HEAVY RAINFALL IN KERALA

Aug. 4, 2022

After experiencing poor rainfall in June and July, almost three-fourth of Kerala is experiencing heavy showers in August, with several areas on the brink of flooding.

Why is Kerala witnessing heavy rains?

Kerala is presently under the influence of at least three rainfall triggering weather conditions.
There are strong Westerly winds flowing-in from the Arabian Sea, and bringing moisture over Kerala.
Another major cause for an increase in rainfall is the presence of an east-west shear zone located 10 degrees north over the southern peninsula.
This vertical zone — that can prevail either in the lower, middle or upper atmospheric levels — allows active winds of high speeds to interact. This zone also allows monsoon winds to remain active, thus causing intense rainfall over the area under its influence.
The IMD further stated that the presence of a north-south trough running between Chhattisgarh and Comorin areas, which is located closer to south Kerala is causing widespread rainfall.

Source : Indian Express