analysis and interpretation of Numerical weather prediction models indicate strengthening & deepening of cross equatorial wind flow over south Arabian Sea during next 3-4 days. Consequently fairly widespread rainfall is likely over Lakshadweep, Kerala and Coastal Karnataka. Thus conditions are becoming favourable for onset of monsoon over Kerala during next 3-4 days.
The Northern Limit of Monsoon as on today, the 26th May 2008, passes through Lat 5.0ºN Long 83.0ºE, Lat 10.0ºN Long 84.0ºE, Lat 15.0ºN Long 87.0ºE and Lat 20.0ºN Long 93.0ºE.
The current scenario suggests an off-shore trough extending from Karnataka to Kerala coast with an embedded low pressure area over southeast & adjoining east-central Arabian Sea. An east-west shear zone is also establishing over south peninsula along nearly 10ºN latitude.