File photo of rains in Kochi

(R K Sreejith / BCCL, Kochi)

On Thursday, the India Meteorological Department (IMD) reiterated that Southwest Monsoon onset over Kerala is possible by May 25.

“Conditions are favourable for further advance of Southwest Monsoon into some more parts of south and central Bay of Bengal and some parts of south Arabian Sea during next two days. Conditions will continue to be favourable for further progress leading to the onset of Southwest Monsoon over Kerala towards the end of the week,” IMD’s Extended Range Forecast for the week starting Thursday said.

Last week, the IMD announced the onset date of SW Monsoon over Kerala on May 27 with a model error margin of plus/minus four days.

Much before its regular date of May 22, the monsoon has reached and crossed Andaman & Nicobar Islands on May 16.

Meanwhile, due to strong cross-equatorial flow from the Bay of Bengal to the Andaman Sea in lower tropospheric levels, fairly widespread to widespread rainfall with isolated heavy rains and thunderstorm, lightning, gusty winds are very likely over Andaman and Nicobar Islands during the week starting from Thursday till next Wednesday.

Under the influence of a cyclonic circulation over north interior Tamil Nadu and a north-south trough running from central Madhya Pradesh to interior Tamil Nadu, fairly widespread to widespread light to moderate rainfall with isolated thunderstorm, lightning and gusty winds are very likely over Kerala-Mahe and Karnataka during most days till Thursday. Isolated heavy rainfall is very likely over coastal and south interior Karnataka on Friday, heavy to very heavy rainfall at isolated places likely over Kerala and Mahe on Friday, and isolated heavy rainfall for the rest of the week. Scattered to fairly widespread light to moderate rainfall with isolated thunderstorms and lightning are likely over Tamil Nadu and Rayalaseema and isolated rainfall/ thunderstorms over the rest of peninsular India during the week.

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The above article has been published from a wire agency with minimal modifications to the headline and text.

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