On and off pre-Monsoon rains have been lashing the southern state of Kerala for the last many days. During the month of May, it rained almost every day with varying intensity. The day used to begin on a sunny note, becoming cloudy during the late afternoon hours and finally raining during the late evening hours.
In general, the pre-Monsoon activities over Kerala is influenced by two weather systems. The first is the north-south trough extending across interior parts of Southern Peninsular India. The second is any weather system moving from east to west in the Indian Ocean in the form of a cyclonic circulation or low-pressure area mostly over the Comorin region.
Somewhat similar weather was prevailing in Kerala for the last three to four days.The last system that gave good rains over the state was a low-pressure area that brewed in Southwest Arabian Sea. This system is at present seen over the Gulf of Aden and Somali coast.
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While its journey westwards, it gave a couple of good rains over a few parts of Kerala beginning from May 13. May 14 experienced the major chunk of pre-Monsoon activities. However, as it started moving towards Yemen, rain activity over the state reduced drastically by May 15.
This is depicted in the maps given below:
Read Also: Southwest Monsoon 2018: All you need to know about the onset of Monsoon in India
In the last 24 hours, from 08:30 am on Tuesday, Thrissur received hefty rains to the tune of 61 mm, Periyakulam 31 mm, Kottayam 19.8 mm, Alappuzha 18.4 mm, Palayankottai 8 mm and Kochi 5.6 mm.
As per Skymet Weather, another cyclonic circulation was marked over the Comorin area, closer to Sri Lanka. At present, the system can be seen over the extreme southeastern parts of Arabian Sea. This is a favorable period for rain activities over Kerala for the next 24 hours as well. Hence, in the next 24 hours, parts of Kerala would witness some more light to moderate rains.
This system may intensify into another low-pressure area and would move westwards, leading to fluctuating weather and rainfall pattern of the state. Its westward movement away from the Indian coastline is going to change the wind pattern which would reduce the rainfall activity over the state, especially May 20 onwards.
While, its movement would remit a lean phase over Kerala in terms of rain intensity and spread, but the presence of the north-south trough would not let the weather become completely dry.
Image Credit: Pinterest
Any information taken from here should be credited to skymetweather.com
